16
4. Function
4.1. Visualization - LEDs status
The hybrid motor starter displays the operating conditions with a total of four LEDs. The functions of the
LEDs are based on the NAMUR recommendation NE 44.
• The operating status of the relay is displayed via a green LED (PWR).
• The reverse or forward running of the drive is always displayed by a yellow LED (L, R).
• An internal or external error (process error: overcurrent, phase failure) is signaled by a red LED (ERR).
After the control supply voltage is applied, all LEDs light up once as LED test.
4.2. Diagnostic function
The hybrid motor starter is not only capable to detect many internal errors, but also external error (peri-
pheral errors) by various diagnostics functions.
• If an error is detected, the device is switched to a safe switch-off mode.
• All internal errors cannot be acknowledged and are stored in the device. The device then cannot be
started again.
• In case of external errors, an error acknowledgment is required to exit the safe switch-off mode.
Explanation: A
=
LED switched off / E
=
LED lights up / B
=
LED flashes approx. 2 Hz (50:50)
Status
Description
LED: PWR ERR L
R
Acknow-
ledgment
OFF
No supply voltage
(control supply voltage)
A
A
A
A
-
Readiness
for operation
Supply voltage ( control supply voltage) present
E
A
A
A
-
Drive activated
• 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 the control or
peripherals
(Maintenance
requirement,
NE 44)
Bimetal function:
The motor current is greater than the rated
motor current (i.e. Class 10 A).
Cooling time on! (20 minutes)
• An error occurred during the reverse running.
E
B
E
A
Automatic
• An error occurred during the forward running.
E
B
A
E
Automatic
"L" or "R" flashes after two minutes:
Manual resetting is possible
• An error occurred during the reverse running.
E
B
B
A
Manual
• An error occurred during the forward running.
E
B
A
B
Manual
Error when restoring the system condition:
Incorrect checksum.
The thermal memory of the bimetal function is set
to the maximum value.
The error must also be acknowledged manually in
the automatic mode.
E
B
B
B
Manual
