Parallel Operations-Determine Control Panel Firmware Version; Parallel Operations-Software Version 1.1; De-Energize A Liebert Exm Parallel System-Software Version 1.1; Re-Energize A Liebert Exm Parallel System-Software Version 1.1 - Vertiv Liebert EXM User Manual

6.7 P O
ARALLEL PERATIONS
Parallel operation differs depending on the software in the control menu. To determine which
version is installed on the UPS, activate the touchscreen menu, touch the Context Menu and
touch About.
If the firmware is V1. 1 , perform the appropriate steps in 6.8 - Parallel Operations—Software
Version 1.1.
If the firmware is V1.0, perform the appropriate steps in 6.9 - Parallel Operations—Software Version 1.0
6.8 P O
ARALLEL PERATIONS
6.8.1 De-Energize a Liebert EXM Parallel System—Software Version 1.1
To shut down a UPS parallel system using V1. 1 controller software:
1. Log in as Operator, Administrator or Service.
2. Verify that the system and the connected load are prepared for shutdown.
3. Touch the OPERATE tab
4. Touch the Inverter Off radio button. A pop-up window states that the system is operating in a multi-module system and asks
whether to control one inverter or the entire system.
5. Touch System.
The power module run lights will start flashing yellow while the unit goes through the inverter shutdown sequence. After a few
seconds, the inverter will turn Off, the static bypass will close and the power module run lights will be Off. All UPS units in the
system will go to bypass
6. Check the parallel switchgear.
NOTICE
Risk of loss of power to the connected load. Can cause equipment damage.
The following procedure will remove power from the critical bus. Before beginning these steps, shut down the connected
load or transfer the connected load to an input power supply not dependent on the Liebert EXM system that is being
de-energized.
a. If the parallel switchgear is a matching Vertiv cabinet, open the Maintenance Isolation Circuit Breaker (MIB).
b. Open all Module Output Breakers (MOB).
7. Open the input breaker for each UPS and the breaker feeding the Maintenance Bypass Breaker (MBB) in the parallel switch
gear.
The system is now de-energized, and its output power supply is Off.
6.8.2 Re-Energize a Liebert EXM Parallel System—Software Version 1.1
To restart Liebert EXM parallel system from a fully powered-down condition using V1. 1 controller software:
1. Log in as Operator, Administrator or Service.
2. Close the input breakers for all UPS's
3. The LCD on each UPS will turn On, the LCD icons will begin flashing green and the rectifier will start.
The bypass and output icons will illuminate green.
The battery LED will illuminate red.
4. Close the Module Output Breakers (MOB) circuit breaker to each UPS.
5. Close the MIB circuit breaker.
WARNING
!
Risk of electric shock. Can cause equipment damage, injury and death.
The following procedure will supply power to the critical bus. Before beginning, notify all personnel that
input power is being supplied to the circuits. Verify that the connected load is prepared for input current.
6. Touch the OPERATE tab
7. Touch the Inverter On radio button. A pop-up window states that the system is operating in a multi-module system and asks
whether to start one inverter or the entire system.
8. Touch System.
The LCD icons will start flashing green while the unit goes through the inverter startup sequence. After about a minute, the
inverter will turn On, the static bypass will open and the icons will be solid green.
9. Close all battery breakers.
Vertiv | Liebert
® ™
EXM
—D
ETERMINE
—S V
OFTWARE
10-40kVA, 50/60Hz User Manual
C P F
ONTROL ANEL IRMWARE
1.1
ERSION
Operation
V
ERSION
Context Menu
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