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Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual
|
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6.5.1
Startup Procedure
To start the UPS from a fully powered-down condition:
1.
Log in as Operator, Administrator or Service.
2.
Ensure that the Liebert
®
power module assembly ready switches are latched (in Down position).
3.
Close the external input circuit breaker and connect input power. The touchscreen activates.
4.
The rectifier goes through its startup sequence and the bypass static switch is activated.
5.
Close the external output circuit breaker.
6.
Touch the OPERATE tab
7.
Touch the
Inverter On
button. When asked to confirm, touch
On
again.
The power module run lights 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 power module run lights will be solid green.
8.
Close the battery breaker.
6.5.2
Startup in Eco Mode
Eco Mode is available only on a single-module Liebert
®
EXM.
1.
Log in as Operator, Administrator or Service.
2.
Touch the OPERATE tab.
3.
Touch Energy Saving Mode Activation
Setup
.
4.
In the drop-down menu, touch
Enable
.
5.
Touch
Save
.
The UPS should now be operating in Load on Bypass Mode with the inverter on standby. The status bar at the
top of the screen will say ENERGY SAVING MODE ACTIVE.
6.5.3
Switching Between UPS Operation Modes
To switch from Load on Inverter Mode to Load on Bypass Mode:
1.
Log in as Operator, Administrator or Service.
2.
Touch the OPERATE tab.
3.
Touch
Inverter Off
button to switch to Load on Bypass Mode.
4.
To continue, confirm turning Off the inverter when prompted.
NOTICE
Risk of power loss to connected load. Can cause damage to equipment.
The load equipment is not protected from supply aberrations, such as spikes, sags and failures, when the Liebert
®
EXM is
operating in Load on Bypass Mode.
To Switch From Load on Bypass Mode to Load on Inverter Mode:
1.
Log in as Operator, Administrator or Service.
2.
Touch the OPERATE tab.
3.
Touch
Inverter On
button.
To continue, confirm turning On the inverter when prompted.
6.6
Switching the UPS from Normal Operation to Maintenance Bypass
Follow the procedure below to transfer the load from the UPS inverter output to the Maintenance Bypass system.
NOTICE
Risk of loss of power to the connected load.
Can cause equipment damage.
This procedure must be performed by properly trained and qualified personnel who are knowledgeable about the
operation of this system. Failure to follow these instructions will result in loss of power and possible damage to critical
equipment.
Summary of Contents for Liebert EXM
Page 1: ...Liebert EXM UPS User Manual 20kVA to 100kVA 208 120V 50 60Hz...
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