Huawei NetCol5000-A - Electric Control Box Layout Description

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
A Electric Control Box Layout
Issue 01 (2017-07-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
245
Table A-1 Electric control box layout description
No.
Name and Function
A
Side
view
of the
electri
c
control
box
(1) Dual
power
switch
contactor
KM1
a
(2) Dual
power
switch
contactor
KM2
a
(3) Crankcase
heater relay
(4) Electric heater contactor
KM4
(5) Fuse
holder
(6) SPD
(7) AC
contactor
KM3
a
-
B
Signal
cable
termin
al
block
X301
(1)
Outdoor unit
control
Outdoor unit control dry
contact
(2)
Outdoor unit control dry
contact
(3)
Smoke sensor
Smoke sensor power supply (12
V DC)
(4)
Smoke sensor feedback
(5)
Port for
remote startup
and shutdown
Port for remote startup and
shutdown+
(6)
Port for remote startup and
shutdown-
(7)
Water
immersion
Water leakage detection-
contact 1 (water leakage in the
floor)+
(8)
Water leakage detection-
contact 1 (water leakage in the
floor)-
X302
(1)
Outdoor unit
RS485 control
RS485-SW+
(2)
RS485-SW-
(3)
GND-ISO
(4)
Dry contact
alarm 1
Dry contact alarm 1
(5)
Dry contact alarm 1
(6)
Dry contact
alarm 2
Dry contact alarm 2
(7)
Dry contact alarm 2
(8)
Reserved
-
X303
(1)
Differential
pressure
transmitter
(DPT)
DPT 12 V DC
(2)
DPT GND
(3)
DPT 0–5 V feedback