CIAT PRO-DIALOG+ User manual

Instruction manual
EREBA ACCESS (8-40 kW)
11- 2016
10183
PRO-DIALOG+

EN - 1 EREBA ACCESS
CONTENTS
The cover photos are solely for illustration and form no part of any offer for sale or any sale contract. The manufacturer
reserves the right to change the design at any time without notice.
1 - SAFETY CONSIDERATIONS. .......................... 2
1.1 - General........................................................... 2
1.2 - Avoid electrocution.......................................... 2
2 - GENERAL DESCRIPTION. .............................. 2
2.1 - General........................................................... 2
2.2 - Abbreviations used. ........................................ 2
3 - HARDWARE DESCRIPTION............................ 3
3.1 - General........................................................... 3
3.2 - Electrical supply to boards.............................. 3
3.3 - Light emitting diodes on boards. ..................... 3
3.4 - The sensors. ................................................... 3
3.5 - The controls. ................................................... 3
3.6 - Connections at the user terminal block. .......... 4
4 - SETTING UP PRO-DIALOG+ CONTROL. ....... 6
4.1 - General features.............................................. 6
4.2 - Default screen characteristics......................... 6
4.3 - Password screens........................................... 6
4.4 - Menu screen characteristics. .......................... 6
4.5 - Data screen or configurable parameter
characteristics............................................... 6
4.6 - Parameter modification. .................................. 7
4.7 - Operating mode screen................................... 7
4.8 - Menu tree structure......................................... 8
4.9 - Detailed menu description. ............................. 9
5 - PRO-DIALOG+ CONTROL OPERATION........ 17
5.1 - Start/stop control............................................ 17
5.2 - Heating/cooling/standby operation................. 17
5.3 - Heat exchanger water pump control............... 18
5.4 - Control interlock contact. ............................... 18
5.5 - Heat exchanger frost protection. .................... 18
5.6 - Control point................................................... 19
5.7 - Demand limit.................................................. 19
5.8 - Night mode..................................................... 19
5.9 - Capacity control............................................. 20
5.10 - Head pressure control.................................. 20
5.11 - Defrost function............................................ 20
5.12 - Desuperheater option. ................................. 20
5.13 - Additional electric heater stage control. ....... 20
5.14 - Control of a boiler......................................... 20
5.15 - Master/slave assembly................................. 20
6 - DIAGNOSTICS - TROUBLESHOOTING. ........ 22
6.1 - General.......................................................... 22
6.2 - Displaying alarms........................................... 22
6.3 - Resetting alarms. ........................................... 22
6.4 - Alarm codes................................................... 23

1 - SAFETY CONSIDERATIONS
1.1 - General
Installation,start-upandservicingofequipmentcanbehazardous
if certain factors particular to the installation are not considered:
operating pressures, presence of electrical components and volt-
ages and the installation site (elevated plinths and built-up struc-
tures). Only properly qualied installation engineers and highly
qualied installers and technicians, fully trained for the product,
are authorised to install and start-up the equipment safely. Dur-
ing all servicing operations all instructions and recommendations
which appear in the installation and service instructions for the
product, as well as on tags and labels xed to the equipment and
components and accompanying parts supplied separately, must
be read, understood and followed.
• Apply all standard safety codes and practices.
• Wear safety glasses and gloves.
• Use the proper tools to move heavy objects. Move units
carefully and set them down gently.
1.2 - Avoid electrocution
Only personnel qualied in accordance with IEC (International
ElectrotechnicalCommission)recommendationsmaybepermitted
access to electrical components. It is particularly recommended
that all sources of electricity to the unit be shut off before any work
is begun.Shut offthe mainpower supply atthe main circuitbreaker
or isolator.
IMPORTANT: This equipment conforms to all applicable
codes regarding electromagnetic compatibility.
2 - GENERAL DESCRIPTION
2.1 - General
Pro-Dialog is an electronic control system to regulate units of
the following types:
• air-cooled liquid chillers
• reversible heat pumps.
These units have one or two refrigerant circuits.
Pro-Dialog controls:
• compressor start-up to control the water loop
• the fans to optimise operation of each refrigerant circuit
• the defrost cycles to ensure the operation of the
refrigerant circuits (reversible heat pumps only).
As standard Pro-Dialog offers three on/off commands:
• Local - on/off command using the keyboard
• Remote - wired on/off command using volt-free contacts
• Network - proprietary protocol on/off command.
The command type is selected in advance by keyboard.
2.2 - Abbreviations used
In this manual, the refrigerant circuits are called circuit A and
circuit B. The compressors in circuit A are labelled A1, A2 and
A3. Those in circuit B are B1 and B2.
The following abbreviations are used frequently:
LED Light Emitting Diode
LEN Internal communication bus linking the main board to
the slave boards
SCT Saturated condensing temperature
SST Saturated suction temperature
EXV Electronic expansion valve
PD-AUX Auxiliary input/output board
EREBAACCESS EN - 2

