Carel FLSTDMAHUE User manual

Integrated Control Solutions & Energy Savings
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!
FLSTDMAHUE
User manual
Application for managing air handling units with
integrated DEC - IEC

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Warning
CAREL bases the development of its products on decades of experience
in HVAC, on the continuous investments in technological innovations
to products, procedures and strict quality processes with in-circuit and
functional testing on 100% of its products, and on the most innovative
production technology available on the market. CAREL and its subYESdiaries
nonetheless cannot guarantee that all the aspects of the product and the
software included with the product respond to the requirements of the
nal application, despite the product being developed according to start-
of-the-art techniques.
The customer (manufacturer, developer or installer of the nal equipment)
accepts all liability and risk relating to the conguration of the product
in order to reach the expected results in relation to the specic nal
installation and/or equipment.
CAREL may, based on specic agreements, act as a consultant for the
poYEStive commisYESoning of the nal unit/application, however in no
case does it accept liability for the correct operation of the nal equipment/
system.
The CAREL product is a state-of-the-art product, whose operation is
specied in the technical documentation supplied with the product or can
be downloaded, even prior to purchase, from the webYESte www.CAREL.
com.
Each CAREL product, in relation to its advanced level of technology,
requires setup / conguration / programming / commisYESoning to be
able to operate in the best possible way for the specic application. The
failure to complete such operations, which are required/indicated in the
user manual, may cause the nal product to malfunction; CAREL accepts
no liability in such cases.
Only qualied personnel may install or carry out technical service on the
product.
The customer must only use the product in the manner described in the
documentation relating to the product.
In addition to observing any further warnings described in this manual, the
following warnings must be heeded for all CAREL products:
• Prevent the electronic circuits from getting wet. Rain, humidity and
all types of liquids or condensate contain corroYESve minerals that
may damage the electronic circuits. In any case, the product should
be used or stored in environments that comply with the temperature
and humidity limits specied in the manual.
• Do not install the device in particularly hot environments. Too high
temperatures may reduce the life of electronic devices, damage
them and deform or melt the plastic parts. In any case, the product
should be used or stored in environments that comply with the
temperature and humidity limits specied in the manual.
• Do not attempt to open the device in any way other than described
in the manual.
• Do not drop, hit or shake the device, as the internal circuits and
mechanisms may be irreparably damaged.
• Do not use corroYESve chemicals, solvents or aggressive detergents
to clean the device.
• Do not use the product for applications other than those specied in
the technical manual.
All of the above suggestions likewise apply to the controllers, serial boards,
programming keys or any other accessory in the CAREL product portfolio.
CAREL adopts a policy of continual development. Consequently, CAREL
reserves the right to make changes and improvements to any product
described in this document without prior warning.
The technical specications shown in the manual may be changed without
prior warning.
The liability of CAREL in relation to its products is specied in the CAREL
general contract conditions, available on the webYESte www.CAREL.
com and/or by specic agreements with customers; specically, to the
extent where allowed by applicable legislation, in no case will CAREL,
its employees or subYESdiaries be liable for any lost earnings or sales,
losses of data and information, costs of replacement goods or services,
damage to things or people, downtime or any direct, indirect, incidental,
actual, punitive, exemplary, special or consequential damage of any kind
whatsoever, whether contractual, extra-contractual or due to negligence,
or any other liabilities deriving from the installation, use or imposYESbility
to use the product, even if CAREL or its subYESdiaries are warned of the
posYESbility of such damage.
The product must be installed with the earthconnected, using the
special yellow-green terminal on the terminal block. Do not use the
neutral for the earth connection.
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!
WARNING: separate as much as possible the probe and
digital input signal cables from the cables carrying inductive
loads and power cables to avoid possible electromagnetic
disturbance. Never run power cables (including the electrical
panel wiring) and signal cables in the same conduits
Warranty on the
materials:
2 years (from the date of production, excluding
consumables).
Approval: the quality and safety of CAREL INDUSTRIES Hqs
products are guaranteed by the ISO 9001 certied
design and production system.
DISPOSAL
INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE
ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
In reference to European Union directive 2002/96/EC issued on 27 January
2003 and the related national legislation, please note that:
• WEEE cannot be disposed of as municipal waste and such waste must be
collected and disposed of separately;
• the public or private waste collection systems dened by local legislation
must be used. In addition, the equipment can be returned to the
distributor at the end of its working life when buying new equipment;
• the equipment may contain hazardous substances: the improper use or
• incorrect disposal of such may have negative eects on human health
and on the environment;
• the symbol (crossed-out wheeled bin) shown on the product or on the
• packaging and on the instruction sheet indicates that the equipment
has been introduced onto the market after 13 August 2005 and that it
must be disposed of separately;
• in the event of illegal disposal of electrical and electronic waste, the
penalties are specied by local waste disposal legislation.

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Content
1. INTRODUCTION 7
1.1 Main features ..................................................................................................................................7
1.2 Accessories available for FLSTDMAHUE.........................................................................7
2. COMMUNICATION PORTS 10
2.1 Serial ports.....................................................................................................................................10
3. HARDWARE INSTALLATION 11
3.1 DIN rail assembly and dimensions .................................................................................11
3.2 Description of the terminals on the pCO Large.....................................................11
3.3 Installation .....................................................................................................................................12
3.4 Connection of the analogue inputs..............................................................................12
3.5 Connecting the digital inputs...........................................................................................13
3.6 Connecting the analogue outputs ................................................................................14
3.7 Connecting the digital outputs........................................................................................14
3.8 Connecting the fan inverter via analogue input...................................................14
3.9 Connecting serial devices with Modbus/Belimo® protocol...........................14
3.10 Remote terminal with pLAN network..........................................................................14
3.11 Connection diagrams.............................................................................................................15
3.12 DEC-IEC functional diagram...............................................................................................18
4. USER INTERFACE 19
4.1 Graphic terminal........................................................................................................................19
4.2 Display e tastiera........................................................................................................................19
4.3 Programming mode................................................................................................................19
5. MENU DESCRIPTION 21
5.1 A. On/O Unit ................................................................................................................21
5.2 B. Setpoint ........................................................................................................................21
5.3 C. Clock/Scheduler.....................................................................................................22
5.4 D. Input/Output ........................................................................................................22
5.5 E. Data logger..................................................................................................................23
5.6 F. Board switch................................................................................................................23
5.7 G. Service..........................................................................................................................23
5.8 H. Manufacturer ........................................................................................................24
6. SOFTWARE INSTALATION 25
6.1 pCO Manager ..............................................................................................................................25
6.2 SmartKey ........................................................................................................................................25
6.3 USB pen drive .............................................................................................................................26
6.4 Setting the terminal address..............................................................................................27
7. SOFTWARE CONFIGURATION 28
7.1 Select devices (Ha) ...................................................................................................................28
7.2 Congure devices (Ha)...........................................................................................................28
7.3 Assign inputs/outputs (Hb) ................................................................................................28
7.4 Device control parameters (Hc).......................................................................................30
7.5 pCOe expansion card connection..................................................................................30
7.6 Serial probe connection .......................................................................................................30
7.7 VFD inverter connection.......................................................................................................31
7.8 Belimo actuator connection ..............................................................................................31
7.9 Probes from supervisor..........................................................................................................32

