WURM CRD-XP User manual

CRD-XP
Universal cold location controller
for installation in commercial refrigerators or cabinet doors
CRD-XP_2005-12_EN Subject to technical changes Page 1 of 16
Front view
Features
Suitable for all cold location types
(cold rooms and commercial refrigerators etc.)
Forced air, electric, hot or cold gas defrosting
Synchronised defrost of several cold location controllers
Defrosting over fixed times or cyclical interval
Thermostatic fan control
Run-up, run-down function of the fan controller
Surge guard and runtime monitoring
2. Setpoint and independent day / night changeover
Sharp frost function
3-Point control
High voltage range of mains power supply
High electromagnetic compatibility
Fast installation thanks to innovative and elegant fitted housing
Large data storage for temperature history

CRD-XP
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Table of Contents
Page
1 Connection diagrams 2
2 Operation 3
3 Description of parameters 4
4 Control 8
5 Fan control 10
6 Defrosting 11
7 Error messages 13
8 Service connection 13
9 Installation 14
10 Accessories 15
11 Technical data 15
12 Software revisions and validity of documentation 16
1 Connection diagrams
Photo showing cables connecting CRD-XP to transformer
1
2
3
4
5 10 17 88 6 11 18 99
7
12 19
CRD
-XP
CRD-XP
230
VAC
230
VAC
F1
F2
defrost
sync.
Bus L Bus H
0V
Power
In1
In2
Bus
Connection terminals on CRD-XP
The wiring diagram applies to devices of Version 2.0 and higher.
Caution: On Version 1.0 and 1.1 devices, the cooling and fan output relays
have been designed to act as openers.

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2 Operation
Display
1 Set value adjustment enabled
2 Advanced level P00...P73
Defrost
Cool
Fan
Status LED Value/parameter number
Selecting parameters
1. Press the <P> key to display the parameter number.
The parameter number will appear in the display for as long as the key is depressed.
2. To select individual parameters with the <P> key depressed, press the ▲or ▼key.
When the key is released, the value corresponding to the parameter appears.
P P P P
Parameter levels: Standard level and advanced level
The setting menu is divided into two distinct function areas, the standard level and the advanced level.
The standard level comprises parameters P00 to P09. In this area, all standard actual values can be
displayed and the basic set value for the controller can be set. Parameter P09 can trigger a manual
defrost if required.
The advanced level comprises both parameters P00 to P09 and also parameters P10 to P70. In this
area, all control, defrost, fan, compressor and probe parameters can be displayed and set.
Within a level, you can toggle between the parameters with one single operating function.
Enabling the advanced level
1. To switch to the advanced level, press the <P> key for 5 seconds.
The LED "Advanced level" will flash for as long as the level is enabled.
P
...
P
...
5 secs.
2. To return to the advanced level, press the <P> key again for 5 seconds.
If no key is pressed within 2 minutes, the display automatically returns to the standard level. The
return is always to the temperature display which is defined by parameter P60.
P
1
2

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Adjusting set values
1. Select the parameter to be adjusted (having previously enabled the advanced level if necessary).
2. Set value adjustment enabled.
Press all three keys down simultaneously for 5 seconds. The "Set value adjustment enabled" LED
flashes.
3. Change the values using the ▲or ▼keys to change values.
P P P P
5 Sek.
When changing the parameters, it is not necessary to re-enable access to make further set value
adjustments.
Actual values are only displayed, they cannot be adjusted even if the "Set value adjustment
enabled" LED is flashing.
4. To disable set value adjustment, press all three keys simultaneously again for 5 seconds.
If no key is pressed within 2 minutes, the display automatically returns to the standard level and
set value adjustment is disabled. The return is always to the temperature display which is defined
by parameter P60.
Set address
Fundamentally, one can proceed as described above to set the device address to Parameter P64. But
additionally, there is the possibility of changing directly to Parameter P64 with the help of the service
button arrayed behind the front plate. For this, the service button must be briefly actuated 3 times. The
advanced level is automatically released.
Service button
8
8:88
3 Description of parameters
Standard level: Actual values and set values
No. Parameter Plant Min. Max. Description
P00 Control actual value -50°C +70°C Current actual value of temperature control
Temperature of control probe F1
P01 Current control set
value
-50°C +70°C Display of the actual set value of the control in consideration
of shift P13 and sharp set value P14
P02 Set value 7°C -50°C +70°C Input of basic set value for the control
(Setting range is defined with P11 and P12 advanced level)
P03 Actual value
Reg/Control probe F1
-50°C +65°C Temperature of control probe F1
P04 Actual value
Limit probe F2
-50°C +65°C Temperature of defrost limit probe F2
P05 Not used
P06 Defrost time min. Duration of last defrost
P07 Melting time min. Duration of last melting phase
P08 Operating time % Operating time during last 60 minutes
P09 Manual defrost OFF On Manual start and stop of a defrost => Chapter 6
Manual defrost must be enabled via parameter P65!