Figure 1 - Control board
3.2 - Electrical supply to boards
All boards are supplied from acommon 24 V a.c. supply referred
to earth.
CAUTION: Maintain the correct polarity of the power
supply connection of the boards, to ensure that
they are not damaged.
In the event of a power supply interrupt, the unit restarts auto-
matically without the need for an external command. However,
any faults active when the supply is interrupted are saved and
may in certain cases prevent a circuit or unit from restarting.
3.3 - Light emitting diodes on boards
All boards continuously check and indicate the proper opera-
tion of their electronic circuits.Alight emitting diode (LED) lights
on each board when it is operating properly.
• The red LED that ashes for a two-second period - one
second on, one second off - indicates correct operation.
A different rate indicates a board or a software failure.
• The green LED ashes continuously on all boards to
show that the board is communicating correctly over its
internal bus. If the LED is not ashing, this indicates a
LEN bus wiring problem.
• The orange LED of the master board ashes during any
communication via the proprietary protocol communica-
tion bus.
3.4 - The sensors
Pressure sensors
Two types of electronic (high and low-pressure) sensors are
used to measure the suction and discharge pressure in each
circuit.
Thermistors
The heat exchanger water sensors are installed in the entering
and leaving side. The outdoor temperature sensor is mounted
under a metal plate.An optional water system temperature sen-
sor can be used for master/slave assembly control (in the case
of leaving water control).
In heat pump units a sensor placed on an air heat exchanger
pipe ensures defrost operation.
3.5 - The controls
Water circulation pump
The controller can regulate one or two water heat exchanger
pumpsandtakescare ofautomatic change-overbetweenpumps.
Heaters
They protect the heat exchanger (and the piping for units without
pump) against frost, if the unit has stopped and is left energised.
Boiler
This output authorises start/stop of a boiler.
Contrast control
wheel
Back to the previous
screen
On/o key
- Unit stopped
- List of available operating
modes (only in local mode)
Green LED
Unit has stopped
Unit starts up
Unit in operation
Red LED
No alarm
Warning
Circuit or complete unit error
Up/Down key
- Navigation
- Modication
Enter key
- Validation
- Selection access
3 - HARDWARE DESCRIPTION
3.1 - General
The control system consists of an NRCP2-BASE board for sin-
gle-circuit units (up to two compressors) and two NRCP2-BASE
boards (one master and one slave board) for units with three or
four compressors. The heat pump units that are equipped with
the additional electric heater stage option uses an additional PD-
AUX board.
All boards communicate via an internal LEN bus. The NRCP2-
BASE boards continuously manage the information received
from the various pressure and temperature probes. The NRCP2-
BASE master board contains the program that controls the unit.
The user interface includes an alphanumeric eight-line display,
two LEDs with ve navigation keys as well as a contrast control
wheel.
EN - 3 EREBA ACCESS

Description Connector/
channel Terminal Board Remarks
Contact 1: Start/stop J4/CH 8 32-33 NRCP2-BASE Used with the remote operating mode (Remote).
Contact 2: Heating/cooling selection J4/CH 9 63-64 NRCP2-BASE Used with the remote operating mode (Remote) in accordance with the boiler or
heat pump configuration
Contact 3: Demand limit selection 1 J4/CH 10 73-74 NRCP2-BASE
Customer safety loop input J4/CH 11A 34-35 NRCP2-BASE
Contact 3 bis: Demand limit selection 2 J5/CH 12 NRCP2-BASE Unit without NRCP2-SLAVE board.
Setpoint selection J5/CH 13 NRCP2-BASE Used with the remote operating mode (Remote), unit without NRCP2-SLAVE board.
Desuperheater contact J5/CH14 NRCP2-BASE Used on units with desuperheater
Heat exchanger heater command J2B/CH 21 NRCP2-BASE Frost protection, when the unit is stopped.
Command, water pump 1 J2B/CH 22 NRCP2-BASE
Command, water pump 2 J2B/CH 23 NRCP2-BASE The change-over between the two pumps is configurable
Alarm relay output J3/CH 24 30A-31A NRCP2-BASE
Unit operation relay output J3/CH 25 37-38 NRCP2-BASE
Network connection J12 NRCP2-BASE RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Setpoint selection J4/CH 8 65-66 NRCP2-SLAVE Used with the remote operating mode (Remote), unit with NRCP2-SLAVE board.
Contact 3 bis: Demand limit selection 2 J4/CH 10 75-76 NRCP2-SLAVE Used with the remote operating mode (Remote), use of NRCP2-SLAVE board,
depending on the size
Relay output for boiler command J3/CH 25 NRCP2-SLAVE Use of NRCP2-SLAVE board, depending on the size
Triac output for boiler command J2B/CH 20 NRCP2-BASE Cooling only unit without NRCP2-SLAVE board
Triac output for boiler command J3/CH 5 PD-AUX Heat pump unit without NRCP2-SLAVE board
The following table summarises the connections at the user terminal block.
NRCP2-BASE control board Optional PD-AUX board
J2A
J2B
J3
J4
J12
J3
3 - HARDWARE DESCRIPTION
3.6 - Connections at the user terminal block
3.6.1 - General description
The contacts below are available at the user terminal block on
the NRCP2-BASE boards. Some contacts can only be used if
the unit operates in remote operating type (Remote).
EREBAACCESS EN - 4

3.6.2 - Volt-free contact on/off/cooling/heating
If the unit works in the remote operating mode (Remote) and the
automatic heating/cooling changeover function is not selected and
if the user conguration allows this (heat pump and Pro-Dialog in-
terface selection) the operation of the on/off contacts and the heat-
ing/cooling contacts is as follows:
Without multiplexing
Off On cooling On heating
On/off contact
Open Closed Closed
Heating/cooling contact - Open Closed
With multiplexing
Off On
cooling On heating On auto
On/off contact
Open Closed Closed Open
Heating/cooling contact Open Open Closed Closed
NOTE: The automatic changeover function (on auto) selects
the cooling or heating mode based on the outdoor tempera-
ture (see chapter 5.2).
3.6.3 - Volt-free setpoint selection contact
Cooling Heating
csp 1 csp 2 hsp 1 hsp 2
Set point selection contact
Open Closed Open Closed
3.6.4 - Volt-free demand limit selection contact
100% Limit 1 Limit 2 Limit 3
Demand limit 1
Open Closed Open Closed
Demand limit 2 Open Open Closed Closed
3 - HARDWARE DESCRIPTION
EN - 5 EREBA ACCESS

