Electrical installation
Important notes
5
30
BA33.0001 EN 2.0
5.1 Important notes
Danger!
Hazardous voltage at the power terminals, even if the plug is removed:
residual voltage > 60 V!
Before working at the power terminals, disconnect the drive controller from
the mains and wait until the motor stands still (voltage at the contact while
the motor is turning).
General
information
z
Observe the notes in the terminal box of the motor.
z
Make sure that the terminal bridges and arranged correctly.
z
Tighten all screw connections.
z
Connect PE conductor to earthing screw.
z
Use a strain relief for the connecting cable.
z
The motor must be earthed carefully.
Voltage
supply
Servo motors
z
Servo motors must be supplied by servo inverters.
z
Connect the integrated encoder at the motor side with the corresponding
connections of the servo inverter.
Holding brake
(optional)
z
DC supply in accordance with nameplate on brake or AC supply via upstream
rectifier (only spring-operated brakes, PM brakes 205 V
1).
z
Brakes for 205 V can be fed from the 230 V mains via bridge rectifiers, brakes
for 103 V from the 115 V mains.
z
Brakes must not be supplied from AC mains using half-wave rectifiers.
Inverter
operation
z
Observe the connection information in the corresponding operating
instructions.
z
Make sure that the motor and inverter are correctly assigned.
z
Special attention must be paid to the speed limit and the winding load.
2)
Cable
cross-section
z
Connecting cables must be correctly dimensioned to ensure that no
impermissible heating occurs.
z
Adhere to the minimum cross-section in acc. with DIN 57100 and fuse
appropriately.
Motor
protection
Protection
against
overload
z
Standard current-dependent motor protection switches for average switching
– Setting to the rated current indicated on the nameplate.
z
For very high switching rates: use Lenze three-phase AC motors with thermal
switches or PTC thermistors in the winding.
– The thermal switches are integrated in the winding as NO contact or NC
contact. The response temperature is permanently set.
Motor supply
cable
z
No protection possible through the overtemperature protector switch or PTC
thermistor of the motor winding
– Take measures according to DIN 57100 / VDE 0530.
Inverter
operation
z
The current or voltage conversion can increase the output current
significantly above the input current.
– The motor supply cable cannot b e fused via the mains input fuses of the
inverter. Take measures according to DIN 57100 / VDE 0530.
1) Supply PM brakes for 24 VDC only with smooth DC voltage (ripple ≤1%)
2) Voltage limits: 1.5 kV peak value, 5 kV/µs rate of rise; further information: E catalogue.
Stop!
The bore h oles in the terminal box are closed with plugs to enhance protection
during transport. These must be replaced with screw fittings or blanking plugs
to meet the require ments of the protection type.
In the case of MC S motors, the openings are cast closed and can be opened by
the customer as required.
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