Overspeed - Siemens SIMOTICS DC 1HS6 Operating Instructions And Installation

Commissioning

7.7 Overspeed

● If mechanical operation does not improve immediately after switching the motor off, the
● If the motor is running perfectly, switch on the cooling equipment.
● Observe the motor for a while during no-load operation.
● If it runs perfectly, connect a load.
See also
Switching on (Page 138)
7.7 Overspeed
Overspeed
When the exciter circuit is deactivated, the machine can enter operating conditions that
destroy the machine. Death, serious injury, or material damage will result.
● Interlock the control in such a way that the armature circuit can be connected only when
● If the exciter circuit fails, switch off the armature circuit immediately.
See also
Safety notes (Page 15)
70
cause is mechanical, e.g. imbalance of electrical machines, etc.
NOTICE
Overheating during test runs without water cooling
The motor can overheat without water cooling. Reduce the ON duration accordingly if the
water cooler is not to be operated during a test run.
– Check whether it is running smoothly.
– Record the voltage, current, and power values.
– As far as possible, record the corresponding values of the driven machine.
– Monitor and record the temperatures of the bearings, windings, and so on until the
system reaches a steady state.
DANGER
the exciter circuit is energized.
SIMOTICS DC 1HS6
Operating Instructions 02/2016