4.4 - Menu screen characteristics
\\MAINMENU Current path in the menu structure
GENUNIT PUMPSTAT Selection cursor to the left of the
first column
TEMP RUNTIME
PRESSURE MODES Menu list
SETPOINT LANGUAGE
INPUTS LOGOUT
OUTPUTS
General Parameters Menu Description of the menu framed by
the selection cursor
Each menu item denes the access to categorised data. The
Up and Down arrows position the cursor at the current item.
The Enter key activates the display of the selected sub-menu.
The item LOGOUT permits exiting from the menu screen and
protects access by a user password. The “Previous” key per-
mits exiting from the current screen without deactivating the
password-protected access.
4.5 - Data screen or configurable parameter
characteristics
The data screens display information parameters such as tem-
peratures or pressures. The conguration screens display unit
control parameters such as the water temperature setpoints.
\\MAINMENU\TEMP Current path in the menu structure
EWT 12.0°C List of items
LWT 7.0°C Cursor position
OAT 35.0°C
CHWSTEMP -17.8°C
SCT_A 57.0°C
Leaving Water Temperature Description of the item framed by
the selection cursor
The Up and Down arrow keys position the cursor on the current
menu item. The Enter key activates the parameter modication
(if possible). Any non-pertinent modication attempt is blocked
by a refusal screen.
4 - SETTING UP PRO-DIALOG+ CONTROL
4.1 - General features
The interface includes different screens that are listed below:
• Default screens with direct display of the main parameters,
• Menu screens for navigation,
• Data/conguration screens listing the parameters by type,
• Operating mode selection screen,
• Password entry screen,
• Parameter modication screen.
4.2 - Default screen characteristics
There are four default screens. Each screen shows:
• The unit status, its screen number,
• Three displayed parameters.
LOCAL OFF 1 On the left the unit status, on the right
the screen number
Entering water temp Description of the first parameter
EWT 17.2 °C Abbreviation and value with unit of
measurement of the first parameter
Leaving water temp Description of the second parameter
LWT 17.2 °C Abbreviation and value with unit of
measurement of the second parameter
Outside air temperature Description of the third parameter
OAT 21.7 °C Abbreviation and value with unit of
measurement of the third parameter
Pressing the Up or Down key changes one default screen to
another default screen. The screen number is updated.
4.3 - Password screens
Enter password Description of the password entry
screen
0_** Password value
(0 = basic access) Description
The password is entered digit by digit. The cursor is shown at the
current digit that ashes. The arrow keys modify the digit value.
The digit modication is validated with the Enter key and the cur-
sor is moved to the next digit.
Enter password
1_** The first digit is 1, the cursor is
positioned on the second digit
(0 = basic access)
Enter password
11_**
(0 = basic access)
Pressing the Enter key at a digit without value validates the
overall selection of the password. The screen is refreshed by
the menu list, and the items displayed depend on the level of
the activated password. The entry of an incorrect password
keeps the password entry screen.
Password selection 0 (zero) can simply be made by pressing
the Enter key twice in succession.
NOTE: If the interface is not used for a long period, it will go
black. The control is always active, the operating mode
remains unchanged. The interface screen is re-animated,
when the user presses a key. Pressing the key once illumi-
nates the screen, pressing the key a second time leads to a
screen that is related to the context and the key symbol.
EREBAACCESS EN - 6

4.7 - Operating mode screen
The unit is in Local Off mode, pressing the on/off (0/1) key once
activates the display of the operating mode screen.
Select Machine Mode Description of the screen
Local On List of the machine operating modes
Local Schedule Cursor
Network
Remote
TheUpandDownkeyspositionthecursoronthe selected operat-
ing mode. Four modes are immediately displayed on the screen.
To access operating modes that are not visible, please use the Up
and Down keys.
When the operating mode has been selected, the new operat-
ing mode can be validated with the Enter key.
Command accepted Operating mode validation screen
When the unit is in an operating mode and the On/off key is
pressed, the unit will stop. A conrmation screen protects the
unit against inadvertent shutdowns.
PRESS ENTER Machine shutdown confirmation
screen
TO CONFIRM STOP
4.6 - Parameter modification
A conguration parameter can be modied by positioning the
cursor and then pressing the Enter key.
\\MAINMENU\SETPOINT Current path in the menu structure
cps1 12.0°C List of items
cps2 14.0°C Cursor position
hps1 40.0°C
hps2 40.0°C
hramp_sp 27.4°C
Cooling Setpoint 2 Description of the item framed by
the selection cursor
The following screen allows modication of a parameter.
Modify value Screen description
csp 2
14.0 °C Current value
_ °C Cursor position
Cooling Setpoint 2 Item description
The Up and Down arrow keys permit the selection of the rst
digit. Pressing the Up key successively scrolls up to the following
symbols:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ., -.
The Down key follows the reverse order of the Up key in scroll-
ing down the digit list above. Each digit is validated with the
Enter key.
The - sign is only accessible for the rst selected character.
Modify value Description of the screen
csp 2
14.0 °C Current value
13.5_ °C New value before validation
Cooling Setpoint 2 Item description
The value is validated with the Enter key.At any time the return
key cancels the current modication.
ATTENTION: If the user exits from the current data screen, the
value is saved. A saving conrmation is displayed. The Enter
key validates the parameter modication(s). The Return to
the Previous Screen key cancels the current modication(s).
\\MAINMENUSETPOINT Current path in the menu structure
Save changes? Confirmation that the modification
is saved
4 - SETTING UP PRO-DIALOG+ CONTROL
EN - 7 EREBA ACCESS

4.8 - Menu tree structure
GENUNIT
TEMP
PRESSURE
SETPOINT
INPUTS
OUTPUTS
PUMPSTAT
RUNTIME
MODES
ALARMS
CONFIG
LOGOUT
ALARMRST CUR_ALRM
ALMHIST1 GENCONF
PUMPCONF
HCCONFIG
RESETCFG
USERCONF
SCHEDULE
HOLIDAY
BRODCAST
DATETIME
DISPLAY
HOLIDY01S
HOLIDY16S HOLIDY02S
…
OCC1P01S OCC1P02S
GENUNIT
TEMP
PRESSURE
SETPOINT*
INPUTS
OUTPUTS
PUMPSTAT
RUNTIME
MODES
ALARMS*
CONFIG
LOGOUT
ALARMRST CUR_ALRM
ALMHIST1 GENCONF
PUMPCONF
HCCONFIG
RESETCFG
USERCONF
SCHEDULE
HOLIDAY
BRODCAST
DATETIME
CTRL_ID
HOLIDY01S
HOLIDY16S HOLIDY02S
…
OCC1P01S
OCC1P02S
NAVIGATION
Password = "0"
ACCESS
ALL
USER
DEFAULT
SCREENS PASSWORD
General parameters
Temperatures
Pressures
Setpoint
Inputs
Outputs
Pump status
Operating time
Unit status
Alarms menu
Conguration menu
Disconnection
Reset of the alarms
Current alarm
Alarm history
Time schedule
Holidays
General conguration
Pump conguration
Heating/cooling
conguration
Setpoint reset
User conguration
Broadcast
Date and time
Identication control
SHUTDOWN
CONFIRMATION
SCREEN
LIST OF OPERATING
MODES
(for main
interface only)
Schedule 1
Schedule 2
Holidays 1
Holidays 2
Holidays 16
* Congurable from the GENCONF menu
4 - SETTING UP PRO-DIALOG+ CONTROL
EREBAACCESS EN - 8

