Controlli W500H User manual

Rev. d 01/12 1 DMP052E
User’s manual
W500H/H4
W500HMB/HMB4
Temperature and humidity controller
CONTROLLI
16010 SANT’OLCESE Genova – Italy
Tel. [phone] Fax :[phone]
E-mail: [email protected]
Web: www.controlli.eu
ISO9000

Rev. d 01/1 2 DMP052E
TABLE OF CONTENTS
INTRODUCTION................................................................................................................................................3
USER INTERFACE ............................................................................................................................................4
FUNCTION DESCRIPTION ...............................................................................................................................5
GENERAL.......................................................................................................................................................5
FOR ANALOGUE OUTPUT 1 IT IS POSSIBLE TO SELECT: ...................................................................5
FOR THE 1 ON/OFF DIGITAL RELAY OUTPUT IT IS POSSIBLE TO SELECT: .....................................6
FOR ANALOGUE OUTPUT 2 IT IS POSSIBLE TO SELECT: ...................................................................6
FOR THE DIGITAL RELAY OUTPUT 2 IT IS POSSIBLE TO SELECT:....................................................8
CONTROL TYPE............................................................................................................................................9
SET-POINT COMPENSATION.................................................................................................................... 10
MIN/MAX HUMIDITY LIMITS ON A1 AND D1 LOOPS............................................................................... 11
OPERATING MODES.................................................................................................................................. 12
MANUAL OVERRIDE KEY FOR THE OPERATING MODE....................................................................... 12
CLOCK ENABLE WITH TIME SCHEDULE.................................................................................................13
OUTSIDE DIGITAL ENABLE....................................................................................................................... 13
FACTORY DATA LOAD .............................................................................................................................. 13
STORING DATA IN PERMANENT MEMORY ............................................................................................ 14
LOADING DATA FROM PERMANENT MEMORY...................................................................................... 14
REMOTE SET.............................................................................................................................................. 14
LINKBUS COMMUNICATION ..................................................................................................................... 14
ENTHALPY COMPARISON WITH OUTDOOR HUMIDITY SENSOR FROM ANOTHER W500H ............ 15
MODBUS COMMUNICATION..................................................................................................................... 16
USE OF SUPERVISION OUTSIDE SENSOR FOR COMPENSATION...................................................... 16
ERROR SIGNALLING.................................................................................................................................. 16
FRONT PANEL AND DATA ACCESS MENU................................................................................................. 17
PARAMETER CONFIGURATION MENU....................................................................................................18
Parameters Loop PA1 - Mode A1............................................................................................................. 18
Parameters Loop PA1 - Mode A2............................................................................................................. 19
Parameters Loop PA1 - Mode A3 / Mode A4........................................................................................... 19
Parameters Loop Pd1 - Mode D1............................................................................................................. 20
Parameters loop Pd1- Mode D2............................................................................................................ 20
Parameters Loop Pd1- Mode D3 .......................................................................................................... 21
Sequence Parameters Pd1and Pd2- Mode D4................................................................................. 21
Parameters Loop PA2- Mode A1 .......................................................................................................... 21
Parameters Loop PA2- Mode A2 .......................................................................................................... 22
Parameter Loop PA2- Mode A4............................................................................................................ 22
Parameter Loop PA2- Mode A3............................................................................................................ 23
Parameter Loop Pd2 - Mode A1........................................................................................................... 23
Parameter Loop Pd2 - Mode A2........................................................................................................... 24
Parameter Loop Pd2 - Mode A3........................................................................................................... 24
PROGRAMME MENU FOR OPERATING MODES AND TIME SCHEDULES........................................... 25
Setting - Analogue output 1 / 0-10Volt PA1 Loop............................................................................ 26
Setting - Analogue output 2 / 0-10Volt PA2L o o p .............................................................................. 27
Setting - Relay Digital output 1 Loop Pd1 ............................................................................................. 27
Setting - Relay Digital output 1 Loop Pd1 ............................................................................................. 28
Setting - Relay digital output 2 Pd2 – 1, 2 and 3 operating mode ........................................................ 28
Setting - Relay digital output Pd1and Pd2 – 4 operating mode......................................................... 29
MENU DIAGRAM......................................................................................................................................... 30
TEMPERATURE CONTROL PARAMETER TABLES (LEVEL 1)................................................................... 31
HUMIDITY CONTROL PARAMETER TABLES (LEVEL 1)............................................................................. 32
TABLES OF OPERATING MODES AND TIME SCHEDULES (LEVEL 2).................................................. 33
SYSTEM APPLICATIONS............................................................................................................................... 35

