Vertiv™ | Liebert® SRC-G | User Manual 40
Electrical Installation
Table 3-5 Indoor Unit Feed Terminal
Model L1:IN L2:IN L3:IN L1: ODU L2: ODU L3: ODU
FAN
FEED 1
FAN
FEED 2
FAN
FEED 3
SRC03GES Y NA NA Y NA NA Y NA NA
SRC07GES Y NA NA Y NA NA Y Y NA
SRC07GET Y Y Y Y Y Y Y Y NA
SRC11GET Y Y Y Y Y Y Y Y Y
• Fire/smoke alarm feed
These pins are provided for connecting inputs from fire and smoke alarm sensor. In case of ‘On alarm’, AC unit
status sets to OFF mode.
• Customer feed
These pins are used to record any customer alert signals and then it can be displayed on LCD screen.
• Remote On/O
The remote On/O terminal can be used to remotely control the unit ON/OFF status and to stop the unit
operation upon special moment. If the inputs of remote On/O terminals are shorted and the AC unit power
supply is switched On, then AC unit outputs are normal.
If the terminal is open, the AC unit will stop giving outputs. The terminals have been shorted before delivery.
If the control cables need to be connected at site, remove the short cables and connect the outer controller to
the remote On/O terminals respectively.
• The customer terminal (control terminal) can connect with any alarm signal except for the AC system.
• Any outer alarm signal with NO dry contact can be connected with customer terminal. After the outer alarm
signal is connected, user should set the corresponding customer alarm information in microprocessor
controller.
• If no alarm signal is connected, the input state of the customer terminal is the same as that of setting. If an
outer alarm is generated, the input state is dierent from the setting.
• The AC system will generate an audible alarm and LCD screen on microprocessor controller will display
the corresponding alarm information. If a computer using Vertiv host monitoring software is connected, the
alarm will be displayed on it too.
• Common alarms
The common alarm relay, connected with the terminal block, has a set of Normally Open (NO) dry contact, and
it can also be set to (Normally Closed) NC through software. When a major alarm is generated, the contact is
closed. This can be used to send a remote alarm, sending signals to the Building Management System (BMS) or
dialing the paging system automatically.
• Communication
LAN connection is provided on terminal block for communicating with RDU unit.
Multiple Vertiv™ Liebert® SRC-G can simultaneously monitor multiple units through the Vertiv RDU-A/SIC
monitoring.