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Advanced level: Control
No. Parameter Plant Min. Max. Description
P10 Hysteresis 2K 1K 20K Switching differential, symmetrical around set value P02
P11 Upper set value 10°C -50°C +70°C Input of upper adjustment limit
for set value in standard level P02
P12 Lower set value 0°C -50°C +70°C Input of lower adjustment limit
for set value in standard level P02
P13 Set value shift 0K -20K +20K Shift of set value
(lowering or raising) via day/night signal
P14 Shock/ 2nd setpoint -10°C -50°C +70°C Setpoint for sharp frost function P52
Advanced level: Defrost control
No. Parameter Plant Min. Max. Description
P15 Defrost type Air Air HGon Air: Circulation air defrost EL: Electrical defrost
HG: Hot gas defrost CG: Cold gas defrost
HGon: Hot gas defrosting with switched-on solenoid valve
P16 Time hh:mm hh:mm Hh:mm Time on device
Control unit works with Gateway system time!
P17 Master / Slave ON OFF ON ON: MASTER OFF: SLAVE
In SLAVE mode, the defrost times are inactive. Defrosts are
started only via the synchronous line.
P18 Defrost time 1 06:00 --:-- 23:59 Start time for 1st defrost
If no defrost time is to be programmed,
the time must be set to "--:--".
P19 Defrost time 2 20:00 --:-- 23:59 Start time for 2nd defrost
P20 Defrost time 3 --:-- --:-- 23:59 Start time for 3rd defrost
P21 Defrost time 4 --:-- --:-- 23:59 Start time for 4th defrost
P22 Defrost time 5 --:-- --:-- 23:59 Start time for 5th defrost
P23 Defrost time 6 --:-- --:-- 23:59 Start time for 6th defrost
P24 Defrost limit
temperature
8°C 0°C 30°C Electro, hot gas and cold gas defrosting:
Defrosting is ended when the limit temperature
is reached.
At a setting of 30°C, temperature limiting is inactive!
P25 Defrost (safety) time 45 mins 10 mins 180min Defrosting is always ended
when the safety time is reached.
P26 Draining time 0min 0min 9min Defrosting can be ended by waiting before switching the
cooler back on after the defrost heater has been switched off.
Even after the defrost safety time has lapsed on electric, hot
gas or cold gas defrosting, the set draining time always
lapses first.
P27 Time between 2
defrosts
15h 0h 170h Setting cyclical defrosts if the timer is faulty (timer will not
synchronise or set after a restart)
Advanced level: Fan control
No. Parameter Plant Min. Max. Description
P28 Fan control 0 0 2 0: Continuous operation 1: timed 2: themostatic
P29 Fan set value
for thermostatic
fan control
-15°C -50°C +50°C Independent set value for thermostatic fan control.
This is an expanded function for use in cold room control
applications. Optimum setting ensures less ice formation on
the evaporator.
Benefits:
1. Fewer defrosts.
2. Ensures that no warm air can penetrate
the cold room following a defrost.
Risks:
1. The fan may switch on too late when cooling is requested,
if the limit probe is placed in an unfavourable position.
The evaporator floods because the cooling output is not
conveyed into the atmosphere.
2. Incorrect fan set values and hysteresis can result in cyclical
or continuous fan operation. The settings depend largely on
the operating point of the cold generation unit.
P30 Fan hysteresis 1K 1K 10K Independent control hysteresis for thermostatic fan control.
P31 Fan behaviour during
defrost
1 0 1 0: off 1: continuous operation => Chapter 5
Fan behaviour, see sequence diagram
P32 Fan delay 0mins 0mins 10 mins Dwell time following defrost => Chapter 5
Fan behaviour, see sequence diagram

