Cold location controller for conventional plants, up to 4 control circuits (evaporator)
CRC-XP_V2.92_PI_2019-03_EN 3
Subject to technical modifications
CRC-XP
Software revision and validity of documentation
Any software versions not listed are special solutions for individual projects and are not described in detail in this
document. This document automatically ceases to be valid if a new technical description is issued.
Manufacturer: Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
You can find more information on our website at www.wurm.de
.
1.3 Circuit diagram
Fig. 2: Circuit diagram
1.4 Installing and connecting
The module is designed for top-hat rail installation. The housing is a standard size and is also suitable
for installation in fuse boxes or distribution switch boxes. Modules can be positioned side by side with-
out gaps.
DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant before installing. Otherwise, mains voltage and/or exter-
nal voltage may still be present, even if the control voltage is switched off. Always remove both
power plugs (L and N).
• Only qualified electricians are permitted to wire the device.
• Take note of the maximum loads on all connections.
.
Software version
V2.92 - 2019-03 Documentation status
CRC - XP
-
+
12
13
14
15 16
17
18
11
22
23
24
25 26
27
28 29
21
RxD
TxD
38
37 36 35 34 33 32 31
39
5
4
3
21
12
13
14
15 16
17
18
11
22
23
24
25 26
27
28 29
21
RxD
TxD
38
37 36 35 34 33 32 31
39
5
4
3
21
0V
L
H
n.c.
L
K1
K2
K3
K4
n.c.
F1
F2
F3
F4
N
E1
E2
E3
E4
GND
Sync.
setpoint 3
differential 3
act. value 4
differential 4
operating mode
/ version
setpoint 4
act. value 1
setpoint 1
differential 1
setpoint 2
differential 2
alarm priority
address
menu
act. value 2
act. value 3
Service
LEDs
C-BUS
230V~
50/60Hz
C-BUS interface
Output relays
Temperature sensors Digital
inputs
Defrost
sync.
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