4.9 - Detailed menu description
ATTENTION: Depending on the unit characteristics, certain menu items are not used.
4.9.1 - GENUNIT menu
NAME FORMAT UNIT DESCRIPTION
ctrl_typ 0/1/2 - Local = 0. Net. = 1. Remote = 2
STATUS Running/Off/Stopping/
Delay -Operating status
ALM Normal/Partial/Shutdown - Alarm status
min_left 0-15 min Start-up delay
HEATCOOL Heat/Cool/Standby/Both - Heating/cooling status
LOCAL_HC 0/1/2 - Heating/cooling selection via the main interface
HC_SEL 0/1/2 - Heating/cooling selection via the network
0 = cooling, 1 = heating, 2 = auto
LSP_SEL 0/1/2 - Setpoint selection via the main interface
SP_SEL 0/1/2 - Setpoint selection via the network
0 = Auto 1 = Spt1 2 = Spt2
SP_OCC Yes/No - Occupied setpoint active
CHIL_S_S Enable/Disable - Unit start/stop via the network
CHIL_OCC Yes/No - Unit time schedule via the network
CAP_T nnn % Total unit capacity
CAPA_T nnn % Capacity circuit A
CAPB_T nnn % Capacity circuit B
DEM_LIM nnn % Demand limit value
SP ±nnn.n °C Current setpoint
CTRL_PNT ±nnn.n °C Control point
EMSTOP Enable/Emstop - Network emergency stop
4.9.2 - TEMP menu
NAME FORMAT UNIT DESCRIPTION
EWT ±nnn.n °C Heat exchanger entering water temperature
LWT ±nnn.n °C Heat exchanger leaving water temperature
OAT ±nnn.n °C Outside air temperature
CHWSTEMP ±nnn.n °C Common master/slave temperature
SCT_A ±nnn.n °C Saturated condensing temperature A
SST_A ±nnn.n °C Saturated suction temperature A
SCT_B ±nnn.n °C Saturated condensing temperature B
SST_B ±nnn.n °C Saturated suction temperature B
DEFRT_A ±nnn.n °C Defrost temperature A
DEFRT_2 ±nnn.n °C Defrost temperature B or second coil
sgtc1 ±nnn.n °C Suction gas temperature, coil 1, unit with three compressors
sgtc2 ±nnn.n °C Suction gas temperature, coil 2, unit with three compressors
4.9.3 - PRESSURE menu
NAME FORMAT UNIT DESCRIPTION
DP_A ±nnn.n kPa Discharge pressure A
SP_A ±nnn.n kPa Suction pressure A
DP_B ±nnn.n kPa Discharge pressure B
SP_B ±nnn.n kPa Suction pressure B
4.9.4 - SETPOINT menu
NAME FORMAT VALUE UNIT DESCRIPTION
csp1 - 29.7 to 20 12.0 °C Cooling setpoint 1
csp2 - 29.7 to 20 12.0 °C Cooling setpoint 2
hsp1 20 to 55 40.0 °C Heating setpoint 1
hsp2 20 to 55 40.0 °C Heating setpoint 2
hramp_sp 0.1 to 1.1 0.60 ^C Ramp loading
cauto_sp 3.9 to 50 24.0 °C Cooling change-over setpoint
hauto_sp 0 to 46.1 18.0 °C Heating change-over setpoint
lim_sp1 0 to 100 100 % Limit setpoint 1
lim_sp2 0 to 100 100 % Limit setpoint 2
lim_sp3 0 to 100 100 % Limit setpoint 3
min_sct 26.7 to 55* 40 °C Condensing setpoint for desuperheater option
* 50, if the unit includes a variable-speed fan
4 - SETTING UP PRO-DIALOG+ CONTROL
EN - 9 EREBA ACCESS

4.9.5 - INPUTS menu
NAME FORMAT UNIT DESCRIPTION
ONOFF_SW Open/Close - Remote start/stop contact
HC_SW Open/Close - Remote heating/cooling contact
on_ctrl Off, On Cool, On Heat,
On Auto -Current control
SETP_SW Open/Close - Remote setpoint contact
LIM_SW1 Open/Close - Remote demand limit contact 1
LIM_SW2 Open/Close - Remote demand limit contact 2
FLOW_SW Open/Close - Water flow rate/customer safety loop contact
leak_1_v nn.n Volt Leak detector value 1
leak_2_v nn.n Volt Leak detector value 2
DSHTR_SW Open/Close - Desuperheater user contact
4.9.6 - OUTPUTS menu
NAME FORMAT UNIT DESCRIPTION
CP_A1 On/Off - Compressor output A1
CP_A2 On/Off - Compressor output A2
CP_A3 On/Off - Compressor output A3
fan_a1 0-2 -Fan output A1
fan_a2 0-2 - Fan output A2
exv_a 0-100 % EXV position circuit A
HD_POS_A 0-100 % Position variable fan speed controller A
RV_A On/Off - Four-way refrigerant valve
CP_B1 On/Off - Compressor output B1
CP_B2 On/Off - Compressor output B2
fan_b1 0-2 - Fan output B1
exv_a 0-100 % EXV position circuit B
HD_POS_B 0-100 % Position variable fan speed controller B
RV_B On/Off - Four-way refrigerant valve
C_HEATER On/Off - Heat exchanger and lower coil heater
BOILER On/Off - Boiler output
EHS_STEP 0-4 - Electric heater stages
ALARM On/Off - Alarm relay
RUNNING On/Off - Unit on relay
4.9.7 - PUMPSTAT menu
NAME FORMAT UNIT DESCRIPTION
CPUMP_1 On/Off - Command pump 1
CPUMP_2 On/Off - Command pump 2
ROT_PUMP Yes/No - Pump rotation
WATPRES1 ±nnn.n kPa Water pressure sensor 1
WATPRES2 ±nnn.n kPa Water pressure sensor 2
WP_CALIB Yes/No - Water pressure sensor calibration?
Following a water pressure sensor error, WP_OFFST is deconfigured (-99 kPa) to
inform of the need to calibrate the water loop. This calibration must be made while
there is no water flow in the machine
WP_OFFST ±nnn.n kPa Water pressure sensor calibration value
DP_FILTR nnn.n kPa Filter pressure drop
WP_MIN nnn.n kPa Minimum water pressure
WAT_FLOW ±nnn.n g/s Water flow rate
CAPPOWER ±nnn.n kW Unit capacity
w_dt_spt nn.n ^C Setpoint delta T
w_dp_spt nn.n kPa Setpoint delta P
drvp_pwr +nnn.n kW Pump capacity
drvp_i +nnn.n A Pump current
drvp_ver xxxxxxxx - Variable pump speed controller version
4 - SETTING UP PRO-DIALOG+ CONTROL
EREBAACCESS EN - 10

