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Overview of Fault Indications and Safeties ESIE06-05

3–18 Part 3 – Troubleshooting

1JA/2JA HP SENSOR ERR

1JC/2JC LP SENSOR ERR

Purpose

■ Detect if sensor is broken or not good connected (sensor out of range).

1U1/2U1 REV PHASE PROT

Symptom: Sensor error

POSSIBLE CAUSES CORRECTIVE ACTION CONSEQUENCE

The sensor is broken or not

correctly wired.

If value is out of voltage range:

■ If value < min value (0.08V)

■ If value > max value (4.92

V).

Check if the wiring is accord-

ing to the wiring diagram

■ If value is too high (above

range) ==> display “+ER”.

■ If value is too low (below

range) ==> display “-ER”.

Circuit switched off.

RESET : Possible to reset (manual) if the value is within range.

Symptom: Reverse phase protector is activated.

POSSIBLE CAUSES CORRECTIVE ACTION CONSEQUENCE

Two phases of the power sup-

ply are connected in the wrong

phase position.

Invert two phases of the power

supply (by licensed electri-

cian).

Unit switched off.

One phase is not connected

properly.

Check the connection of all

phases.

Voltage too low. Measure the supply voltage.

RESET : After inverting two phases or fixing the power supply cables properly, the protector is

reset automatically, but the controller still needs to be reset.