Before connecting signal cables to an outdoor unit, take eective 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/o 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 gure is for reference only.
Table 3-15 describes the denitions and functions of control ports.
Table 3-15 Denitions and functions of control ports
Port
Nam
e
Denition Function Port Feature
X2.1,
X2.2
Port for
reporting
common
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.
NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width) 3 Installation Guide
Issue 17 (2020-10-22) Copyright © Huawei Technologies Co., Ltd. 70
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