Rev. d 01/1 3 DMP052E
INTRODUCTION
The temperature and relative humidity controller for AHU is provided with four control loops, two
analogue with 0-10Vdc output loops and two on/off hysteresis with relay output loops with
exchange contact.
All loops have independent control parameters and set points.
All the four loops share the three sensors (control, compensation and limit) coming from:
- ST temperature control sensor
- SC compensation sensor
- Relative humidity sensor, SH limit and/or compensation
The controller is also provided with two digital dry-contact inputs which can be used for outside
enable or summer/winter changeover functions.
Each loop can control its own output independently from the other using four different operating
modes.
The controller is characterized by a user interface composed of a 3 ½ digit FND display, of five
buttons and of twelve LEDs located on the front membrane.
Data on display depend on sensor presence and on enabling the various functions.
The controller is also provided with a two-wire local bus called “LinkBus”
Through the local bus port it is possible to connect up to 4 different devices with other devices of
the same W digital series with the purpose to share the sensor and the operating mode.
The local bus also allows the W500H to be supervised if at least one W500TMB or W500HMB is
connected.
The W500HMB version differs from the basic W500H for its on-board RS485 ModBus
communication interface and for the real time clock with daily and weekly schedules.
The W500HMB allows supervision for itself and for the other W500H or W500T devices (max 3)
connected to it through a LinkBus and shares with them the set time schedules.
NOTE: A pressure sensor on the analogue loop 2 or digital loop 2 can be used in place of the humidity
sensor.
Electrical connections:
1 GND 13 230 Vac F (W500H/HMB)
or 24 Vac F (W500H4/HMB4)
2 SH 14 230 Vac N (W500H/HMB)
or 24 Vac N (W500H4/HMB4)
3 SC 15 Rel 1 CO
4 ST 16 Rel 1 NA
5 GND 17 Rel 1 NC
6 Di1 18 Rel 2 CO
7 Di2 19 Rel 2 NA
8 LinkBus + 20 Rel 2 NC
9 LinkBus -
10 Bus 485 + 22 Ao1
11 Bus 485 – W500HMB 23 GND
12 GND 485 ONLY 24 Ao2
Legend:
ST: PTC temperature control sensor
SC: PTC outside compensation sensor
SH: 0-10Vcc humidity control sensor
U1: User 1 (ex. Fan, circulation pump, on/off valve, etc.)
U2: User 2 (ex. on/off humidifier, on/off damper, etc.)
S1: 0 – 10 Volt proportional actuator
S2: 0 – 10 Volt proportional actuator

Rev. d 01/1 4 DMP052E
USER INTERFACE
The device is characterized by a user interface
composed of a 3 ½-digit FND display, five keys and
twelve LEDs located on the front membrane. The
information displayed on screen depends on whether
the sensors are present or not and on the related
function enable. Using the buttons it is possible to
navigate a cascade menu, which allows configuring
individually the functions to be assigned to the 4
independent outputs.
Description of keys
Button Up to increase values.
Used both for parameter modification and for moving inside the menus.
Button Down to decrease values.
Used both for parameter modification and for moving inside the menus.
Cancel and menu exit
Parameter programming and confirmation
Operating mode override
Led description
Ao1 Led associated to analogue output 1, it is on during data display.
Ao2 Led associated to analogue output 2, it is on during data display.
ST Led associated to temperature control sensor value.
SC Led associated to compensation sensor value.
SH Led associated to humidity sensor value.
DI1 Led associated to digital input 1, it is on when the input is active (closed contact).
DI2 Led associated to digital input 2, it is on when the input is active (closed contact).
Rel1 Led associated to relay output 1, it is on when the output is active.
Rel2 Led associated to relay output 2, it is on when the output is active.
@Led associated to anomaly signal.
Ovr Led associated to override status of Operating mode
Mode Led associated to Operating mode.
On Comfort
Blinking Reduced
Off Stop