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8. COMMISSIONING 33
8.1 Loading the conguration ..................................................................................................33
8.2 Commissioning ..........................................................................................................................33
8.3 Probe calibration .......................................................................................................................33
8.4 Setting the control parameters........................................................................................33
8.5 Setting the hour counters ...................................................................................................33
8.6 Enthalpy management..........................................................................................................33
8.7 I/O test..............................................................................................................................................33
9. FUNCTIONS 34
9.1 On/O ..............................................................................................................................................34
9.2 Set point..........................................................................................................................................35
9.3 Temperature control ...............................................................................................................35
9.4 Humidity control .......................................................................................................................36
9.5 Temperature / humidity control / no priority..........................................................38
9.6 Set point compensation.......................................................................................................39
9.7 Summer/winter changeover .............................................................................................40
9.8 Freecooling and freeheating..............................................................................................40
9.9 Heat recovery...............................................................................................................................42
9.10 Cascade control..........................................................................................................................43
9.11 Supply limits.................................................................................................................................44
9.12 Direct evaporative cooling - DEC....................................................................................45
9.13 Indirect evaporative cooling - IEC...................................................................................46
9.14 IEC limitation from algorithm/probe ............................................................................47
9.15 IEC limitation from mixing damper/bypass damper opening......................48
9.16 Coils water temperature limits..........................................................................................48
9.17 Pump management................................................................................................................49
9.18 Cooling devices..........................................................................................................................50
9.19 Heating devices..........................................................................................................................50
9.20 Fan management......................................................................................................................50
9.21 Air quality.......................................................................................................................................52
9.22 Purging ............................................................................................................................................53
9.23 Frost protection..........................................................................................................................53
9.24 Auxiliary control.........................................................................................................................54
9.25 Fireman override........................................................................................................................54
10.PARAMETERS TABLE 55
9.1 BMS variables...............................................................................................................................76
11.ALARMS 87
11.1 Types of alarms ...........................................................................................................................87
11.2 Alarm log........................................................................................................................................87
11.3 Alarm table....................................................................................................................................87
12.PCO MANAGER 90
12.1 Installation ....................................................................................................................................90
12.2 PC - pCO controller connection.......................................................................................90
12.3 Commissioning ..........................................................................................................................90

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1. INTRODUCTION
FLSTDMAHUE is an application program developed by CAREL for the
management of air handling units (AHU). It runs on the pCO5+ range of
programmable controllers (pCO5+ small, medium, large), selected according
to the complexity of the unit, and the pGD1/pLDPRO terminal. Its main feature
is its adaptability to many types of air handling unit, with dierent types of
probes and actuators, on/o type or modulating. Moreover, the possibility to
connect up to two pCOe serial options via RS485 card allows additional probes
and outputs to be added, ensuring maximum exibility. Alternatively, the MP-
Bus® card can be used to connect up to 8 Belimo®, actuators each with its probe
or digital input; this eliminates a lot of the wiring needed during installation.
CAREL temperature, humidity and combined serial probes can be connected,
for both rooms and ducts, as well as active dierential pressure probes, ow
switches and pressure switches to signal alarms following faults on fans or
pumps. The supply and return air fans can be controlled by inverter based
on pressure, ow-rate, speed or air quality requirements. The control software
can manage temperature or humidity as the priority, control an adiabatic
or isothermal humidier, freecooling/freeheating based on enthalpy and
humidity recovery using a heat wheel. The possibility to integrate adiabatic
humidiers into temperature control (with direct evaporative cooling - DEC,
and indirect evaporative cooling - IEC) means the desired conditions can be
reached extremely eectively and eciently. The commissioning procedure is
based on the documented design of the air handling unit being controlled:
the inputs and outputs can be assigned dynamically, meaning there is no xed
position for the various types of probes/actuators connected, with the software
proposing the rst position available for the type of input/output (e.g. a certain
input can accept a passive NTC probe or active probe with 0 to 1 V or 4 to
20 mA output). The identication of the type of AHU being controlled is not
based on the choice between a certain number of pre-congured units; rather
the selection of the devices installed on the AHU (e.g. preheating / cooling
/ reheating coils, fans, pumps, inverter, heaters, dampers, humidiers, heat
recovery unit) and then setting their parameters. This simplies conguration,
as the user only sees the parameters relating to the components used. Changes
can be made subsequently to the conguration without needing to start again
from scratch.
1.1 Main features
• Parameter settings divided by level, user, installer or manufacturer, with
password-protected access;
• temperature and/or humidity control with dierentiated set point in
cooling and heating;
• automatic cooling/heating changeover;
• set point compensation in cooling and heating;
• selection of up to four daily time bands, with settings for each operating
mode;
• holiday and special day function, with reduced set point;
• cascaded control of heating / cooling devices so as to maximise energy
saving;
• operation in comfort, precomfort or economy mode, if time bands are
enabled;
• management of pumps, including in tandem, for preheating cooling/
reheating coils, with rotation, backup, overload alarms and anti-blocking
for each pump;
• minimum water temperature limit settable for opening the coil valves;
• dehumidication by cooling (also with dew point, or specic humidity set
point control) and reheating coil;
• bands for activating the preheating and reheating devices can be
overlapped to supplement each other;
• ON/OFF or modulating control of isothermal or adiabatic humidiers;
• “freecooling” and “freeheating”based on temperature or enthalpy;
• management of adiabatic humidiers for direct (DEC) and indirect
evaporative cooling (IEC);
• heat recovery with cross-ow heat recovery unit, run-around coil or heat
wheel, based on temperature or enthalpy;
• fan control by inverter based on pressure, ow-rate, speed or air quality
requirements;
• management of fans, including in tandem, with rotation and backup
functions;
• air quality control with CO2 and VOC (volatile organic compounds) probes;
• safety protectors for antifreeze, dirty lters, smoke/re, no air or water ow,
humidier alarm, inverter alarm, open door alarm;
• unit antifreeze and room protection;
• up to 4 independent auxiliary control loops, each with its own PI control
and control probe (for example to manage a second humidier);
• input/output test to check correctness of wiring during installation;
• connection via FieldBus port to serial probes, inverters, pCOe expansion
card;
• connection via BMS port to supervisor (PlantVisorPRO, PlantWatch…),
sending the values read by four probes.
1.2 Accessories available for FLSTDMAHUE
Below is a list of devices suitable for use with FLSTDMAHUE. CAREL features
passive, active and serial temperature, humidity and dierential pressure
probes, for room or duct installation, specically for the air handling unit
appliance. See the CAREL price list for the complete list.
Room temperature and humidity sensor
(Technical leaet +050001240)
Temperature sensors
P/N Type Range
DPWT011000 NTC -10T60°C
DPWT010000 0…1 V, 4…20 mA
DPWT014000 RS485 serial opto
Temperature and humidity sensors
P/N Type Range
DPWC112000 0…10 V, 0…10 V -10T60°C,10…90% RH
DPWC115000 NTC, 0…10V
DPWC110000 0…1 V, 4…20 mA
DPWC114000 RS485 serial opto
DPWC111000 NTC, 0…1V, 4…20mA
DPPC112000 0…10 V, 0…10 V -10T60°C,10…90% RH
DPPC110000 0…1 V, 4…20mA
DPPC111000 NTC, 0…1 V, 4…20mA
Duct temperature and humidity sensor
(Technical leaet +050001245)
Temperature sensors
P/N Type Range
DPDT011000 NTC -20T70°C
DPDT010000 0…1 V, 4…20 mA
DPDT014000 RS485 serial opto -20T60°C
Temperature and humidity sensors
P/N Type Range
DPDC112000 0…10 V, 0…10 V -10T60°C, 10…90% RH
DPDC110000 0…1 V, 4…20 mA
DPDC111000 NTC, 0…1V, 4…20mA
DPDC114000 RS485 serial opto

