Emerson iPro SERIES Información técnica descargar pdf (Pagina 17)

Technical Information

D7.21.2/1011/E

17/17

Flash

code

Alarm conditions

Possible failure reasons

Troubleshooting measures

Low voltage

Trip: Appears when there is a low

compressor voltage.

Supply voltage is not in the

specified range.

Loose wiring connections at the

terminal plate.

Worn out contactors.

Faults with other peripheral

electrical loads.

Verify voltage supply from the main buss.

Verify voltage into and out of contactor (repair or replace contactor if necessary).

Measure voltage at the compressor terminal (refer to AE10-1244, Recommended

Contactor Selection for 3-Phase Motor Control – Power Supply Problems).

Verify that motor electrical connections are tight at the compressor.

Verify that there are not any faults with other peripheral electrical loads (for example

fan motors).

Voltage

imbalance

Trip: Appears when the voltage

imbalance value exceeds the set

value (default 5%).

Loose wiring connections at the

compressor terminal plate inside T-

Box.

Worn out contactors.

Faults with other peripheral

electrical loads.

Single phasing conditions.

Verify voltage supply from the main buss.

Verify voltage into and out of contactor (repair or replace contactor if necessary).

Measure voltage at the compressor terminal (refer to AE10-1244, Recommended

Contactor Selection for 3-Phase Motor Control– Power Supply Problems).

Verify that motor electrical connections are tight at the compressor.

Verify that there are not any faults with other peripheral electrical loads (for example

fan motors).

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