Rev. d 01/1 5 DMP052E
FUNCTION DESCRIPTION
GENERAL
First of all it is necessary to establish the operating mode for each control loop.
The operating mode is the function to be assigned to a specific output. The output of each loop
depends on the sensor which carries out control.
For the A1 and D1 loops it is possible to set temperature sensor ST, whilst for A2 and D2 loops it is
possible to set either relative humidity sensor or enthalpy sensor (temperature only or both
temperature and humidity; in the latter case two controllers are needed).
A1 and D1 loops control temperature sensor ST for Ao1 and Rel1 outputs.
Heating control means that the output moves in an inversely proportional way with respect to the
value measured by the temperature sensor, vice versa is the meaning of cooling control.
Operating modes are:
FOR ANALOGUE OUTPUT 1 IT IS POSSIBLE TO SELECT:
MODE A1: HEATING LOOP
If the output value has to increase when the control sensor
value drops under the operating set.
When the set point is achieved the output is zero.
If the control temperature drops under the SPC Heating Set
Point minus BPC Heating Proportional Band the relevant
analogue output goes to 100% equivalent to 10 Vdc.
MODE A2: COOLING LOOP
If the output value has to increase when the control sensor
value exceeds the operating set.
When the set-point is achieved the output is zero.
If the control temperature goes above the SPF Cooling Set
point plus BPF Cooling Proportional Band the relevant
analogue output goes to 100% equivalent to 10 Vdc.
MODE A3: HEATING / COOLING LOOP FROM S/W
CHANGEOVER
If the Heating or Cooling Loop is enabled through the
contact input (D.i.2) in order to carry out a season
changeover. When the D.i.2 contact is open, the Loop
passes to “Heating” control type; under closed contact
the Loop passes to “Cooling” control type. The two
“Set” (SPC, SPF) and the two proportional bands (BPC,
BPF) are independent.
MODE A4: HEATING LOOP / COOLING IN SEQUENCE
If it is required to exploit the 0-5 6-10 V control characteristic of
CONTROLLI actuators to realize a Heating Cooling sequence
with a unique 0–10 Vdc analogue output. When the set point is
achieved the output is 5,5 Vdc. If the control Temperature goes
below the Heating Set Point value (SPC) minus Heating
Proportional Band (BPC), the relevant analogue output goes to
0 Vdc. If the control Temperature goes above the value the
Cooling Set Point value (SPF) plus Cooling Proportional Band
(BPF) the relevant analogue output goes to 10 Vdc.
In this case, if a heating-Cooling sequence is required, the two actuators must be connected in
parallel to the same output selecting the range 0 – 5 Vdc with reverse action for the actuator, which
manages the heating channel, while for the actuator managing the Cooling channel, it is necessary
to select the range 6 – 10 Vdc with direct action.

Rev. d 01/1 6 DMP052E
FOR THE 1 ON/OFF DIGITAL RELAY OUTPUT IT IS POSSIBLE TO SELECT:
MODE D1: ON/OFF HEATING HYSTERESIS
If the output value must turn to ON when the value of the Control
Sensor goes below the Operating Set minus the Hysteresis
band.
When the set point is achieved, the relay output is OFF.
MODE D2: ON/OFF COOLING HYSTERESIS
If the output value must turn to ON when the control sensor
value goes above the Operating Set plus the Hysteresis band.
When the Set Point is achieved, the relay output is OFF.
MODE D3: HEATING/COOLING HYSTERESIS FROM S/W
CHANGEOVER
If it is required to enable the heating or cooling hysteresis
through the contact input (D.i.2) to carry out a season
changeover. When the D.i.2 contact is open, the Loop passes to
“Heating” control type; under closed contact the Loop passes to
“Cooling” control type.
The two “Set” (SPC, SPF) and the two proportional bands (BPC,
BPF) are independent.
MODE D4: ON/OFF DELAY
If it is required to enable or disable a relay output with a
specified delay at stop and/or start.
The delay is considered with respect to an event, which
can be:
- Operating Mode (NM and RF => ON, FA => OFF), if a
stop and/or start delay of a device following the
Operating Mode is required.
- The status of one of the two digital inputs (D.i.1 or
D.i.2), if it is required a stop and/or start delay of a device following the status of one or both dry
contact inputs.
- The status of the other Relay output, if it is required a stop and/or start delay of a device
following the status of the other digital relay output.
The ON Delay (RA) and the Off Delay (RS) can be set individually in seconds.
The events generating the changeover are according to an “OR” logic, which means that, if more
than one event condition is enabled, it is sufficient that only one is true.
The maximum allowed delay is 30 minutes.
A2 and D2 loops control, for the Ao2 and Rel2 outputs, the SH humidity sensor only through the
operating modes A1, A2 and A4, whilst in the operating mode A3 they control enthalpy only in
temperature or complete enthalpy (temperature and humidity) if the outdoor humidity signal
through LinkBus is supplied (see page 15).
FOR ANALOGUE OUTPUT 2 IT IS POSSIBLE TO SELECT:
Mode A1: HUMIDITY LOOP
If the output value must increase when the SH Humidity Sensor
value drops under the set point. When the set point is achieved, the
output is zero. If the SH Humidity Sensor value drops under the SPH
Humidity Set point minus BPH Humidity Proportional Band, the
relevant analogue output goes to 100% equivalent to 10Vdc.