4.9.8 - RUNTIME menu
NAME FORMAT UNIT DESCRIPTION
HR_MACH nnnnn hours Unit operating hours
st_mach nnnnn - Number of start-ups, unit
HR_CP_A1 nnnnn hours Operating hours compressor A1
st_cp_a1 nnnnn - Number of start-ups compressor A1
HR_CP_A2 nnnnn hours Operating hours compressor A2
st_cp_a2 nnnnn - Number of start-ups compressor A2
HR_CP_A3 nnnnn hours Operating hours compressor A3
st_cp_a3 nnnnn - Number of start-ups compressor A3
HR_CP_B1 nnnnn hours Operating hours compressor B1
st_cp_b1 nnnnn - Number of start-ups compressor B1
HR_CP_B2 nnnnn hours Operating hours compressor B2
st_cp_b2 nnnnn - Number of start-ups compressor B2
hr_fana1 nnnnn hours Operating hours fan A1
hr_fana2 nnnnn hours Operating hours fan A2
hr_fanb1 nnnnn hours Operating hours fan B1
st_fa_a1 nnnnn - Number of start-ups fan A1
st_fa_a2 nnnnn - Number of start-ups fan A2
st_fa_b1 nnnnn - Number of start-ups fan B1
hr_cpum1 nnnnn hours Operating hours pump 1
hr_cpum2 nnnnn hours Operating hours pump 2
nb_def_a nnnnn - Number of defrost cycles circuit B
nb_def_b nnnnn - Number of defrost cycles circuit A
4.9.9 - MODES menu
NAME FORMAT UNIT DESCRIPTION
m_limit Yes/No - Demand limit active
m_ramp Yes/No - Ramp loading active
m_cooler Yes/No - Heat exchanger heater active
m_night Yes/No - Low-noise level night mode
m_SM Yes/No - Aquasmart active
m_leadla Yes/No - Master/slave active
m_auto Yes/No - Change-over active
m_heater Yes/No - Electric heater stages active
m_lo_ewt Yes/No - Lock heating mode and entering water too cold
m_boiler Yes/No - Boiler active
m_defr_a Yes/No - Defrost circuit A active
m_defr_b Yes/No - Defrost circuit B active
m_sst_a Yes/No - Low suction temperature circuit A
m_sst_b Yes/No - Low suction temperature circuit B
m_dgt_a Yes/No - High discharge gas temperature circuit A
m_dgt_b Yes/No - High discharge gas temperature circuit B
m_hp_a Yes/No - High pressure circuit A
m_hp_b Yes/No - High pressure circuit B
m_sh_a Yes/No - Low superheat circuit A
m_sh_b Yes/No - Low superheat circuit B
4 - SETTING UP PRO-DIALOG+ CONTROL
EN - 11 EREBA ACCESS

4.9.10 - ALARMS menu
NAME DESCRIPTION
ALARMRST Alarm reset
CUR_ALRM Current alarms
ALMHIST1 Alarm history
4.9.11 - CONFIG menu
NAME DESCRIPTION
GEN_CONF General configuration menu
PUMPCONF Water pump configuration menu
HC_CONFIG Heating/cooling configuration menu
RESETCFG Reset configuration menu
USERCONFIG User configuration menu
SCHEDULE Time schedule
HOLIDAY Holiday calendar
BRODCAST Broadcast menu
DATETIME Date and time menu
DISPLAY Display configuration menu
CTRL_ID Identification control
4.9.12 - ALARMRST menu
NAME FORMAT UNIT DESCRIPTION
RESET_AL Normal - Alarm reset
ALM Normal - Alarm status
alarm_1c nnnnn - Current alarm 1
alarm_2c nnnnn - Current alarm 2
alarm_3c nnnnn - Current alarm 3
alarm_4c nnnnn - Current alarm 4
alarm_5c nnnnn - Current alarm 5
alarm_1 nnnnn - Current JBus alarm 1
alarm_2 nnnnn - Current JBus alarm 2
alarm_3 nnnnn - Current JBus alarm 3
alarm_4 nnnnn - Current JBus alarm 4
alarm_5 nnnnn - Current JBus alarm 5
4.9.13 - CUR_ALRM menu
This menu lists up to ten active alarms. For each alarm the
display shows the time and date the alarm was generated as
well as the alarm description. Each screen shows one alarm.
…\ALARMS\CUR_ALM
HH:MM DD-MM-YY: alarm text
Alarm #1
4.9.14 - ALMHIST1 menu
This menu lists up to twenty alarms that have occurred at the
unit. For each alarm the display shows the time and date the
alarm was generated as well as the alarm description.
Each screen shows one alarm.
…\ALARMS\ALMHIST1
HH:MM DD-MM-YY: alarm text
Alarm #1
4 - SETTING UP PRO-DIALOG+ CONTROL
EREBAACCESS EN - 12