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Outdoor sensors
(Technical leaet +050001790)
P/N Type Range
DPUT011000 Temperature -50T90°C, resistive output NTC 10kΩ@25°C
DPUC110000 Temperature -35T80°C, resistive output NTC 10kΩ@25°C & 4-20 mA
Humidity 10 to 90 RH, 4 to 20 mA output
NTC temperature sensors
(Manual +030220655)
P/N Type Range
NTC*HP* 10 k±1%@25 °C, IP67 -50…105/50°C (air / uid)
NTC*WF* 10 k±1%@25 °C (Fast), IP67 -50…105°C (fast)
NTC*WHP* 10 k±1%@25 °C, IP68 -50…105°C
NTC*HF* 10 k±1%@25 °C,strap-on, IP67 -50…90°C 105°C
NTC*WS* 10 k±1%@25 °C, IP67 -40…105°C
PT1000 temperature sensors
(Manual +030220655)
P/N Type Range
PT1*HP* IP67 -50…105/50°C (air/ uid)
PT1*WF* IP67 -50…105°C
PT1*WP* IP67 -50…105°C
PT1*HT* IP67 -50…250°C
PT1*HF* IP67, strap on -50…105°C
Room air quality sensors
(Technical leaet +050001300)
DPWQ* DPDQ*
CO2 Sensors
P/N Range Output
DPWQ402000 0…2000 ppm 0…10 V
DPDQ402000 0…2000 ppm 0…10 V
CO2and VOC Sensors
P/N Range Output
CO2VOC
DPWQ502000 0…2000 ppm 0…100 % 0…10 V, 0…10 V
DPDQ502000 0…2000 ppm 0…100 % 0…10 V, 0…10 V
Dierential air pressure sensors
(Technical leaet +050000651)
P/N Range Output
SPKD00U5N0 0...1000 Pa; 0...2500 Pa; 0...3000 Pa; 0...5000 Pa 4...20 mA
SPKD00C5N0 -50...+50 Pa; -100...+100 Pa; 0...+50 Pa; 0...+100 Pa 4...20 mA
Dierential air pressure switches/ow switches
(Technical leaet +050000645/ +050000647)
Pressure switches
P/N Range Output
DCPD000100 0.5…5 mbar ON/OFF
DCPD001100 0.2…2 mbar ON/OFF
Flow switches
P/N Range Output
DCFL000100 1…9 m/s ON/OFF
Smoke and re sensors
(Technical leaet +050000520)
P/N Type Output
SFFS000000 Smoke detector, 24 Vdc PS ON/OFF
SFFF000000 Fire detector, 24 Vdc PS ON/OFF
USB /RS485 converter code CVSTDUTLF0/ CVSTDUMOR0
(Technical leaet +050000590)
CVSTDUTLFO CVSTDUMOR0
The USB/RS485 converter code CVSTDUTLF0 is used to connect a personal
computer running the pCO Manager program to the pLAN port (J10) on the
pCO controller, via a telephone connector. Alternatively, the CVSTDUMOR0
converter can be connected to other ports (gure).
Once the connection has been made, the application program software can
be loaded and the parameters set. See chapters “Software installation” and
”Appendix”.
CVSTDUTLF0
POWER SUPPLY
USB-RS485 converter
USB
C1
NO1 NO2 NO3
C1 C4
NO4 NO5 NO6
C4 C7
NO7
C7
NO8
C8
NC8
G G0
U1 u2 GND +VDC
+Vterm GND +5 VREF
U4 GND U5 GND
VG VG0 Y1 Y2 Y3 Y4
ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
J1
J10
FieldBus card BMS card
input: 24 V 50...60 Hz / 28...36 V
max. power: 45 VA/20W
CANL
CANH
GND
OFF
43 2 1
ON
J25
BMS2
CVSTDUMOR0
CVSTDUMOR0
pCO Manager
connessioni in alternativa
alternative connections
Fig. 1.a

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Smart key cod. pCOS00AKY0
(Technical leaet +050003420 / +050003410)
Smart key PCOS00AKC0
The Smart key is an electronic device used to program and service the pCO
family controllers. It simplies the transfer of data between the controllers
installed and a personal computer by exploiting the high capacity ash
memory for storing software applications, BIOS and variable logs. The pCO
is connected directly via the telephone connector using the cable supplied,
while to transfer the data to a personal computer, the USB adapter code
PCOS00AKC0 is required. The power supply comes either via the USB port on
the PC or from the controller, therefore no external power supply is needed.
Belimo MP-BUS card code PCO100MPB0
(Technical leaet +050003270)
This card connects the pCO to an MP-Bus network of I/O devices that use
the Belimo® standard. Up to 8 actuators can be connected at the same time,
over a maximum distance of 30 m. It is installed in the slot marked“eld card”..
BMS 485/Modbus card code PCOS004850
(Technical leaet +050003237)
This optically-isolated card connects the BMS serial port to an RS485 network,
for example to run the commissioning procedure from a personal computer
installed with pCO Manager. It is installed in the slot marked“serial card”. Once
commissioning has been completed, it can be replaced with one of the cards
listed in the table.
BMS cards Code
Ethernet card PCO1000WB0
BACnet MS/TP 485 card PCO1000BA0
Konnex PCOS00KXB0
LON PCO10000F0
pGD1 terminal
(Technical leaet +050001050)
The pGD1 graphic display is an electronic device that allows graphics
management using the icon-based display as well as supporting international
fonts.
pLDPRO terminal
(Technical leaet +050001840)
The pLDPRO graphic display is an electronic device that allows the complete
graphics management through the use of icons and international fonts. The
terminal oers a wide range of operating temperatures (-20T60 °C) and the
front panel guarantees a high degree of protection (IP65).
VFD inverter (serie Delta)
CAREL VFD inverters are available in various sizes for controlling fans at
constant pressure or xed speed. See “Connecting the VFD inverter”.
pCOe expansion card
(Technical leaet +050003265)
The expansion card code PCOE004850 is an electronic device, part of the
pCO sistema family, designed to increase the number of inputs and outputs
available on pCO controllers.
Belimo® actuators
The MP- Bus card can be used to control up to 8 Belimo® valve and damper
actuators, each where necessary with their probe or digital input, meaning
signicant savings in wiring required during installation.

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2. COMMUNICATION PORTS
2.1 Serial ports
See the pCO5+ manual +0300020EN for the hardware features of the serial
ports. The FLSTDMAHUE software manages the protocols shown in the table
on the specied serial ports.
Serial Type/ Connectors Protocol
Serial ZERO pLAN/J10, J11 pLAN
Serial ONE BMS 1 Serial card Extended Modbus
CAREL RS485
WinLoad
Serial TWO FieldBus 1 Serial card MP- Bus Belimo
Modbus Master
Serial THREE BMS 2 / J25 Extended Modbus
CAREL RS485
WinLoad
Serial FOUR FieldBus 2 / J26 (and J23 on Large and Extralarge version) Modbus Master
C1
NO1 NO2 NO3
C1 C4
NO4 NO5 NO6
C4 C7
NO7
C7
NO8
C8
NC8
NO12
C12
NC12
NO13
C13
NC13
C9
NO9
NO10 NO11
C9
G G0
U1 U2 U3 GND +VDC
+Vterm GND
+5 VREF
U4 GND U5 GND
VG VG0 Y1 Y2 Y3 Y4
ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
U6 U7 U8 GND
ID9 ID10 ID11 ID12 IDC9 ID13H ID13 IDC13 ID14 ID14H
J1 J24 J2 J3 J4 J5 J7
J8
J20
J21
J14
J10
J13
J12
J22
J16 J17 J18
J15
J6
J19
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
ID15H ID15 IDC15 ID16 ID16H Y5 Y6 ID17 ID18 IDC17 U9 GND U10 GND
FieldBus card BMS card
J23 FBus2
J11 pLAN
J25 BMS2 J26 FBus2
43 2 1
ONLY FOR
LARGE AND EXTRALARGE
MODELS
Fig. 2.b