Rev. d 01/1 7 DMP052E
MODE A2 DEHUMIDIFICATION LOOP
If the output value must increase when the SH Humidity Sensor value goes above the operating
set. When the set point is achieved the output is zero.
If the SH Humidity Sensor value exceeds the SPD Dehumidification Set Point value plus BPD
Dehumidification Proportional Band, the relevant analogue output goes to 100% equivalent to
10Vdc.
MODE A3 ENTHALPY CONTROL WITH SUMMER/WINTER CHANGEOVER SET
It enables the Enthalpy Control with summer/winter changeover set point through (D.i.2) contact.
By D.i.2 open contact, the loop goes in Enthalpy control with winter set-point, by closed contact,
loop goes in Enthalpy control with summer set-point.
The two sets (STI) winter and (STE) summer are independent.
The (BEI) internal and (BEE) external proportional bands are always the same both in winter and in
summer, as well as the (LLA) minimum opening limit value.
By outdoor Humidity signal it is necessary to set also SHI and SHE winter and summer humidity
set points and (bPH) humidity band.
The comparison between internal and external enthalpy must last for at least a time exceeding 15
min. to avoid output hunting when the enthalpy values are almost the same.
MODE A4: HUMIDIFICATION/DEHUMIDIFICATION
SEQUENCE LOOP
To be selected when it is required to exploit the 0-5, 6-10
control characteristics of Controlli actuators to perform a
humidification/dehumidification sequence with a unique 0-10
Vdc output, driving in sequence proportional humidifier and
cooling valve.
When the set point value is achieved, the output is 5.5 Vdc
When the control humidity drops under the (SPH) humidity set
point minus (BPH) Humidity Proportional Band, the relevant
analogue output is 0 Vdc.
When the control humidity exceeds the (SPD) Dehumidification Set Point value plus (BPD)
Dehumidification Proportional Band, the relevant analogue output is 10 Vdc.
The two actuators must be connected in parallel to the same output setting the range 0-5Vdc with
reverse action for the actuator which drives the proportional humidifying channel, whilst for the
actuator which drives the cooling channel it is necessary to select the range 6-10Vdc with direct
action.

Rev. d 01/1 8 DMP052E
FOR THE DIGITAL RELAY OUTPUT 2 IT IS POSSIBLE TO SELECT:
MODE D1: ON/OFF HUMIDIFICATION HYSTERESIS
If the output value must turn to ON when the value of HHumidity Sensor drops under (SPH)
operating humidity set value minus (BPH) hysteresis band.
When the set point is achieved the relay output is OFF.
MODE D2: ON/OFF DEHUMIDIFICATION HYSTERESIS
If the output value must turn to ON when the value of H
Humidity Sensor exceeds the SPD operating dehumidification
set point plus (BPD) hysteresis band.
When the set point is achieved the relay output is in OFF status.
MODE D3: ENTHALPY HYSTERESIS WITH S/W
CHANGEOVER SET
If the enthalpy control with S/W changeover set through (D.i.2) contact input is required.
By D.i.2 open contact, the loop goes to enthalpy control with winter set-point; by closed contact the
loop goes to enthalpy control with summer set-point.
The two sets STI winter and STE summer are independent.
The (BEI) internal and (BEE) external proportional bands are always the same both in winter and in
summer.
By outdoor humidity signal it is necessary to set also SHI and SHE winter and summer humidity set
points and (bPH) humidity band.
The comparison between internal and external enthalpy must last for at least 15 min. to avoid
output hunting when enthalpy values are almost the same.
MODE D4: ON/OFF DELAY
If it is required to enable or disable a relay output with a specified stop and/or start delay.
The operation is the same as described for mode D4 of the Relay 1 digital output (see page 6).