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No. Parameter Plant Min. Max. Description
P33 Fan runup time 0mins 0mins 10 mins Run-up time of fan prior to cooling command => Chapter 5
Fan behaviour, see sequence diagram
P34 Fan rundown time 0mins 0mins 10 mins Rundown time of fan following cooling command => Chapter 5
Fan behaviour, see sequence diagram
P35 Not used
P36 Not used
P37 Not used
Advanced level: Compressor parameters
No. Parameter Plant Min. Max. Description
P38 Minimum
dwell time
0mins 0mins 20mins Minimum dwell time of the compressor control (surge
protection).
If the actual controller value increases to above the switch-
on threshold before the minimum dwell time is reached, the
compressor remains switched off until this period has
lapsed.
P39 Minimum
operating time
0mins 0mins 20mins Minimum operating time of the compressor control (surge
protection).
If the actual controller value falls to below the switch-off
threshold before the minimum dwell time is reached, the
compressor remains switched on until this period has
lapsed.
P40 Maximum operating
time
720min 10 mins 999mins Maximum operating time of the compressor.
The operating time of the compressor is monitored. If the
“maximum operating time“ is exceeded, it is switched off for
the dwell time preset on P41.
P41 Defined dwell time 0mins 0mins 120mins Defined dwell time after the maximum operating time is
exceeded (see maximum operating time P40)
P42 Switch-on time 5mins 2mins 120mins Operating time for safety mode if malfunction occurs.
If the control probe (e.g. probe break) fails, an emergency
program is initiated. The cooling command is controlled with
the adjustable switch-on and switch-off period (see dwell
time P43).
P43 Dwell time 5mins 2mins 120mins Switch-off period for safety mode if malfunction occurs.
(See switch-on period P42)
Advanced level: Alarms
No. Parameter Plant Min. Max. Description
P44 Alarm delay 60mins 0mins 120mins Period from onset of malfunction until error message is
generated
P45 Alarm delay following
defrost
90mins 0mins 180mins Alarm delay following defrost.
The temperature monitoring function is inactive following
defrost. P45 defines the delay time following a defrost.
The alarm delay becomes effect even if a set value has
been changed. This may be the case, for example through
a shift or sharp operation.
P46 Alarm priority 1 0 (off) 3 Priority for the differentiated message by remote data
transmission or central module expansion
P47 Over-temperature
alarm
4K 0K 70K Temperature threshold for over-temperature alarm.
The temperature of the control probe is monitored for both
over and under temperatures (P48). The respective values
are the deviation and/or differential to the control set value
P01 (set value + any set value shift).
P48 Under-temperature
alarm
4K 0K 70K Temperature threshold for under-temperature alarm.
(See over-temperature alarm)
P49 Fan / alarm relay Lu Lu ALnc Function selection for the fan relay
Lu Fan relay
ALno Alarm relay NO, Alarm = contact closed
ALnc Alarm relay NO, Alarm = contact open (V.2.1)
(NO normally open, NC normally closed)