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3. HARDWARE INSTALLATION
3.1 DIN rail assembly and dimensions
pco5+ pGD1
A
110
45
B
44
Fig. 3.a
156
125
67
18
30
82
Fig. 3.b
SMALL MEDIUM LARGE
A (mm) 227,5 315 315
B (mm) 60 60 60
B (with USB port/built-in terminal) 70 70 70
3.2 Description of the terminals on the pCO Large
C1
NO1 NO2 NO3
C1 C4
NO4 NO5 NO6
C4 C7
NO7
C7
NO8
C8
NC8
NO12
C12
NC12
NO13
C13
NC13
C9
NO9
NO10 NO11
C9
G G0
U1 U2 U3 GND +VDC
+Vterm GND +5 VREF
U4 GND U5 GND
VG VG0 Y1 Y2 Y3 Y4
ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
U6 U7 U8 GND
ID9 ID10 ID11 ID12 IDC9 ID13H ID13 IDC13 ID14 ID14H
J1 J24 J2 J3 J4 J5 J7
J8
J20
J21
J14
J10
J13
J12
J22
J16 J17 J18
J15
J6
J19
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
ID15H ID15 IDC15 ID16 ID16H Y5 Y6 ID17 ID18 IDC17 U9 GND U10 GND
FieldBus card BMS card
J23 FBus2
J11 pLAN
J25 BMS2 J26 FBus2
43 2 1
45
16
23 3 3 89 78
1011 1215
18
16 17 191515
9 7 3 8
13 14
Fig. 3.c
Key
1 power supply connector G(+), G0(-)
2 additional terminal power supply
power supply for ratiometric probes
+Vterm
+5 VREF
3 universal analogue inputs, NTC, PT1000, 0 to 1 V, 0 to 10 V, 4 to 20 mA U1, U2, U3, GND, +VDC e U6, U7, U8, GND e U9, U10, GND
4power supply for active probes +VDC
5button for setting pLAN address, secondary display, LED
6power supply at voltage A (*) for opto-isolated analogue output VG, VG0
7analogue outputs Y1, Y2, Y3, Y4, Y5, Y6
8ID...: digital inputs for voltage A (*) ID1, ID2, ID3, ID4, ID5, ID6, ID7, ID8, IDC1, e ID9, ID10, ID11, ID12, IDC9 e ID17, ID18, IDC17
9ID...: digital inputs for voltage A (*); IDH...: digital inputs for voltage B (**) ID13H,ID13, IDC13, ID14, ID14H e ID15H, ID15, IDC15, ID16, ID16H
10 pLAN telephone connector for terminal/downloading application
11 pLAN plug-in connector Rx-/Tx-, Rx+/Tx+, GND
12 reserved
13 reserved
14 reserved
15 Relay digital outputs C1, NO1, NO2, NO3, C1 e C4, NO4, NO5, NO6, C4 e C7, NO7, C7 e NO8, C8, NC8 e C9, N09,
N10, NO11, C9 e NO12, C12, NC12 e NO13, C13, NC13 e NO14, C14,
NC14, NO15, C15, NC15 e C16, NO16, NO17, NO18, C16
16 BMS2 port Rx-/Tx-, Rx+/Tx+, GND
17 FieldBus2 port Rx-/Tx-, Rx+/Tx+, GND
18 jumper for selecting FieldBus/BMS
19 FieldBus2 port Rx-/Tx-, Rx+/Tx+, GND
(*) Voltage A: 24 Vac or 28 to 36 Vdc (**) Voltage B: 230 Vac - 50/60 Hz
Tab. 3.a
Models and features pco5+SMALL pco5+MEDIUM pco5+LARGE pCOe (expansion card)
No. of analogue inputs 5 8 10 4
No. of digital inputs 8 14 18 4
No. of analogue outputs 4 4 6 1
No. of digital outputs 8 13 18 4

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3.3 Installation
Installation instructions
Important:
Environmental conditions
Avoid assembling the pco5+ board and the terminal in rooms with the
following characteristics:
• temperature and humidity that do not conform to the rated operating
data of the product;
• strong vibrations or knocks;
• exposure to aggressive and polluting atmospheres(e.g.: sulphur and
ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or
oxidation;
• strong magnetic and/or radio frequency interference (therefore avoid
installing the units near transmitting antennae);
• exposure of the pco5+ board to direct sunlight and to the elements in
general;
• large and rapid uctuations in the room temperature;
• environments where explosives or mixes of ammable gases are present;
• exposure to dust (formation of corrosive patina with possible oxidation
and reduction of insulation).
Positioning inside the panel
The position of the controller in the electrical cabinet must be chosen so
as to guarantee correct physical separation from the power components
(solenoids, contactors, actuators, inverters, ...) and the connected cables.
Proximity to such devices/cables may create random malfunctions that are
not immediately evident. The structure of the panel must allow the correct
ow of cooling air.
Important:
Wiring instructions
Important: when laying the wiring, “physically “ separate the power part
from the control part. The proximity of these two sets of wires will, in most
cases, cause problems of induced disturbance or, over time, malfunctions or
damage to the components. The ideal solution is to house these two circuits
in two separate cabinets. Sometimes this is not possible, and therefore the
power part and the control part must be installed in two separate areas
inside the same panel. For the control signals, it is recommended to use
shielded cables with twisted wires. If the control cables have to cross over the
power cables, the intersections must be as near as possible to 90 degrees,
always avoiding running the control cables parallel to the power cables.
CAREL highlights the following warnings:
• use cable ends suitable for the corresponding terminals. Loosen each screw
and insert the cable ends, then tighten the screws. When the operation is
completed, slightly tug the cables to check they are suciently tight;
• separate as much as possible the sensor signal, digital input and serial
line cables from the cables carrying inductive loads and power cables to
avoid possible electromagnetic disturbance. Never insert power cables
(including the electrical cables) and probe signal cables in the same
conduits. Do not install the sensor cables in the immediate vicinity of
power devices (contactors, circuit breakers or similar);
• reduce the path of the sensor cables as much as possible, and avoid spiral
paths that enclose power devices;
• avoid touching or nearly touching the electronic components tted on
the boards to avoid electrostatic discharges (extremely damaging) from
the operator to the components;
• do not secure the cables to the terminals by pressing the screwdriver with
excessive force, to avoid damaging the pco5+ controller;
• for applications subject to considerable vibrations (1.5 mm pk-pk 10/55
Hz), secure the cables connected to the pco5+ around 3 cm from the
connectors using clamps;
• if the product is installed in industrial environments (application of the EN
61000-6-2 standard) the length of the connections must be less than 30 m;
• all the extra low voltage connections (analogue and 24 Vac/Vdc digital
inputs, analogue outputs, serial bus connections, power supplies) must
have reinforced or double insulation from the mains network;
• in residential environments, the connection cable between the pco5+
controller and the terminal must be shielded;
• there is no limit to the number of cables that can be connected to an
individual terminal. The only limitation concerns the maximum current
crossing each terminal: this must not exceed 8 A;
• the maximum cross-section of the cable that connected to a terminal is
2.5 mm2 (12 AWG);
• the maximum value of the twisting torque to tighten the screw on the
terminal (torque tightening) is 0.6 Nm;
• installation must be performed according to the standards and legislation
in force in the country where the device is used;
• for safety reasons the equipment must be housed inside an electrical
panel, so that the only accessible part is the display and the keypad;
• in the event of malfunctions, do not attempt to repair the device, but
rather contact the CAREL service centre.
Anchoring the pco5+ board
The pco5+ is installed on a DIN rail. To fasten the unit to the DIN rail, press it
lightly against the rail. The rear tabs will click into place, locking the unit in
place. Removing the unit is just as simple, using a screwdriver through the
release slot to lever and lift the tabs. These are kept in the locked position
by springs.
Power supply
Power supply t the pco5+3 board (co controller with terminal connected):
2828 to 36 Vdc +10/-20% or 24 Vac +10/-15% 50 / 60 Hz; Maximum power
P= 15 W (power supply Vdc), P= 40 VA (Vac).
• power supply other than that specied will seriously damage the system;
• a Class 2 safety transformer, rating 50 VA, must be used in the installation to
supply just one pco5+ controller (30 VA for PCO5+1XSE);
• the power supply to the pco5+ controller and terminal (or pco5+
controllers and terminals) should be separated from the power supply
to the other electrical devices (contactors and other electromechanical
components) inside the electrical panel;
• if the power transformer secondary is earthed, check that the earth wire
is connected to terminal G0. This applies to all the devices connected to
the pco5+;
• if more than one pco5+ board is connected in a pLAN network, make sure
that the G and G0 references are observed (G0 must be maintained for all
boards);
• a yellow LED indicates that the pco5+ board is powered.
3.4 Connection of the analogue inputs
Note: FLSTDMAHUE lters the type of analogue inputs according to the
type of unit selected. The analogue inputs on the pco5+ board can be
congured for the more common sensors on the market: NTC, PT1000, 0 to 1 V,
0 to 10 V, 4 to 20 mA. The dierent types of probes can be selected by setting
the inputs on the screens in menu Hb: I/O conguration. See chapter 7.
Connecting active temperature and humidity probes
The pco5+ controller can be connected to all the CAREL DP* series active
temperature and humidity probes congured as 0 to 1 V or as 4 to 20 mA.
For the temperature probes use the 4 to 20 mA or NTC conguration, as
the 0 to 1 Vdc signal is limited to the range 0 to 1 V and therefore is not
always compatible with the standard 10 mV/°C signal of CAREL probes (for
negative temperatures and temperatures above 100 °C a probe alarm may be
generated). The inputs must be pre-congured on the screens in menu Hb:
I/O Conguration
Terminals
Probe terminal Description
pCO
GND M Reference
+Vdc +G Power supply
U1,U2,U3,U6, U7,U8 out H Active humidity output
out T Active temperature output
Note: for connection of the serial probes see chapter 7.

