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