Rev. d 01/1 9 DMP052E
CONTROL TYPE
Once the OPERATING MODE is stated, it is necessary to set the CONTROL TYPE, i.e. the control
criteria used by the OPERATING MODE. The control type can be:
- Proportional or Proportional + Integral (P or P+I)
- With fixed operation set point or compensated in function of Compensation Sensor.
- With or without minimum and/or maximum limit in function of Limit Sensor.
PROPORTIONAL CONTROL (P)
Given a SET POINT (required value), the difference between this value and the VALUE detected
by the Control Sensor is called ERROR.
A proportional control is obtained when the value of a controller output moves proportionally to the
ERROR. The PROPORTIONAL BAND determines the quantity of the action (gain) in function of
ERROR. When the ERROR is equal to the PROPORTIONAL BAND the output value is equal to
100 %.
Setting a too small PROPORTIONAL BAND can generate oscillation phenomena of the output.
Setting an excessively wide PROPORTIONAL BAND can generate a change from the SET of the
controlled temperature.
PROPORTIONAL CONTROL + INTEGRAL (P+I)
If an I action is added to P action, the result is a more accurate control, which takes into account
the error variation in time. It is necessary to define an INTEGRATION TIME, which states the time,
after which the Proportional action is restored. Generally, INTEGRAL action is necessary when the
PROPORTIONAL BAND allows a variation, conferring to the INTEGRAL action the task to cancel
the remaining error.
The two 0-10 Vdc analogue outputs can be P or P+I, therefore, the parameters to be set for each
output will be:
- SET POINT (with fixed-point control)
- PROPORTIONAL BAND
- INTEGRATION TIME (if I action is enabled)
For analogue output 2 in A3 operation mode (enthalpy control with s/w changeover set), control
can be proportional only, and not P+I.
The 2 relay outputs can be only P, the parameters to be set will be:
- SET POINT (with fixed-point control)
- HYSTERESIS BAND
For the analogue output 1 and the relay output 1 it is used the temperature sensor connected to ST
terminal if not otherwise specified (“sharing sensors” see paragraph concerning LinkBus).
If the temperature sensor is not connected correctly to ST terminal or is not shared correctly with
other devices Led @ is lighted.
For the analogue output 2 and the relay output 2 it is used the humidity sensor connected to SH
terminal if not otherwise specified (“sharing sensors” see paragraph concerning LinkBus)
If the humidity sensor is not correctly connected to SH terminal or is not shared correctly with other
devices, LED @ is lighted.
If necessary it is possible to connect the SH terminal to another sensor (air quality, temperature or
another 0-10Vdc signal transmitter) the signal value shall anyway be expressed as a percentage
with respect to the range end.
In the operating MODE D4 the relay output behaves as a timed sequencer and it controls
depending on time events and not on temperature/humidity values.
See page 21 to set the Operating Modes and control types.

Rev. d 01/1 10 DMP052E
SET-POINT COMPENSATION
The operation SET-POINT can be fixed or determined by a compensation slope according to the
value given by the compensation sensor.
Both A1 and D1 temperature loops can be temperature
compensated (the SC sensor is necessary) or humidity
compensated (SH sensor). It is necessary to set the Cth
parameter to state the temperature and humidity
compensation. Both A2 and D2 humidity loops can be
temperature compensated only (the SC sensor is
necessary).
The compensation slope is a broken line touching two
points and given by four values.
Depending on the value given by the sensor, a set-point value shall be defined in a range between
a minimum and a maximum.
“Negative Compensation” means when the operating set-point increases while the compensation
sensor value decreases.
“Positive Compensation” means when operating set-point
increases by the increasing of compensation sensor
value.
It is possible to set Negative and Positive Compensations
both for temperature and humidity control loops.
Each operation set-point value, both by temperature
(heating and/or cooling) and by humidity
(humidification/dehumidification) control loop can be
associated to a relevant slope resulting by two values:
- SET-POINT 1 corresponding to TEMPERATURE 1
- SET-POINT 2 corresponding to TEMPERATURE 2
If the Compensation Sensor is present and the Compensation of an Operating Mode is enabled, it
is necessary to determine the four values of the curve. Such values become eight in case of
Operating Mode A3, A4 and D3 because it is necessary to set compensation both for the heating
and for the cooling loops. In the latter case, if compensation should be disabled for one of the two
Loops only, it is necessary to set the minimum Set-point equal to the maximum value achieving a
fixed operation Set-point. It is not possible to enable compensation in Operating Mode D4.
While the A2 and D2 loops can be compensated through the SC temperature sensor, loops A1 and
D1 may be temperature or humidity compensated. The selection is made under the Level II menu
(label Cth).
For the temperature compensation the Compensation Sensor used is the one connected to SC
input, if not differently specified (“SC sharing” see paragraph related to LinkBus). To enable
Compensation first connect or share the Compensation Sensor. If compensation is enabled on any
Operating Mode and the Compensation Sensor is not connected correctly to SC terminal or is not
shared correctly with other devices, the Anomaly led @lights up and the control Set-point
becomes the value set for fixed point, i.e. without Compensation.
For humidity compensation the possible absence of SH sensor does not generate any fault since
its value can be 0.
By humidity control loops, the possibility to compensate the set point depending on SC signal is
used either to perform the remote setting of humidity set point through a potentiometer (see remote
set page 14) or e.g. to compensate linearly minus the room humidity set according to the inner
temperature of glass surface (anti-frost function in swimming pools or wet environments).
In this case, the temperature sensor connected to SC must be located in the indoor part of the
glass wall.
For all compensation parameters settings see page 18