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13
Connecting the NTC/PT1000 temperature probes
The analogue inputs are compatible with 2-wire NTC/PT1000 sensors.
The inputs must be pre-congured on the screens in menu Hb:
I/O Conguration.
Terminals NTC
probe wire
pco5+
GND, 1
U1,U2,U3,U4,U5,U6,U7,U8,U9,U10 2
Connecting the pressure probes with current signal
The pCO can be connected to CAREL SPKT**** series active dierential
pressure probes or any pressure probe available on the market with 4 to 20
mA signal. The inputs must be pre-congured on the screens in menu Hb:
I/O Conguration.
Controller pCO terminals Probe
pco5+ +Vdc power supply
U1,U2,U3,U6,U7,U8 signal
Connecting the active probes with 0 to 10 V output
The inputs must be pre-congured on the screens in menu Hb:
I/O Conguration.
Terminals pCO 0…10V probe wire
GND Reference
U1,U2,U3,U6,U7,U8 signal
Remote connection of analogue inputs
The sizes of the cables for the remote connection of the analogue inputs are
shown in the following table:
Type of input size (mm2) for length up to
50 m
size (mm2) for length up to
100 m
NTC 0.5 1.0
PT1000 0.75 1.5
I (current) 0.25 0.5
V (voltage) 1.5 not recommended
Note: If the product is installed in industrial environments (application
of the EN 61000-6-2 standard) the length of the connections must be
less than 30 m. This length shouldn’t be exceeded in any case, to avoid
measurement errors.
3.5 Connecting the digital inputs
The pCO controller features digital inputs for connection to safety devices,
alarms, device status and remote enabling signals. These inputs are all optically
isolated from the other terminals, and can work at 24 Vac (+10/-15%) or 28 to
36 Vdc (-20/+10%), indicated as ID*, and some at 230 Vac (indicated as IDH*).
Note:
• if the digital inputs are connected to safety systems (alarms), the presence
of voltage across the contact should be taken as the normal operating
condition, while no voltage represents an alarm situation. This will ensure
that any interruption (or disconnection) of the input will also be signalled;
• do not connect the neutral in place of an open digital input; always
interrupt the phase.
Important: separate as much as possible the probe signal and digital
input cables from the inductive load and power cables, to avoid possible
electromagnetic disturbance. Never run power cables (including the
electrical panel cables) and probe signal cables in the same conduits.
24 Vac digital inputs
The following gure illustrates one of the most common connection
diagrams.
ID1
G
ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
GG0
G0
24 Vac
Note: the connection diagrams shown in these gures, which while
being the most common and convenient, do not exclude the possibility
of powering the digital inputs independently from the power supply to the
pco5+ board. In any case, the inputs only have functional insulation from the
rest of the controller..
24 Vdc digital inputs
All inputs can be 24Vdc.
The following gure represents one of the most common connection
diagrams for 24 Vdc digital inputs.
ID1
24 Vdc
ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
GG0
+
-
Fig. 3.d
230 Vac digital inputs
There are up to two groups of inputs powered at 230 Vac; each group has two
inputs. The groups feature double insulation between them and can refer to
dierent voltages. Within each group the digital inputs are not independent,
however: for example the inputs ID13H and ID14H, due to the common
terminal, must be powered at the same voltage to avoid dangerous short-
circuits and/or the powering of lower-voltage circuits at 230 Vac. In any case,
the inputs feature reinforced insulation from the rest of the controller.
input
pco5+ terminals ID13H, ID14H, ID15H, ID16H
ID13H
230 Vac
ID13 IDC13 ID14 ID14H
Fig. 3.e
Note:
• The range of uncertainty of the switching threshold is from 43 to 90 Vac.
• the voltage must be 230 Vac (+10/-15%), 50/60 Hz.

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“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019 14
Remote connection of digital inputs
Important: do not connect other devices to the digital inputs. The sizes
of the cables for the remote connection of the digital inputs are shown in the
following table:
size (mm2) for length up to 50 m size (mm2) for length up to 100 m
0,25 0,5
Note: if the product is installed in industrial environments (application
of the EN 61000-6-2 standard) the length of the connections must be
less than 30 m. This length shouldn’t be exceeded in any case, to avoid
measurement errors.
3.6 Connecting the analogue outputs
Connecting the 0 to 10 V analogue outputs
The pCO controller features optically-isolated 0 to 10 V analogue outputs, to
be powered externally at the same voltage as the controller, 24 Vac or 38-
36Vdc. The table below summarises the distribution of the analogue outputs
according to the versions available.
Model Terminals Reference
pCO small Y1, Y2, Y3, Y4 VG0
pCO medium Y1, Y2, Y3, Y4 VG0
pCO large Y1, Y2, Y3, Y4,Y5, Y6 VG0
3.7 Connecting the digital outputs
The pco5+ controller features digital outputs with electromechanical relays.
For ease of installation, the common terminals of some of the relays have
been grouped together.
Electromechanical relay digital outputs
The relays have been grouped together, depending on the insulation distance.
Within a group, the relays have functional insulation from one another and
thus must be powered at the same voltage (generally 24 Vac or 110/230 Vac).
Between groups, on the other hand, there is reinforced insulation and thus
the groups can be powered at dierent voltages. In any case, there is basic
insulation between each digital output terminal and the rest of the controller.
Model Relays with same insulation
Group 1 Group 2 Group 3 Group 4
small 1…3 4…6 7 8
Type of relay Type A Type A Type A Type A
medium 1…3 4…6 7 8
Type of relay Type A Type A Type A Type A
large NO 1…3 4…6 7 8
Type of relay Type A Type A Type A Type A
Model Relays with same insulation
Group 5 Group 6 Group 7 Group 8 Group 9
small
Type of relay
medium 9…11 12 13
Type of relay Type A Type A Type A
large NO 9…11 12 13 14…15 16…18
Type of relay Type A Type A Type A Type A Type A
Relay ratings SPDT, 2000 VA, 250 Vac, 8 A resistive
Approval UL60730 2 A resistive, 250 Vac, 30.000 cicli Pilot duty C300,
240 Vac, 30.000 cycles
EN 60730-1 2(2)A, 250 Vac, 100.000 cycles
Remote connection of digital outputs
The table below shows the cable sizes required for remote connection of
digital outputs:
AWG Cross-section (mm2) Current (A)
20 0.5 2
15 1.5 6
14 2.5 8
Note: when dierent relay outputs must be operated consecutively at
very close intervals (e.g. star-delta motor starter) in the order of hundreds of
ms, use relays belonging to the same group, according to the following table.
Relay groups for consecutive commands (~ 100 ms)
1 2 3 4 - pco5+ Large 5
Relay 1, 2, 3, 4 5, 6, 7, 8 9, 10, 11, 12, 13 14, 15, 16, 17, 18 22, 23, 24, 25, 26, 27, 28, 29
Important: using relays that belong to dierent groups can cause
delays in switching.
3.8 Connecting the fan inverter via analogue
input
To connect the inverter for fan control to the serial network, see paragraph
7.7. Alternatively, the fan inverter can be connected even if the MP-Bus card is
used to control Belimo® actuators. Connect the modulating analogue output
on the pco5+ (e.g.Y4), the alarm signal digital input (e.g. ID2) and the enabling
signal digital output (e.g. NO2). The inputs must be pre-congured on the
screens in menu Hb: I/O conguration. The gure illustrates the connection
to the Carel VFD-NXL; for other inverters, see the corresponding manual.
VY4
G0 IDC1 ID2 C1 NO2
pCO5+
ACM AVI
AVI1
RA
RA1
RB
RB1
DCM
G0
24 Vac
G
M1
FWD
Fig. 3.f
3.9 Connecting serial devices with Modbus/
Belimo® protocol
See paragraphs 7.6 and 7.8. The serial probes must be installed according to
the following diagram, and require the eld serial card PCO5+100FD10 to be
inserted in the special slot (“Field-Bus”). The power supply must be 24 Vac.
To connect Belimo® devices, use card PCO5+100MPB0. The following gure
shows two alternative connection possibilities.
3.10 Remote terminal with pLAN network
If the pco5+ boards are connected in a pLAN network, the terminal can be
installed up to 50 m away, using a telephone cable, while if using a shielded
twisted pair cable, TCONN6J000 and separate power supply, it can be
installed up to 500 m away.
Note: if the terminal is used in a residential environment the cable must
always be shielded. The maximum distance between the pco5+ and the
user terminal is shown in the following table:
type of cable power supply
distance
power supply
telephone 50 m taken from pco5+ (150 mA)
AWG24 shielded cable 200 m taken from pco5+ (150 mA)
AWG20/22 shielded cable 500 m separate power supply via
TCONN6J000
The maximum distance between two pco5+3 controllers with AWG20/22
shielded cable is 500 m.
Note: for further details and for the connection diagrams, see the pco5+
sistema manual (+0300020EN).

