Huawei NetCol5000-A050 User Manual page 42

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual (1350 mm Depth)
(10) Active power PE
(13) Outdoor unit power PE
(16) Drive switch QF3
(19) Electric heater contactor
KM4
Figure 2-11 Extra-low voltage (ELV)
(1) Main control module
(4) PSU 1
Table 2-2 Signal cable terminal block
Appearance
Issue 04 (2022-12-15)
Pin
1
2
3
4
5
Copyright © Huawei Digital Power Technologies Co., Ltd.
(11) Standby power switch
QF2
(14) Reserved
(17) Crankcase heater fuse
FU3
(2) Filler panel
(5) PSU 2
X301
Outdoor unit on/off
control (OUTD-DO+)
Outdoor unit on/off
control (OUTD-DO–)
Smoke sensor (12 V
DC-SR)
Smoke sensor
(SMOKE)
Remote startup/
shutdown (DI-Z+)
2 Product Description
(12) Standby power PE
(15) PSU switch QF16
(18) Crankcase heating relay
K1
(3) Signal cable terminal
blocks
X302
Outdoor unit RS485
communication
(RS485-SW+)
Outdoor unit RS485
communication
(RS485-SW–)
Outdoor unit RS485
communication
(GND-ISO)
Common alarm (DO-
Z1+)
Common alarm (DO-
Z1–)
32