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

Vertiv™ Liebert® EXM User Manual
7.10 Parallel Operations—Determine Control Panel Firmware
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

7.11 Parallel Operations - Software Version 1.1

7.11.1 De-Energize a Vertiv™ 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 button. A pop-up window opens and 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 UPS system that is being de
energized.
a. If the parallel switchgear is a matching Vertiv cabinet, open the MIB.
b. Open all the MOB.
7. Open the input breaker for each UPS and the breaker feeding the MBB in the parallel switch gear.
The system is now de-energized, and its output power supply is off.

7.11.2 Re-Energize a EXM Parallel System Software Version 1.1

To restart 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 UPSs.
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 MOB circuit breaker to each UPS.
5. Close the MIB circuit breaker.
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Parallel Operations - Software Version 1.1
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