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15
3.11 Connection diagrams
The following paragraphs show the functional and wiring diagrams for the air
handling unit (AHU) managed by the various pco5+ boards, according to the
corresponding default parameters. Where possible, the symbols used refer to
the following standards:
• UNI 9511-1;
• UNI 9511-3.
pco5+ Small
AIR INPUT
Y2
DO1, Y4
DI7
U1
DI5
U5
T
p
M
M
T
Y3
M
DO4
F1
V1
V2
PR4
DO3
P2
AIR OUTPUT
H%
U3
DO7, Y1
DI6
HUM
DO2, Y4,
DI7
f1
f2
p
p
U4
T
f1
f2
DI3
DI4
U2
p
C1 C2
FAN2
FAN1
S1T1 T2 T3H1
PR3
INV2
INV1
PR2
PR1 AL1
DI1
AL
DO8
AL
DI8
On/Off
DI2
P1
Fig. 3.g
AI Analogue inputs AO Analogue outputs P1 Preheating coil pump
U1 Supply humidity Y1 Humidier P2 Cooling coil pump
U2 Dierential pressure outlet air Y2 Preheating valve T Temperature probe
U3 Frost protection temperature Y3 Cooling valve H Humidity probe
U4 Supply temperature Y4 Supply fan INV1 Supply fan inverter
U5 Outside temperature INV2 Return fan inverter
DI Digital inputs DO Digital outputs C1 Preheating coil
DI1 Generic alarm DO1 Supply fan C2 Cooling coil
DI2 Remote ON/OFF DO2 Return fan PR Dierential pressure switch/probe
DI3 Supply air ow alarm DO3 Preheating pump 1 HUM Humidier
DI4 Return air ow alarm DO4 Outside air damper F1, F2 Filters
DI5 Supply air lter alarm DO5 Filter alarm (not indicated) AL Generic alarm
DI6 Humidier alarm DO7 Humidier AL1 Generic alarm
DI7 Supply (return) fan inverter alarm DO8 Generic alarm S1 Outside damper
DI8 Preheating pump thermal overload alarm
Tab. 3.b
FieldBus card BMS card
!J1
G
G0
J24
+Vterm
GND
+5Vref
J2
U1
GND
+VDC
U3 U2
J3
U4
GND
U5 GND
J4
VG
Y2
Y1 VG0
Y3 Y4
J5
ID1
ID4
ID3 ID2
ID5 IDC1
ID8
ID7 ID6
!J12
C1
NO1
NO2 NO3
C1
J13
C4
NO4
NO5 NO6
C4
J14
C7
NO7
C7
NO8
C8
NC8
J15
J11
Rx-/Tx-
Rx+Tx+
GND
L
N
M
OUT
+V
analog output supply air fan (0 to 10 vdc)
DO1 DO2 DO3
L
N
DO4 DO5
DO8
M
OUT
+V
analog output cooling valve (0 to 10 vdc)
analog output preheat valve (0 to 10 vdc)
analog output humidifier command (0 to 10 vdc)
DO7
pCO5+ Small
Fig. 3.h

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“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019 16
pco5+ Medium
DI4 PR2
AIR
INPUT
U1
DI5
U8
T
p
MT
DO5
F1
AIR
OUTPUT
H%
U6
DO7,
Y1, DI6
HUM
DO2
p
p
U4
T
On/Off
DI2
DI3
Y3
M
V2
P3
U2
H%
U3
H%
U5
T
U7
T
DI7 p
F2
Y4
M
V3
Y2
M
V1
P1
DO3
DI12
P2
DO4
T1 H1 S1
DI11
T2 T3
P4
DO9
P5
DO10
DI13 DI14
DI9
C1
C2 C3
FAN1
FAN2
DO1 DI8
T4 H2
T5 H3
PR4
AL1
DI1
AL
DO8
PR3
PR1
REC
M
DO6
p
DI10
PR4
Fig. 3.i
AI Analogue inputs AO Analogue outputs P1/2 Preheating pump 1/2
U1 Supply humidity Y1 Humidier P3 Cooling pump
U2 Outside humidity Y2 Preheating valve T Temperature probe
U3 Return humidity Y3 Cooling valve H Humidity probe
U4 Supply temperature Y4 Reheating valve C1 Preheating coil
U5 Return temperature DI Digital inputs C2 Cooling coil
U6 Frost protection temperature DI1 Generic alarm PR Dierential pressure switch/probe
U7 Temperature downstream of coils DI2 Remote ON/OFF HUM Humidier
U8 Outside temperature DI3 Supply air ow alarm F1, F2 Filters
DO Digital outputs DI4 Return air ow alarm AL Generic alarm
DO1 Supply fan DI5 Supply air lter alarm AL1 Generic alarm
DO2 Return fan DI6 Humidier alarm S1 Outside damper
DO3 Preheating pump 1 DI7 Return lter alarm
DO4 Preheating pump 2 DI8 Supply fan thermal overload alarm
DO5 Outside air damper DI9 Return fan thermal overload alarm
DO6 Bypass damper DI10 Dirty heat recovery unit alarm
DO7 Humidier DI11 Preheating pump 1 thermal overload alarm
DO8 Generic alarm DI12 Preheating pump 2 thermal overload alarm
DO9 Reheating pump 1 DI13 Reheating pump 1 thermal overload alarm
DO10 Reheating pump 2 DI14 Reheating pump 2 thermal overload alarm
Tab. 3.c
Fieldbus card BMS card
!J1
G
G0
J24
+Vterm
GND
+5Vref
J2
U1
GND
+VDC
U3 U2
J3
U4
GND
U5 GND
J4
VG
Y2
Y1 VG0
Y3 Y4
J5
ID1
ID4
ID3 ID2
ID5 IDC1
ID8
ID7 ID6
!J12
C1
NO1 NO2 NO3
C1
J13
C4
NO4 NO5 NO6
C4
J14
C7
NO7
C7
NO8
C8
NC8
J15
J11
Rx-/Tx-
Rx+Tx+
GND
L
N
M
OUT
+V
analog output preheat valve (0 to 10 vdc)
analog output humidifier command (0 to 10 Vdc)
DO1 DO2 DO3
L
N
DO4 DO5
DO8
J6
U6 GND U8 U7
J7
ID9
ID12
ID11 ID10
IDC9
C9
NO9
NO10
J16
NO11
C9
C12
NC12
J17
NO12
C13
NC13
NO13
J18
J8
ID13H
ID14
ID13
ID14H
IDC13
M
OUT
+V
M
OUT
+V
analog output reheat valve (0 to 10 vdc)
analog output cooling valve (0 to 10 vdc)
DO9 DO10
pCO5+ Medium
DO6
Fig. 3.j

