Rittal Liquid Cooling Package
85
16 Further technical information
EN
X3 pin assignment:
1
GND
2
GND
3
GND
4
+24V
5
Condensate pump output
6
Addressing input I
2
C
X4 pin assignment:
1
Temperature sensor, water inlet
2
Temperature sensor, water return
3
GND flow sensor
4
TxD flow sensor
5
GND optional flow meter
6
Output from flow meter
7
GND leakage sensor
8
+5 V leakage sensor
9
GND condensate sensor
10
+5 V condensate sensor
11
GND control valve
12
Input 0-10 V control valve
13
Temperature sensor, water inlet
14
Temperature sensor, water return
15
RxD flow sensor
16
+5 V flow sensor
17
Output from flow meter
18
+24 V flow meter
19
Heating function, leakage sensor
20
Optosensor, leakage sensor
21
Heating function, condensate sensor
22
Optosensor, condensate sensor
23
Output 0-10 V control valve
24
+24 V supply, control valve
16.4.3 Hardware for startup current limitation
Fig. 93:
Startup current limitation – rear/top view
Key
1
Terminals for infeed AC (X5) – 5-pole
2
Socket for fan 1, 2 (X1) – 8-pole
3
Socket for fan 3, 4 (X2) – 8-pole
4
Socket for fan 5, 6 (X3) – 8-pole
5
Earthing (3x)
X5 pin assignment:
1
Phase conductor L1 (1~ L1)
2
Phase conductor L2 (1~ L1')
3
Phase conductor L3 (1~ L1")
4
Neutral conductor N
5
PE conductor
The fans are supplied with voltage in pairs via sockets
X1 (fans 1 and 2), X2 (fans 3 and 4) and X3 (fans 5 and
6). Startup current limitation is achieved via delayed
activation of the fans when the power returns.
Assignment of X1 / X2 / X3:
1
PE Fan
2
PE
3
PE
4
PE Fan
5
Neutral conductor fan
6
Phase fan
7
Neutral conductor fan
8
Phase fan
16.5 Water circulation diagram
Fig. 94:
Water circulation diagram
Key
1
Temperature sensor, inlet
2
Flow sensor, inlet
3
Control valve, inlet
4
Heat exchanger
5
Non-return valve, return
6
Temperature sensor, return
5
5
4
3
2
1
2
4
1
3
5
Note:
Fan positions 2 and 5 are not present in the
LCP Inline flush.
1
2
3
4
5
6