Huawei NetCol8000-E220 User Manual page 71

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Context
Figure 3-39 Signal terminals
Table 3-11 Signal table
No.
1
2
3
4
5
6
7
8
Issue 06 (2020-08-19)
X501
Smoke sensor power
supply +
Smoke sensor feedback -
Port for remote startup
and shutdown+
Port for remote startup
and shutdown–
Port 1+ for reporting
common alarms
Port 1– for reporting
common alarms
Port 2+ for reporting
common alarms
Port 2– for reporting
common alarms
Copyright © Huawei Technologies Co., Ltd.
X502
Water leakage detection
(water leakage in the
floor)
Water leakage detection
(water leakage in the
floor)
N/A
N/A
N/A
N/A
N/A
N/A
3 Installation Guide
X503
RS485+
(Differential
pressure
sensor)
RS485–
(Differential
pressure
sensor)
GND
12 V+
N/A
N/A
N/A
N/A
62