Technical data

Diagnosis
Operating Manual
68ID 442281.00
WE KEEP THINGS MOVING
13
13.3.6 36:High voltage
Resolution Level Response Fault counter
The voltage in the intermediate circuit ex-
ceeds the permitted maximum (DC link volt-
age display in E03).
Malfunc-
tion
The motor continues to coast. The brake chopper is
switched off as long as the malfunction is present. Any
existing brakes are engaged if they were not released via
F100 independent of the device controller.
Z36
Possible cause Test Measure Acknowledgement
Supply voltage too high Check whether the supply voltage exceeds
the permitted input voltage.
Take measures to adjust the supply voltage. Switch the device on/off
or programmed ac-
knowledgement
No braking resistor con-
nected
Check the wiring. Connect a braking resistor.
Brake chopper is deac-
tivated
Check whether A22 = 0 is set. Enter the values of the braking resistor in
the A21, A22 and A23 parameters.
Braking resistor too
small or too large
• Check whether A21 does not reach the
permitted value.
• Check whether the resistance is suit-
able to dissipate the power losses aris-
ing.
Connect a suitable braking resistor.
Braking ramps to steep Observe the DC link voltage during a brak-
ing procedure, e.g. using a Scope record-
ing.
• Extend the braking ramps.
• Connect a suitable braking resistor.
• Check the application of the DC link
connection.
Brake chopper is faulty Observe the DC link voltage in the Scope. If
this increases to the overvoltage limit with-
out hindrance, the brake chopper is faulty.
Please contact our service department, see
section 1.4 Further support