4.9.15 - SCHEDULE menu
NAME DESCRIPTION
OCC1P01S Unit on/off time schedule
OCC1P02S Unit setpoint selection time schedule
4.9.16 - HOLIDAY menu
NAME DESCRIPTION
HOLDY_01 Holiday period 1
HOLDY_02 Holiday period 2
HOLDY_03 Holiday period 3
HOLDY_04 Holiday period 4
HOLDY_05 Holiday period 5
HOLDY_06 Holiday period 6
HOLDY_07 Holiday period 7
HOLDY_08 Holiday period 8
HOLDY_09 Holiday period 9
HOLDY_10 Holiday period 10
HOLDY_11 Holiday period 11
HOLDY_12 Holiday period 12
HOLDY_13 Holiday period 13
HOLDY_14 Holiday period 14
HOLDY_15 Holiday period 15
HOLDY_16 Holiday period 16
4.9.17 - BRODCAST menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
ccnbroad 0/1/2 2 - Activates the broadcast
0 = deactivated, 1= broadast during holidays at the network,
2 = broadcast during holidays, machine only
oatbusnm 0 to 239 0 - Broadcast of the outside temperature
Bus number of the machine with the outside temperature
oatlocad 0 to 239 0 - Element number of the machine with the outside temperature
dayl_sel Disable/Enable Disable - Activation summer time, winter time
Summer time
startmon 1 to 12 3 - Month
startdow 1 to 7 7 - Day of the week (1 = Monday)
startwom 1 to 5 5 - Week of the month
Winter time
stopmon 1 to 12 10 - Month
stoptdow 1 to 7 7 - Day of the week (1 = Monday)
stopwom 1 to 5 5 - Week of the month
4.9.18 - GENCONF menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
lead_cir 0/1/2 0 - Circuit loading sequence
0 = auto, 1 = A first, 2 = B first
seq_typ No/Yes No - Loading sequence by circuit
ramp_sel No/Yes No - Ramp loading sequence
off_on_d 1 to 15 1 min Start-up delay
nh_limit 0 to 100 100 % Capacity limitation in night mode
nh_start 00:00 to 24:00 00:00 - Night mode start hour
nh_end 00:00 to 24:00 00:00 - Night mode stop hour
bas_menu 0 to 3 0 - Basic menu configuration
0 = total access
1 = access to the alarm menu by password
2 = access to the setpoint menu by password
3 = combination of 1 and 2
synoptic No/Yes No - Synoptic diagram displayed
4.9.19 - PUMPCONF menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
pump_seq 0/1/2/3/4 0 - Heat exchanger pump sequence
0 = no pump
1 = one pump
2 = two pumps auto
3 = pump 1 manual
4 = pump 2 manual
pump_del 24 to 3000 48 hours Rotation time between pumps
pump_per No/Yes No - Pump seizure protection
pump_sby No/Yes No - Pump shutdown when the unit is in standby
pump_loc No/Yes Yes - Flow rate verification when the pump has shut down
4 - SETTING UP PRO-DIALOG+ CONTROL
EN - 13 EREBA ACCESS

4.9.20 - HCCONFIG menu
NOM FORMAT DEFAULT UNIT DESCRIPTION
auto_sel No/Yes No - Automatic change-over selection
cr_sel 0 to 2 0 - Cooling reset selection
hr_sel 0 to 2 0 - Heating reset selection
1 = outside temp., 0 = none, 2 = delta T
heat_th -20 to 0 -15 °C Outside temperature threshold cooling mode
boil_th -15 to 15 -10 °C Outside temperature threshold for the boiler
ehs_th -5 to 21.2 5 °C Outside temperature threshold for electric heater stages
both_sel No/Yes No - Heating or cooling command selection for HSM
ehs_back No/Yes No - 1 backup electric heater stage
ehs_pull 0 to 60 0 minutes Delay before start-up of the first electric heater stage
ehs_defr No/Yes No - Quick electric heat stages for defrost
4.9.21 - RESETCFG menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
COOLING RESET
oatcr_no -10 to 51.7 -10 °C Outside temperature for no reset
oatcr_fu -10 to 51.7 -10 °C Outside temperature for maximum reset
dt_cr_no 0 to 13.9 0 ^C Delta T for no reset
dt_cr_fu 0 to 13.9 0 ^C Delta T for maximum reset
cr_deg -16.7 to 16.7 0 ^C Cooling reset value
HEATING RESET
oathr_no -10 to 51.7 -10 °C Outside temperature for no reset
oathr_fu -10 to 51.7 -10 °C Outside temperature for maximum reset
dt_hr_no 0 to 13.9 0 ^C Delta T for no reset
dt_hr_fu 0 to 13.9 0 ^C Delta T for maximum reset
hr_deg -16.7 to 16.7 0 ^C Heating reset value
4.9.22 - USERCONF menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
language 0 to 4 0 - Language selection
English = 0, Spanish = 1, French = 2, Portuguese = 3, Italian = 4,
Translation = 5
use_pass 1 to 9999 11 - User password
4.9.23 - DATETIME menu
NAME FORMAT DEFAULT UNIT DESCRIPTION
hour 0 to 24 hours Hour
minutes 0 to 59 minutes Minutes
dow 1 to 7 Day of the week
tom_hol No/Yes No - Holiday tomorrow?
tod_hol No/Yes No - Holiday today
dlig_off No/Yes - Winter time change-over active?
dlig_on No/Yes - Summer time change-over active?
d_of_m 1 to 31 Day of the month
month 1 to 12 Month
year 0 to 99 Year
4.9.24 - Menu CTRL_ID
NAME FORMAT DEFAULT UNIT DESCRIPTION
elemt_nb 1 to 239 1 - Element number
bus_nb 0 to 239 0 - Bus number
baudrate 9600 to 38400 9600 - Communication speed
PRO-DIALOG+ Description
CSA-SR-20H430NN
-Software version Serial number
4 - SETTING UP PRO-DIALOG+ CONTROL
EREBAACCESS EN - 14