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Advanced level: Digital inputs
No. Parameter Plant Min. Max. Description
P50 Digital
input 1
3 0 3 0: direct alarm
Zero current principle, direct alarm
on loss of current at the input
1: delayed alarm
Zero current principle, delayed alarm
on loss of current at the input
setting of delay time with P44
2: external defrost trigger
start of defrost either by button
or an external defrost timer
3: Cold location off
Control, temperature monitoring and probe monitoring
inactive, alarms are suppressed,
communication remains active, no messages via remote
data transmission
P51 Status
input 1
OFF OFF ON Voltage status at digital input 1
(independent of selected function)
P52 Digital
input 2
0 0 2 0: Door contact
When the cold room is entered, fan and
evaporator solenoid switch off for a maximum of 15 mins.
Alarm after alarm delay
1: Day signal
Signals day operation,
set value shift for night operation
2: Shock freeze
The desired sharp freezing temperature is preset via P14. It
is controlled on the sharp setpoint. After the function is
ended and the sharp temperature is reached, forced
defrosting is performed; only when this is completed does
the device return to normal operation. During sharp
freezing, defrosting is not started.
3: Cooler off
Control, temperature monitoring and probe monitoring
inactive, alarms are suppressed,
communication remains active, no messages via remote
data transmission
4: 2nd setpoint
Control to the 2nd setpoint The 2nd setpoint is preset via
P14 (sharp set value).
P53 Status
input 2
OFF OFF ON Voltage status at digital input 2
(independent of selected function)
Advanced level: Probe parameters
No. Parameter Plant Min. Max. Description
P54 Operating mode 1 1 2 1: Control with one probe F1
2: No control
3: Weighted control with probes F1 and F2
4: Heating/cooling with one probe F1
P55 Not used
P56 Not used
P57 Adjustment to
Reg/Control probe F1
0K -10K +10K Calibration for control probe F1
Depending on probe arrangement, an adjust may be
necessary. Reading and adjustment value amount to the
actual probe value.
P58 Adjustment to
limit probe F2
0K -10K +10K Calibration for limit probe F2
(See P57)
P59 Not used
Advanced level: Display
No. Parameter Plant Min. Max. Description
P60 Displayed temperature P00 P00 P03 Standard display without operation
P61 Display resolution 0.1K 0.1K 1K Alternatively, resolution of display 0, 1K or 1K.

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Advanced level: Temperature register
No. Parameter Plant Min. Max. Description
P62 Register cycle 15mins 1min 15mins 1: 1min grid, register depth approx. 0.5 days
Do not use for continuous operation!
5: 5min time slot pattern, memory depth approx. 2.5 days
10: 10min time slot pattern, memory depth approx. 5 days
15: 15min time slot pattern, memory depth approx. 7.3 days
P63 Not used
Advanced level: General
No. Parameter Plant Min. Max. Description
P64 Address 0 0 120 CAN bus address of the controller (0= no data traffic, alarm
via bus system (P71) possible)
P65 Manual defrost ON OFF ON Manual defrost permitted with parameter P09.
P66 Relay test 0 0 3 Test of all output relays
0: off 1: cooling relay 2: fan relay 3: Defrost relay
All relays off
On exiting the menu or if no further keys are pressed within 2
minutes, the relay test is automatically deactivated.
P67 Day,Month dd.mm Current date
P68 Year yyyy Current year
P69 Probe type 277 277 2015 Selection of temperature probe type for all probes
277: TRK277PLUS 2015: T2015
From Version 2.30
P70 Cooler on/off ON OFF ON Switches the control and alarm on/off
P71 Bus alarm OFF OFF ON Uses the bus system as a central alarm system via separate
module ALC-XP
(only possible for address 0, see P64)
P72 HACCP ON OFF ON Switches on/off consideration in the HACCP summary in
Frigodata-XP
P73 Version Device version used
Operating instructions
Fan relay Reason / remedy
Set value level cannot be
enabled
Keys P, ▲or ▼were pressed for less than 5 seconds or a key
was released in between
Cannot switch to advanced level Key Pwas not pressed for at least 5 seconds
Parameter number cannot be
changed
Key Pwas not held down when keys ▲or ▼were pressed
Parameter cannot be changed Access is not enabled
Parameter is not a set value
Key Ppressed simultaneously with key ▲or ▼
Parameter numbers greater than
P09 cannot be selected
The advanced level has not been selected
Manual defrost cannot be
triggered or terminated
P65 is set to OFF
Manual defrost triggering is disabled.
The defrost conditions are not met. (see chapter 6)
4 Control
Normal operation with 1 probe
In normal control operation, F1 is used to measure the regulating actual value. F2 serves as defrosting
limit probe. If the actual value exceeds the current setpoint by half the hysterisis amount, the cooling
relay is switched on. If the regulating actual value falls below the current setpoint by half the hysterisis
amount, the cooling relay is switched off again. To reduce the switching frequency of possible
compressors, you can enter a minimum run and standstill time (ÆP38/P39).

