Liebert 610 manual UPS System

The UPS output is not synchronized to the bypass power source, the static bypass switch is

Static Switch

disconnected, or it has failed internally. Emergency and overload transfer to the bypass

D, S

source is not available. If the module has a manual Static Switch Disconnect, set it to ON

Unable

(closed). If the module does not have a manual disconnect switch, open and re-close the

static switch fuseholder. If the alarm conditions are automatically corrected, reset the alarm

to clear it. Contact Liebert Global Services if the alarm stays on.

Bypass Not

The bypass power source voltage is not within specifications. Correct the bypass AC power

Available

source.

Bypass Phase

The power conductors on the bypass line are not wired to the UPS in the required

sequence. This alarm should appear only during initial start-up or after a repair to the source

Sequence

D, L, S

power system. Disconnect power from the bypass line and correct the wiring. Liebert Global

Wrong

Services must be present during initial start-up of your UPS System.

UPS SYSTEM

Input Current

D, E

At least one input phase differs from the average current by 10% or more for four (4) hours.

Contact Liebert Global Services. If the condition persists, transfer the load to the bypass

Unbalanced

line.

Control Power

The logic control power supply from the UPS output is not operating properly. The UPS

D, L, S

module continues operating but will shut down if the input power fails. Contact Liebert

Fail

Global Services immediately.

Output Over/

Output frequency differs from the nominal (60 Hz) by more than 0.5 Hz. No transfer or

Underfre-

D, L, S

shutdown occurs. Contact Liebert Global Services at once.

quency

The UPS module output voltage is under the minimum permitted (-12%) deviation from

Output

D, F, L, S

nominal. The load automatically transfers to the bypass line. If the alarm condition is no

Undervoltage

longer present, reset the alarm and retransfer the load from bypass to UPS. Contact Liebert

Global Services if alarm persists.

The UPS module output voltage is above the maximum permitted (+10%) deviation from

Output

D, F, L, S

nominal. The load automatically transfers to the bypass line. The UPS module is shut down

Overvoltage

and isolated. Contact Liebert Global Services at once. Do not attempt to reset circuit

breakers.

The UPS output current exceeds the rated system load current. This condition causes an

Overload

D, R, S

alarm only, the UPS does not shut down. Determine cause of the overload. Reduce the load

until the overload condition is corrected. Reset the UPS alarm.

The load on the UPS has exceeded the current versus time window of system overload

Overload

D, F, L, S

capacity. The UPS system transfers the load to bypass. Reduce the load. If the system does

Transfer

not initiate an automatic load retransfer, manually retransfer the critical load from the bypass

line to the UPS. Reset the alarm.

Excessive reverse power flow from the critical bus into the UPS inverter has occurred,

Reverse

D, F, L, S

probably because of low inverter output voltage or a phase mismatch. The UPS module is

Power

shut down and isolated. Contact Liebert Global Services immediately. Do not attempt to

reset circuit breakers.

Rectifier Fuse

D, F, S

At least one of these fuses has opened. The UPS automatically transfers the critical load to

Blown

the bypass line. Circuit breakers trip open to shut down and isolate the UPS module.

Contact Liebert Global Services immediately. Do not attempt to reset the circuit breakers.

Inverter Fault

D, F, S

At least one of the following alarm conditions is present: Inverter Fault, Rectifier Fuse Blown,

Hardware

Reverse Power, Overload Shutdown, logic power supply failure or inverter output symmetry

D*

failure. The load automatically transfers to the bypass line. The UPS module is shut down

Shutdown

and isolated. Contact Liebert Global Services at once. Do not attempt to reset the circuit

breakers.

D = auto-dial

L = latches

E = logs only

R = remote

F = freezes

S = summary