4.9.25 - OCC1PSX menu
The control provides two timer programs:
schedule 1 and schedule 2 that can be activated.
The rst timer program (schedule 1) provides a means to auto-
matically switch the unit from an occupied mode to an unoccupied
mode: the unit is started during occupied periods.
The second timer program (schedule 2) provides a means to au-
tomatically switch the active setpoint from an occupied setpoint
to an unoccupied setpoint: cooling setpoint 1 is used during oc-
cupied periods, cooling or heating setpoint 2 during unoccupied
periods.
Each schedule consists of eight time periods set by the opera-
tor. These time periods can be agged to be in effect or not in
effect on each day of the week plus a holiday period. The day
begins at 00.00 hours and ends at 23.59 hours.
Program is in unoccupied mode unless a schedule time period
is in effect. If two periods overlap and are both active on the
same day, the occupied mode takes priority over the unoccu-
pied period.
Each of the eight periods can be displayed and changed with
the aid of a sub-sub-menu. The table on page 17 shows how
to access the period conguration. Method is the same for the
time schedule 1 or the time schedule 2.
Time schedule type:
23
22
21
P6P3
2
0
P3
19
P3
1
8
P3P2P2
17
P4P4P3P2P2
1
6
P4P4P3P2P2
1
5
P4P4P3P2P2
14
P4P4P3P2P2
1
3
P4P4P3P2P2
12
P5P4P4P3P2P2
11
P5P4P4P3P2P2
10
P5P4P4P3P2P2
9
P5P4P4P3P2P2
8
P5P4P4P3P2P2
7
6
5
4
3
P1
2
P1
1
P1
0
HOLSUNSATFRITHUWESTUEMON
Time
MON: Monday
TUE: Tuesday
WED: Wednesday
THU: Thursday
FRI: Friday
SAT: Saturday
SUN: Sunday
HOL: Holiday
Occupied
Unoccupied
Starts at Stops at Active on
P1: period 1, 0h00, 3h00, Monday
P2: period 2, 7h00, 18h00, Monday + Tuesday
P3: period 3, 7h00, 21h00, Wednesday
P4: period 4, 7h00, 17h00, Thursday + Friday
P5: period 5, 7h00, 12h00, Saturday
P6: period 6, 20h00, 21h00, Holidays
P7: period 7, Not used in this example
P8: period 8, Not used in this example
NAME FORMAT DEFAULT UNIT DESCRIPTION
OVR_EXT 0-4 0 hours Occupied schedule override
DOW1 0/1 11111111 - Period 1 day of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD1 0:00-24:00 00:00 - Occupied from
UNOCTOD1 0:00-24:00 24:00:00 - Occupied until
DOW2 0/1 0 - Period 2 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD2 0:00-24:00 00:00 - Occupied from
UNOCTOD2 0:00-24:00 00:00 - Occupied until
DOW3 0/1 0 - Period 3 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD3 0:00-24:00 00:00 - Occupied from
UNOCTOD3 0:00-24:00 00:00 - Occupied until
DOW4 0/1 0 - Period 4 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD4 0:00-24:00 00:00 - Occupied from
UNOCTOD4 0:00-24:00 00:00 - Occupied until
DOW5 0/1 0 - Period 5 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD5 0:00-24:00 00:00 - Occupied from
UNOCTOD5 0:00-24:00 00:00 - Occupied until
DOW6 0/1 0 - Period 6 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD6 0:00-24:00 00:00 - Occupied from
UNOCTOD6 0:00-24:00 00:00 - Occupied until
DOW7 0/1 0 - Period 7 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD7 0:00-24:00 00:00 - Occupied from
UNOCTOD7 0:00-24:00 00:00 - Occupied until
DOW8 0/1 0 - Period 8 days of the week MTWTFSSH
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday
OCCTOD8 0:00-24:00 00:00 - Occupied from
UNOCTOD8 0:00-24:00 00:00 - Occupied until
4 - SETTING UP PRO-DIALOG+ CONTROL
EN - 15 EREBA ACCESS

4.9.26 - HOLIDY0XS menu
This function is used to dene 16 public holiday periods. Each
period is dened with the aid of three parameters: the month,
starting day and duration of the public holiday period. During
these public holidays the controller will be in occupied or unoc-
cupied mode, depending on the programmed periods validated
for public holidays.
Each of these public holiday periods can be displayed and
changed with the aid of a sub-menu.
ATTENTION: The broadcast function must be activated to
utilise the holiday schedule, even if the unit is running in
stand-alone mode (not connected to Network).
NAME FORMAT DEFAULT UNIT DESCRIPTION
HOL_MON 0-12 0 - Holiday month
HOL_DAY 0-31 0 - Holiday day
HOL_LEN 0-99 0 - Holiday duration
4 - SETTING UP PRO-DIALOG+ CONTROL
EREBAACCESS EN - 16