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No active temperature control
When the controller is used as a pure defrosting slave, the control can be switched to inactive. In this
operation mode, dashes represent the regulating actual value in the display. The control probe F1 is
not monitored. The defrosting synchronised by the master is terminated via the limit probe F2.
Recording of the measured temperatures and statuses in the history or in the historical storage
remains active.
Weighted control with 2 probes
Both probes F1 and F2 are used for control in the "Weighted control" operation mode. F1 measures
the supply air temperature, whereas F2 determines the return air temperature. The true regulating
actual value is calculated through a weighting of both probes. The weighting is set with 50% return air
in day operation and 60% return air in night operation. The supply air probe F1 is used as a limit probe
for defrosting. If one of the two probes malfunctions, the still-intact probe is used for control.
3-point control, heating/cooling
The defrosting output is used for the heating
operation. The cooling operation is active when the
actual value exceeds the setpoint by half the
hysteresis amount. When the setpoint is reached,
cooling is switched off again. Heating begins when
the regulating actual value falls below the setpoint
by half the hysteresis amount. It ends when the
setpoint is reached.
Initiation of defrosting is possible in this operation mode as well. If defrosting is not desired, the times
must be explicitly deleted. With forced air defrosting, there is no triggering of the defrosting output
(heat register). With electrical defrosting, the heating/defrosting output becomes active. F2 serves
here as a limit probe.
Sharp frost function
Input 2 can be configured via parameter P54 to trigger the sharp frost function. The desired sharp
freezing temperature is preset via P14. After input 2 is activated, the system is cooled down to the
sharp setpoint. There it plays no role whether the input is set only briefly or remains activated. If input
2 is still active when the sharp frost temperature is reached, controlling remains at the sharp frost
temperature. After the input is opened, the system is cooled again below the sharp frost setpoint and,
immediately after this, forced defrosting is initiated. If, in contrast, input 2 is only briefly set (at least 2
s) and then reopened, the device conducts forced defrosting immediately after falling below the sharp
temperature for the first time.
+
-Cooling
Tactual
Heating
Setpoint
Tset
Tset ½
Hysteresis
Tset ½
Hysteresis

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5 Fan control – Cooling operation and defrosting
The parameters P28 and P31 can influence ventilator behaviour. P28 is used to set controls in normal
operation, P31 during defrosting.
Continuous operation (P28 = 0)
If parameter P31 is set to "1", the ventilator is triggered without interruption. At position "0", the
ventilator is switched off during defrosting. It is switched on again after any draining (P26) and
ventilator delay time (P32).
Timed ventilator control (P28 =1)
With this ventilator control, the ventilator output is timed with the cooling command, taking into account
the parameters P33 and P34. The ventilator starts in advance of cooling by the time set in P33 and
continues to run after cooling is switched off for the time set in P34.
If the ventilator should be switched off during defrosting, parameter P31 must be set to "0". The
ventilator starts again after defrosting and after the ventilator delay time P32.
Thermostatic ventilator control (P28 = 2)
The ventilator is only switched on when the regulating actual value falls below the temperature set in
parameter P29 minus half the hysterisis (from P30). The ventilator is switched off when the regulating
actual value lies above the temperature set in P29 plus half the hysterisis.
Fan controller Fan beahaviour during defrost T Draining Time Application examples
P28 P31 P33 P26 P34 P33 P34
Cool T Deep-freese cabinet
Defrost Electric/hot gas/cold gas defrost
OFF Fan
Island / Shelf / Counter
Cool T Circulation air/electric/hot gas/cold gas defrost
Defrost Standard cooling cabinet
ON Fan Circulation air defrost
Timed Cool T Room
Defrost Electric/hot gas/cold gas defrost
OFF Fan
Cool T Room
Defrost Circulation air defrost
ON Fan
Thermostatic Cool T Room
Defrost Electro/hot gas/cold gas defrost
OFF Fan
Cool T Room
Defrost Circulation air defrost
ON Fan
Continuous
operation
V Run-up time prior to cooling N Rundown time following cooling
P33 P34 P32 LV Fan delay
V Run-up time prior to cooling N Rundown time following cooling V Run-up time prior to cooling
VNV
N Rundown time following cooling
LV
LV
VNV N
VNN
VN

