Vertiv Liebert XD Series, System Design Manual

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4.8 Connecting Low-Voltage Wiring—Liebert XDH Smart Modules
Low-voltage connections are available only on the Liebert XD smart module. The low-voltage connections
for Liebert XDH smart modules are in the rear of the modules. There are two connection locations, one for
the lower bank of fans and one for the upper bank of fans. The power connections are shown in Figure 4.9
below; the communication ports are on the rear left side of the Liebert XDH.
These dry contacts can to be connected to a monitoring unit, such as Liebert SiteScan
®
. Make
connections on these modules according to site-specific drawings. The module must be installed in
accordance with national and local wiring regulations.
Terminal block connections 37, 38 and 82 through 87 can be connected to a monitoring unit, such as
Liebert SiteScan. The remote shutdown, condensate detection alarm, and fan failure alarms operate
independently of each other.
• Contacts 37 and 38 are for remote shutdown.
• Contacts terminals 82, 83 and 84 are activated by the condensate detection alarm.
• T82 is used for normally open contact closure requirements.
• T83 is common.
• T84 is used when normally closed contact closure is required.
• Contacts terminals 85, 86 and 87 are activated by the fan failure alarm.
• T85 is for normally open contact closure requirements.
• T86 is common.
• T87 is used when normally closed contact closure is required. The condensate detection
alarm and the fan failure alarm operate independently of each other.
• P66 and P67 are CAN bus ports.
Figure 4.9 Low-voltage connections—Liebert XDH smart module
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