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“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019
17
pCO3Large
AIR
INPUT
U1
DI5
U8
T
p
T
F1
AIR
OUTPUT
H%
U10
DO7
Y1, DI6
HUM p
p
U4
T
DI3
U2
H%
U3
H%
U5
T
U9
T
DI7
p
F2
Y2
M
V1
P1
DO9 DO10
M
CO2
U7
DO3,DO4,DO5
DI10
R
DO1, Y4
DI11
f1
f2
DO2, Y4
DI12
f1
f2
Y3
M
V2
P2
DO11 DO12
REC
M
DO6
p
DI17
Y5 Y6
U6
p
DI4
T1 H1
C1 C2
T2 T3 T4 H2
T5 H3
DI8
DI9
DI13
DI14
DI15
DI16
AL1
DI1
AL
DO8
On/Off
DI2
PR2
PR1
PR4
PR5
S1
S2
PR3
P2 P3 P4
DI10
Fig. 3.k
AI Analogue inputs AO Analogue outputs P1…4 Pumps
U1 Supply humidity Y1 Humidier T Temperature probe
U2 Outside humidity Y2 Preheating valve H Humidity probe
U3 Return humidity Y3 Cooling valve C1 Preheating coil
U4 Supply temperature Y4 Supply fan C2 Cooling coil
U5 Return temperature Y5 Outside/exhaust air damper PR Dierential pressure switch/probe
U6 Dierential pressure outlet air Y6 Mixing damper HUM Humidier
U7 CO2 probe DI Digital inputs F1, F2 Filters
U8 Outside temperature DI1 Generic alarm AL Generic alarm
U9 Frost protection temperature DI2 Remote ON/OFF AL1 Generic alarm
U10 Temperature downstream of coils DI3 Supply air ow alarm S1 Outside/exhaust damper
DO Digital outputs DI4 Return air ow alarm S2 Mixing damper
DO1 Supply fan DI5 Supply air lter alarm R Heater
DO2 Return fan DI6 Humidier alarm
DO3 Reheat heater 1 DI7 Return air lter alarm
DO4 Reheat heater 2 DI8 Supply fan thermal overload alarm
DO5 Reheat heater 3 DI9 Return fan thermal overload alarm
DO6 Bypass damper DI10 Reheating heater thermal overload alarm
DO7 Humidier DI11 Supply fan inverter alarm
DO8 Generic alarm DI12 Return fan inverter alarm
DO9 Preheating pump 1 DI13 Preheating pump 1 thermal overload alarm
DO10 Preheating pump 2 DI14 Preheating pump 2 thermal overload alarm
DO11 Cooling pump 1 DI15 Cooling pump 1 thermal overload alarm
DO12 Cooling pump 2 DI16 Cooling pump 2 thermal overload alarm
DI17 Dirty heat recovery unit alarm Tab. 3.d
Fieldbus card BMS card
!J1 G
G0
J24
+Vterm
GND
+5Vref
J2
U1
GND
+VDC
U3 U2
J3
U4
GND
U5 GND
J4
VG
Y2
Y1 VG0
Y3 Y4
J5
ID1
ID4
ID3 ID2
ID5 IDC1
ID8
ID7 ID6
!J12
C1
NO1
NO2 NO3
C1
J13
C4
NO4
NO5 NO6
C4
J14
C7
NO7
C7
NO8
C8
NC8
J15
J11
Rx-/Tx-
Rx+Tx+
GND
L
N
M
OUT
+V
analog output preheat valve (0 to 10 vdc)
analog output humidifier command (0 to 10 Vdc)
DO1 DO2 DO3
L
N
DO4 DO5
DO8
J6
U6
GND
U8
U7
J7
ID9
ID12
ID11 ID10
IDC9
C9
NO9
NO10
J16
NO11
C9
C12
NC12
J17
NO12
C13
NC13
NO13
J18
J8
ID13H
ID14 ID13
ID14H
IDC13
M
OUT
+V
M
OUT
+V
analog output supply air fan (0 to 10 vdc)
analog output cooling valve (0 to 10 vdc)
DO9 DO10
E+
GND
E-
J23
J22
C16
NO16
NO17
NO18
C16
J21
C14
NC14
NO15
C15
NC15
NO14
J19
ID15H
ID15
IDC15
ID16
ID16H
J20
Y5
GND
U9 Y6
U10
IDC17
ID18 ID17
GND
M
OUT
+V
M
OUT
+V
analog output external air damper (0 to 10 vdc)
analog output mixing air damper (0 to 10 vdc)
DO11 DO12
DO6
pCO5+ Large
Fig. 3.l

ENG
“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019 18
3.12 DEC-IEC functional diagram
T
1
H
1
T2
H2
T3
H3
T
4
H4
Zonecontrol
FieldBus
IEC
DEC
Humifog
Master
Humifog
Slave
pCO5+
AOAO
AI
AI
AI = ingresso analogico/
analogue input
AO = uscita analogico/
analogue output
Fig. 3.m
The CAREL HumiFog humidier in the Master-Slave conguration can
manage both direct (DEC) and indirect evaporative cooling evaporative
cooling (IEC) at the same time.
Functions available in the application program
1. If enabling a humidier with On/O control (screens: Ha01, Ha13), DEC
cannot be activated; only the supply humidication function can be
activated. DEC requires a humidier with modulating control;
2. IEC is enabled independently of the humidier, and only on the analogue
output called “IEC”.;
Type of adiabatic
humidier
enabled
DEC
available
IEC
available
DEC + IEC
available
Humidi-
cation
enabled
Inputs/Outputs ena-
bled (screen)
On/O --> NO YES NO YES Hb35: On/O humidi-
er, Hb68: IEC
Modulating --> YES YES YES YES Hb57: Humidier,
Hb68: IEC
Tab. 3.e