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6 Defrosting
Display during active defrost
During a defrost, the text "dEFr" (defrost) is
shown in place of the temperature value in the
standard level.
The text remains in the display in cold
locations with set values of > -15°C to
20 minutes and in cold locations with set
values of < -15°C to 30 minutes following the
end of defrost and draining time.
Triggering a manual defrost
1. Select parameter P09 "Manual defrost".
2. Enable set value adjustment.
3. Press the ▲key. Manual defrost starts.
P P
P
If several cold location controllers are connected via defrost synchronisation, the defrost operation is
triggered for all.
Terminating a defrost
1. Select parameter P09 "Manual defrost".
2. Enable set value adjustment.
3. Press the ▼key. The controller defrost operation is terminated.
P
P
P
If several cold location controllers are connected via defrost synchronisation, the defrost operation
must be terminated for all, before the controllers switch back to cooling mode.
Timer-controlled defrost
Time-controlled defrost is only possible on operation in the BUS system. The time is transferred from
the Gateway to the controller.
6 defrost times are available, which can be set separately (P18 – P23). For these times to be effective,
the device must be programmed as MASTER via parameter P17 ("ON").
The required defrost times are deactivated by setting to '--:--'.
Synchronised defrost
To synchronise the defrosting of several controllers, they can be connected via terminals 8 and 9. A
maximum of 4 controllers can be coupled to each other.
Each device sends a signal to the terminals for the duration of its own defrost. If the Slave controller
detects that the Master controller is defrosting, it will start a defrost under the relevant conditions.
P

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To prevent other devices triggering their own time-controlled defrost, the second device should be
programmed as the SLAVE via parameter P17 ("OFF"). On the other hand, additional times are
possible through the operation as additional master.
On completion of the individual defrost operations triggered by limit probe or time, all synchronised
devices wait until all thermometers have received their synchronous signal from the bus before
starting cooling. This means that the start of cooling as well as the start of defrosting is synchronised.
Cyclical defrost
If the defrost interval should be longer than 1 day, cyclical defrosting can be activated. The cycle time
in hours is set via parameter P27. It is effective when no individual defrost times are programmed or
the controller has been configured as slave.
If the controller does not request a cyclical defrost, the cycle time P27 must be set to "0".
Suppressing defrosts
Electric, hot gas or cold gas defrosts are not triggered if:
the limit probe temperature is higher than the set limit temperature
the limit probe is +5K warmer than the regulator set value and
the regulator actual value has exceeded the over-temperature threshold.
The limit probe malfunctions
Hot gas defrosts with solenoid valve switching
Hot gas defrosting with switched-on solenoid valve is available as an additional defrost type (display:
HGon ). After defrosting starts, the cooler solenoid valve is also switched on with a 1 minute delay.
An additional external linking of the solenoid valve with hot gas generation is thus not needed.

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7 Error messages
In the event of malfunction, the display flashes with the error code. Depiction of the error code is
suppressed in the advanced level (point in lower right flashes).
Display Cause of malfunction Monitoring function and emergency program
F1 Short-circuit or incoming air
probe interrupted
Cooling command with defined operating time
(Parameters P42, P43)
F2 Short-circuit or limit probe
interrupted
With electric, hot gas or cold gas defrosting and a
defect in the limit probe, defrosting does not take place.
EE
Data error in non-volatile
memory
A power surge may destroy the set values. Operation
takes place with default settings.
Re-enter all memory locations!
Isolate thermostat!
COLL Address collision on the bus The set address is already assigned.
Set a different address for the device !
buS Bus error
No bus
Check bus connection or set address to 0 (P64)
door Cold room door open too long Close cold room door!
AL Alarm digital Input 1 Zero current principle,
alarm on loss of current at the input 1
dAL Delayed alarm via input 1 Apply voltage to input 1,
rectify external fault
Uhr Timer has invalid time on
address > 0
Restore bus connection to the gateway or enter time
(P16) and set address to 0 (P64)
-6
T flashing
Over or under-temperature
alarm of regulator actual value
Thermostat is too warm or too cold.
Check setting of over-temperature threshold P47 or
under-temperature threshold P48.
8 Service connection
For service and commissioning purposes, a laptop can be connected
directly to the cold location controller. The required connection
sockets for the communication bus are located to the left behind the
front plate. The CAN-PC901 – converter must be used for
communication with the computer.
A “service button” is located above the connection socket.
(Æchapter 2)

