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5. Function
5.1. Visualization - Status LEDs
The hybrid motor starter visualizes the operating statuses with a total of four LEDs. The functions of the
LEDs follow the NE 44 NAMUR recommendation.
• A green LED (PWR) indicates the general device status.
The flashing PWR LED indicates a message.
• Left or right rotation of the drive (reverse or forward running) is indicated by a yellow LED (L or R respec-
tively).
• An internal or external error (process error: overcurrent, asymmetry, phase failure) is indicated by a red
LED (ERR).
After the control supply voltage is applied, all LEDs light up once, as an LED test.
5.2. Diagnostic function
Through various diagnostic functions, the hybrid motor starter can detect many internal errors and also
external errors (I/O errors).
• If an error is detected, the device is switched to the safe shutdown state.
• All internal errors cannot be confirmed and are stored in the device. Afterwards the device cannot be
started up.
• In case of external errors, an error acknowledgment is required to exit the safe shutdown state.
• In case of a message, the power path remains switched on; an acknowledgement is not required.
Explanation:
A
=
LED switched off / E
=
LED permanently lit / B
=
LED flashes with approx. 2 Hz (50:50)s
Status
Description
LED: PWR ERR
L
R Error acknow-
ledgement
Green Red Yellow
OFF
No supply voltage (control supply voltage) pres-
ent
A
A
A
A
-
Operational readi-
ness
Supply voltage (control supply voltage) present
E
A
A
A
-
Drive switched on • Reverse running (L)
E
A
E
A
• Forward running (R)
E
A
A
E
Internal error
Internal device error -
Device replacement required
E
E
A
A
Not possible
External error
in controller or I/O
devices
(maintenance re-
quirement, NE44)
Bimetal function:
The motor current is higher than the nominal
motor current specification (e.g. class 10 A):
Cooling time running! (20 minutes)
• Error in reverse running.
E
B
E
A
Automatic
• Error in forward running.
E
B
A
E
Automatic
After 2 minutes, the "L" or "R" flashes:
A manual reset is possible.
• Error in reverse running.
E
B
B
A
Manual
• Error in forward running.
E
B
A
B
Manual
Error restoring the system state:
Checksum
erroneous.
The thermal memory of the bimetal function is set
to the max. value.
The error must be manually acknowledged, also
in automatic mode.
E
B
B
B
Manual