ENG
“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019
19
4. USER INTERFACE
4.1 Graphic terminal
The pGD1 terminal, in the wall or panel-mounted versions, or included with
the pCO5+ board (built-in), features the display and the keypad, featuring
6 buttons that, pressed alone or in combination, are used to congure and
program the controller.
14:33 23/08/10 U:01
0,
TRiP: 31.6°C
Umidità ripresa: 23%rH
Stato:
Antigelo
Fig. 4.a
Button Description
Alarm
- Display the list of active alarms
- Reset alarms with manual reset
Access the main menu
Return to previous screen
Up / Down
Scroll screen displayed or increase / decrease value
Enter - Switch from display to programming parameters
- Conrm value and return to the list of parameters
Tab. 4.a
4.2 Display e tastiera
During normal operation, the graphic display shows the time, date and
selected unit, two selectable system variables, the active device icon and unit
control status.
14:33 23/08/10 U:01
0,
TRiP: 31.6°C
Umidità ripresa: 23%rH
Stato:
Antigelo
1
2
3
45
Fig. 4.b
Key
1 Time/date/unit displayed
2 Variable 1 on display
3 Variable 2 on display
4 Active devices
5 Control status
Note:
• the graphic display can be shared across a pLAN network with a maximum
of 8 pCO5+ controllers. See screen F. Board switch;
• the variables on the display can be selected on screen Gfc01.
Icone Descrizione
At least 1 fan on
OK No preheating coil/ reheating/ cooling active
OK Humidier not active / no dehumidication
Cooling coil active for cooling
Cooling coil active for dehumidication
At least 1 preheating or reheating coil active for heating or frost protection
Humidier active
Frost protection prevention (see“Functions”)
Heat recovery unit active
FC
FH Freecooling or freeheating active
Tab. 4.b
Note: if the unit is in freecooling or freeheating, the OK and OK icons
are displayed next to the corresponding icon to indicate that no coil or
humidier is active.
Regulation mode
Text on display Unit status
o
F
F
OFFbyALR O due to alarm
OFFbyBMS O from BMS (*)
OFFdaFSC O from time band
OFFbyDIN O from digital input
OFFbyKEY O from keypad
Wait Software checks in progress
O
N
Unit ON Unit on
Manual Manual actuator override (see Menu Gg)
Comfort (Autocomfort) Comfort mode (from time band)
Pre-Comf (Autoprec) Pre-comfort mode (from time band)
Economy (Autoecon) Economy mode (from time band)
Protect Protection mode
Startup Start-up phase
Shutdown Shutdown phase
Purging Purging phase
Tab. 4.c
(*) BMS = Building Management System
4.3 Programming mode
The parameters can be modied using the front keypad. Access diers
according to the level: user parameters (accessible without password),
Service (password=PW1) and Manufacturer (password = PW2). Press Prg to
access the main menu.
Menu principale
Menu principale
B. setpoint
C. Orologio/Fasce
Fig. 4.c
Main menu icons
A. On/O unit E. Data logger
B. Setpoint F. Board switch
C. Clock/scheduler G. Service
D. Input/Output H. Manufacturer
Tab. 4.d
Nota: the control remembers the last category of parameters accessed
and goes directly to this category when next accesses.
Set/display user parameters
The user parameters (A…F) are all the parameters accessible without
password, and include the following categories:
A. ON/OFF Unit: set the ways the unit is switched ON and OFF;
B. Setpoint: display the current temperature and humidity set points (B01),
set the temperature and humidity set point for cooling and heating
modes;
C. Clock/scheduler: set the current time and date (C01), the daily time
bands (C02) with weekly programming, holiday periods (C03), special
days (C04), days when daylight saving starts and ends (C05);
D. Input/output: display the inputs and outputs, indicating the position
of the terminals based on the markings screen printed on the pCO5+
boards and the values measured by the probes (D01 to D29);
E. Data logger: display up to 50 alarms with progressive numbering,
activation time and date, supply and return recorded;
F. Board switch: the terminal can be shared by up to 8 pCO5+ controllers.

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“FLSTDMAHUE”+030220961 - rel. 1.1 - 28.08.2019 20
Browsing
1. press Esc one or more times to move to the standard display;
2. press Prg to enter the main menu tree;
3. select the category of parameters (A…H) with Up / Down;
4. press Enter to enter the rst screen: the cursor ashes at the top left: press
Down to move to the following screen (e.g. B01ÆB02);
Setpoint B01
Temperatura: 23°C
Umidità: 50%rH
Setpoint B02
Comfort
Estate Inverno
Temp. 23°C 23°C
Umid. 50%rH 50%rH
Fig. 4.d
5. press Enter to set the rst parameter on the screen: the cursor ashes
in front of the value being set; press / to change the value
and conrm by pressing Enter. This moves automatically to the next
parameter.
Setpoint B02
Pre-Comf
Estate Inverno
Temp. 25°C 21°C
Umid. 55%rH 45%rH
Fig. 4.e
6. press Up/ Down and Enter to set this parameter or Enter to move to the
next parameter;
7. once having concluded the settings for the parameters on the screen,
press Enter to access the screen, Esc to move to the higher level and
continue settings parameters on other screens, following steps 3 to 7.
Note: modiable text values are shown on the display in UPPER CASE.
EXAMPLE 1: Setting the current time/date.
1. press Esc one or more times to move to the standard display;
2. press Prg: the display shows the main menu;
3. press UP/DOWN to move to category C. Clock/scheduler;
4. press Enter to display the rst screen: C01;
5. press Enter to modify the current time using UP/DOWN;
6. conrm by pressing Enter and move to the minutes;
7. repeat steps 5 and 6 three times to modify the date (day / month / year);
8. press Esc to exit the parameter setting procedure.
Orologio C01
Ora: 15:43
Data: 31/01/11
Giorno: Lunedì
Fig. 4.f
EXAMPLE 2: Setting the time bands.
1. press Esc one or more times to move to the standard display;
2. press Prg: the display shows the main menu;
3. press UP/DOWN to move to category C. Clock/scheduler;
4. press Enter and UP/DOWN to display the second screen C02: “Enable
bands” and choose “YES”;
5. choose the day of the week, the time each band starts (F1, F2, F3, F4) and
the corresponding operating mode;
6. if necessary copy the settings from one day to another.
Orologio C02
Abilità fasce: Si
Giorno VENERDI
Copia a DOMENICA NO
F1 06:30 ECONOMY
F2 07:00 PRE-COMFORT
F3 07:30 COMFORT
F2 17:00 ECONOMY
Fig. 4.g
Comfort
Economy
Precomfort
t
F1 F2
A
F3 F4
Off
Economy
Fig. 4.h
Note:
• set the set point for the Comfort, Precomfort and Economy operating
modes on screens B02, B03, B04 respectively;
• a dierent air ow-rate can be set for each time band. See the “Functions”
chapter.
Setting the Service parameters
The Service parameters (letter G) concern:
1. parameters modiable without password:
b. Change language;
c. Information: application, BIOS and BOOT version;
d. Summer/winter: summer/winter changeover mode (keypad, digital
input, BMS, auto, water temperature);
e. Working hours: read device operating hours;
2. parameters accessible with password PW1 (default =1234);
c. BMS conguration: choose the BMS communication protocol
(CAREL, LON, Modbus), communication speed (baud rate), network
address and activate commissioning service (Ge03);
d. Service settings: include device operating hour settings, probe
calibration, temperature control and change password (PW1);
e. Manual management: procedure for manually activating the devices
so as to prepare for commissioning.
Procedure: The setting/display procedure is similar to the one for the user
parameters, however password PW1 must be entered to access category G
parameters.
Note:
• if no button is pressed, after around 5 min the display automatically returns
to standard mode;
• the service password PW1 can be changed on screen Gfd03;
• once entered, the password remains active for a certain time, after which it
needs to be entered again.
Setting the Manufacturer parameters
The Manufacturer parameters (letter H) are only accessible after entering
password PW2 (default =1234),and concern:
a. Selection and conguration of the devices on the AHU;
b. I/O conguration: conguration of inputs and outputs, in other words
assignment of the position of the probes (e.g. supply, return, room
temperature), digital inputs (e.g. remote ON/OFF, summer/winter
changeover, alarms), digital outputs (e.g. fans, pumps, heaters) and
analogue outputs (e.g. fans, dampers, humidier);
c. Factory settings: setting of temperature and humidity control probes,
minimum and maximum limits for opening the dampers, fan activation
delay, coil activation delay on unit startup, travel times of three position
valves, temperature limits for activation of preheating, reheating and
cooling coils, delay time for activation of alarms and inverter (VFD)
conguration parameters for the supply and return fan. See the chapters
on commissioning and description of the functions.
Procedure: The setting/display procedure is similar to the one for the user
parameters, however password PW2 must be entered to access category H
parameters.
Important: the Manufacturer parameters can only be modied when
the controller is OFF.
Note:
• the manufacturer password PW2 can be changed on screen Hd03;
• entering the manufacturer password PW2 also allows access to the
parameters protected by service password PW1.