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9 Installation
28
150 x 32
0,6 ... 3,5
61
72
120
158
120
Installation dimensions for CRD-XP cold location controller
75
62
12
33
65
Installation dimensions for transformer TR9-9-4 (WZU001)

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10 Accessories
CRD-XP Cooler controller
TR9-9-4 (WZU001) Transformer
ZCB-C/TR-0.6 Connection cable 0.6m CRD-XP to TR9-9-4
ZCB-C/TR-2.6 (WZU112,VBK9) Connection cable 2.0m CRD-XP to TR9-9-4
TRK277/7 plus Temperature probe 7m connection cable
11 Technical data
CRD-XP cold location controller
Supply voltage 2 x 9V~ via transformer TR9-9-4
with plug connection
Power draw approx. 4VA
Digital inputs 2 x zero-potential multi-function inputs
Temperature probe 2 x TRK277plus
Output relay 1x ventilator/alarm – closer contact, 230V~ 4(2)A
1x cooling – closer contact , 230V~ 4(2)A
1x defrost – closer contact , 230~ 4(2)A
Communication 3-wire CAN-BUS interface
Service connection CAN bus interface for laptop
Housing Plastic housing
Dimensions (WxHxD) 158 x 32 x 75 mm³
Mounting See installation instructions
Permitted temperature range 0...45°C
Weight approx. 150 g
EC Conformity declaration As defined by EC Directive on Electromagnetic Compatibility
89/336/EEC
TR-9-9-4 - Transformer
Primary voltage 230V~, +10%/-20%
Power draw approx. 4VA
Fusing Max. 6A
Secondary voltage 2 x 9V~ for CRD-XP
with plug connection
Primary side connection 2 x AMP connection, 6.3mm
Housing Cast plastic housing
Dimensions (WxHxD) 75 x 65 x 60 mm³, excluding cable
Mounting See installation instructions
Ambient temperature 0...45°C (operation)
Weight Approx. 350 g
EC Conformity declaration As defined by EC Directive on Electromagnetic Compatibility
89/336/EEC

CRD-XP
Page 16 of 16 Subject to technical changes CRD-XP_2005-12_EN
12 Software revisions and validity of documentation
Software version Functional enhancement Page
V1.1 11-2002
Documentation basis
First delivered software version
V2.0 03-2003 New hardware; all relay contacts are designed as closer contacts 2
Temperature range expanded to +70°C 4 V2.1 10-2003
Function types of the fan relay expanded (parameter P49) 6,10
Simplified address setting through jump to the corresponding
parameter P64 with threefold pressing of the service button
4
Switching off of the cooler at the unit (parameter P70) 8
Flexible use of the 2nd digital input (parameter P52) 7
Control for independent 2nd setpoint (parameter P52) 7
New operation mode "Operation mode 3-point control, heating /
cooling" 9
New operation mode "Weighted control" 9
Expanded function of sharp freeze 9
Expansion of the range of alarm thresholds (parameter P47, P48) 6
New defrost type "Hot gas with solenoid valve control" 12
Use of the CAN-bus as a central alarm system with alarm module
ALC-XP (parameter P71)
8
Improved HACCP function (parameter P72) 8
V2.30 12-2005
Expansion of the range of intervals of cyclic defrost to 170 hours
(parameter P27)
5,12
All software versions that are not listed are special solutions for individual projects and are not
documented in this description in detail.
The general technical guidelines must be observed!
This document will automatically become invalid when superseded by a new technical description of
the device.