33
Motor
Manual
be filled with a mixture of water and ethylene glycol. Con-
tact Hoyer regarding the proportion of the mixture.
9.4 Motor operation with a VFD
Before operating a motor with a VFD, ensure that the pa-
rameters of the VFD have been configured correctly accord-
ing to the instructions of the VFD manufacturer and the
motor parameters. If the motor does not run smoothly or
produces abnormal noises, switch off the supply and make
sure the motor is de-energised, and then find the root cause
of the problem.
9.5 Operating speed
When operating a motor above its nominal speed, ensure
that the motor speed does not exceed the maximum per-
missible speed for the application and the maximum per-
missible speed of the motor. Maximum speeds are defined
by IEC 60034-1 in Table 18 (see Figure 5, Maximum permissi-
ble rotor speeds, below). Higher-speed motors are available
upon request; contact Hoyer Motors for more information.
Frame number 2 pole 4 pole 6 pole
≤ 100 5200 3600 2400
112 5200 3600 2400
132 4500 2700 2400
160 4500 2700 2400
180 4500 2700 2400
200 4500 2300 1800
225 3600 2300 1800
250 3600 2300 1800
280 3600 2300 1800
315 3600 2300 1800
NOTE: The above values may have to be reduced to meet the re-
quirements of IEC 60079
Table 16 Maximum permissible rotor speeds
To Next Page
Loading...