5.1 - Start/stop control
The table below summarises the unit control type and stop or
go status with regard to the following parameters.
• Operating type: this is selected using the start/stop button
on the front of the user interface.
LOFF: local off, L-C: local on, L-SC: local schedule, REM:
remote, Net.: network, MAST: Master
• Remote start/stop contacts: these contacts are used
when the unit is in remote operating type (Remote). See
sections 3.6.2 and 3.6.3.
• CHIL_S_S: this network command relates to the unit
start/stop when the unit is in network mode.
• Command set to Stop: the unit is halted.
• Command set to Start: the unit runs in accordance with
schedule 1.
• Start/Stop schedule: occupied or unoccupied status of
the unit as determined by the chiller start/stop program
(Schedule 1).
• Master control type. This parameter is used when the unit
is the master unit in a two chiller lead/lag arrangement.
The master control type determines whether the unit is to
be controlled locally, remotely or through Network (this
parameter is a Service conguration).
• Network emergency shutdown: if this network command
is activated, it shuts the unit down whatever the active
operating type.
• General alarm: the unit is totally stopped due to failure.
5.2 - Heating/cooling/standby operation
5.2.1 - General
The heating / cooling / standby selection applies to all units. But
only liquid chillers, controlling a boiler can change over to heating
mode. Heating/cooling control can be automatic or manual.
In automatic mode the outdoor temperature determines the
heating/cooling/standby changeover based on the two threshold
values congured by the user (see RESETCFG menu for cooling
and heating mode changeover thresholds).
If the unit is in standby it does not cool or heat, and no com-
pressor can be activated. The diagram below summarises the
operating principle in automatic mode.
HEATING STANDBY COOLING
Outdoor
temperature
Heating
threshold*
Cooling
threshold
* This threshold does not apply to cooling only units that do not control a
boiler.
ACTIVE OPERATING TYPE STATUS OF PARAMETERS CONTROL
TYPE UNIT MODE
LOFF L-ON L-SC rEM Net. MASt CHIL_S_S REMOTE
START/
STOP
CONTACT
MASTER
CONTROL
TYPE
START/STOP
SCHEDULE
MODE
NETWORK
EMERGENCY
SHUTDOWN
GENERAL
ALARM
- - - - - - - - - - Enable - - Off
- - - - - - - - - - - Yes - Off
Active - - - - - - - - - - - Local Off
- - Active - - - - - - Unoccupied - - Local Off
- - - Active - - - Off - - - - Remote Off
- - - Active - - - - - Unoccupied - - Remote Off
- - - - Active - Disable - - - - - Network Off
- - - - Active - - - - Unoccupied - - Network Off
- - - - - Active - - Local Unoccupied - - Local Off
- - - - - Active - Off Remote - - - Remote Off
- - - - - Active - - Remote Unoccupied - - Remote Off
- - - - - Active Disable - Network - - - Network Off
- - - - - Active - - Network Unoccupied - - Network Off
- Active - - - - - - - - Disable No Local On
- - Active - - - - - - Occupied Disable No Local On
- - - Active - - - On cooling - Occupied Disable No Remote On
- - - Active - - - On heating - Occupied Disable No Remote On
- - - Active - - - On auto - Occupied Disable No Remote On
- - - - Active - Enable - - Occupied Disable No Network On
- - - - - Active - - Local Occupied Disable No Local On
- - - - - Active - On cooling Remote Occupied Disable No Remote On
- - - - - Active - On heating Remote Occupied Disable No Remote On
- - - - - Active - On auto Remote Occupied Disable No Remote On
- - - - - Active Enable - Network Occupied Disable No Network On
5 - PRO-DIALOG+ CONTROL OPERATION
EN - 17 EREBA ACCESS

5.3 - Heat exchanger water pump control
The unit can control one or two heat exchanger water pumps.
The pump is turned on when this option is congured (see
PUMPCONFIG) and when the unit is in one of the on modes
described above or in delay mode. Since the minimum value for
the delay at start-up is 1 minute (congurable between 1 and 15
minutes), the pump will run for at least one minute before the rst
compressor starts.
The pump is kept running for 20 seconds after the unit goes to
stop mode.The pump keepsworking when the unitswitches from
heating to cooling mode or vice-versa. It is turned off if the unit is
shut down due to an alarm unless the fault is a frost protection
error. The pump can be started in particular operating conditions
when the heat exchanger heater is active (see chapter 5.5). See
chapter 5.14 for the particular heat exchanger pump control for
the follower unit (master/slave assembly).
If two pumps are controlled and the reversing function has been
selected (see PUMPCONF conguration), the control tries to limit
the pump run time delta to the congured pump change-over
delay. If this delay has elapsed, the pump reversing function is
activated, when the unit is running. During the reversing function
both pumps run together for two seconds. If the pumps are of the
variable ow rate type pump reversal will take place at the next
machine start-up.
If a pump has failed and a secondary pump is available, the unit
is stopped and started again with this pump.
The control provides a means to automatically start the pump
each day at 14.00 hours for 2 seconds when the unit is off. If the
unit is tted with two pumps, the rst pump is started on odd
days and the second pump is started on even days. Starting the
pump periodically for a few seconds increases the life-time of
the pump bearings and the tightness of the pump seal.
5.4 - Control interlock contact
This contact checks the status of a loop (water ow switch and
customer safety loop, see chapter 3.6). It prevents the unit from
starting if it is open when the delay at start-up has expired. This
open contact leads to an alarm shut-down, if the unit is running.
5.5 - Heat exchanger frost protection
The heater for the heat exchanger and the water pump (for units
with a pump) can be energised to protect the heat exchanger,
if it may be damaged by frost, when the unit is shut down for a
long time at low outdoor temperature.
NOTE: Heat exchanger heater control parameters can be
modied, using the Service conguration.
5.2.2 - Heating/cooling/auto selection
The table below summarises the unit heating/cooling opera-
tion, based on the following parameters:
• Control type: indicates whether the unit operates in local,
remote or Network mode. See section 5.1.
• Unit on/off status: indicates whether the unit is shut down
(not authorised to start) or in operation (or authorised to
start).
• Heating/cooling/auto selection in local mode: operating
mode selected via the user interface. See GENUNIT menu.
• Remote heating/cooling contacts: these contacts are only
active if the unit is under remote control.
• HC_SEL: this network command permits heating/cooling/
auto control, if the unit is in Network operating mode.
• Outside temperature: determines the operation, if the unit
is in automatic heating/cooling/standby changeover mode.
PARAMETER STATUS
ON/OFF
STATUS CONTROL TYPE HEATING/COOLING SELECTION IN LOCAL MODE REMOTE HEATING/ COOLING CONTACTS HC_ SEL OUTDOOR TEMPERATURE OPERATING MODE
Off - - - - - Cooling
On Local Cooling - - - Cooling
On Local Heating - - - Heating
On Local Auto - - > Cooling threshold Cooling
On Local Auto - - < Heating threshold Heating*
On Local Auto - - Between cooling and heating thresholds Standby
On Remote - Cooling mode - - Cooling
On Remote - Heating mode - - Heating
On Remote - Auto mode -> Cooling threshold Cooling
On Remote - Auto mode -< Heating threshold Heating*
On Remote - Auto mode -Between cooling and heating thresholds Standby
On Network - - Cooling - Cooling
On Network - - Heating - Heating
On Network - - Auto > Cooling threshold Cooling
On Network - - Auto < Heating threshold Heating*
On Network - - Auto Between cooling and heating thresholds Standby
* Does not apply to cooling only units that do not control a boiler.
5 - PRO-DIALOG+ CONTROL OPERATION
EREBAACCESS EN - 18