Huawei NetCol5000-A-035 - Page 75

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
3 Installation Guide
Issue 13 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
66
Before connecting signal cables to an outdoor unit, take effective ESD protection measures.
Ports
Figure 3-41 shows the zoomed-in view of the control terminal XT2 ports, including ports for
reporting common alarms 1 and 2, port for the outdoor unit on/off signal cable, port for the
remote shutdown of an indoor unit, water sensor port, smoke sensor port, and port for
reporting mains outage alarm.
Figure 3-41 Zoomed-in view of the control terminal XT2 ports
For the actual terminal layout, refer to the site layout. This figure is for reference only.
Table 3-15 describes the definitions and functions of control ports.
Table 3-15 Definitions and functions of control ports
Port
Name
Definit
ion
Function
Port Feature
X2.1,
X2.2
Port for
reportin
g
commo
n alarm
1
Alarm dry contact output.
When DO associated alarm is
set to Critical ALM, the smart
cooling product issues an
alarm if a major alarm occurs.
NO signal dry contact output.
Connection to an outdoor device is
forbidden.
X2.3,
X2.4
Port for
reportin
g
commo
n alarm
2
Alarm dry contact output.
When DO associated alarm is
set to Smoke only, the smart
cooling product issues an
alarm if a smoke or water
alarm occurs.
Alarm dry contact output.
When DO associated alarm is
set to Critical ALM, the smart
cooling product issues an
alarm if a critical alarm occurs.
NO signal dry contact output.
Connection to an outdoor device is
forbidden.