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

6.10 Parallel Operations—Determine Control Panel Firmware
Version
Parallel operation differs depending on the firmware 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 6.11 - Parallel
Operations—Control Panel Firmware Version 1.1.
If the firmware is V1.0, perform the appropriate steps in 6.12 - Parallel Operations—Control
Panel Firmware Version 1.0
6.11 Parallel Operations—Control Panel Firmware Version 1.1
6.11.1 De-Energize a Liebert® EXM™ Parallel System—Control Panel Firmware Version 1.1
To shut down a UPS parallel system using V1.1 controller firmware:
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
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.
| Liebert® EXM
Vertiv
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50-250kVA, 480V, 60Hz User Manual |
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cabinet, open the Maintenance Isolation Circuit
Context Menu
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