EUCHNER MGB (V1.2.3) - Manual (Page 7)

MGB Help for Setup and Service
4. Switch the voltage on again
or
release the reset button
5. Wait until LEDs DIA1 flash three times or stop flashing entirely (after approx. 8 s)
6. Close the safety doors
 The MGBs are now ready for operation again
2.3 LED DIA 1 flashes 3 times
The device indicates that it is ready to teach in a new handle module. Observe the specifications for teaching in
a handle module in the system manual for this purpose.
2.4 LED DIA 1 flashes 4 times (separate or series operation)
Fault symptom:
The MGB displays the fault state “output fault”.
Possible fault causes:
 The evaluation unit connected to the MGB and the MGB do not have a common reference potential
(common ground)
 A ground loop has been produced by bridges having been installed both on the MGB and in the control
cabinet (refer to the system manual for this purpose).
 The internal output circuit is damaged.
 24 V present at output O
A
or O
B
Remedy:
1. Check the wiring and correct it
2. Open all safety doors on which the DIA LED is flashing (irrespective of the number of flashing pulses)
3. Switch the voltage off at all devices
or
press the reset button (if present) that controls ALL integrated reset inputs in the series connection
4. Switch the voltage on again
or
release the reset button
5. Wait until LEDs DIA1 flash three times or stop flashing entirely (after approx. 8 s)
6. Close the safety doors
 The MGBs are now ready for operation again if no fault occurred in the internal output connection.
115387-01-04/12 Subject to technical modifications Page 7/12