Lenze MDSLS Servo spindle motor Manual do Utilizador descarregar pdf (Página 22)

Electrical installation

Important notes

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BA 33.0003 EN 1.0

5 Electrical installation

5.1 Important notes

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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 w ait until the m otor stands still (voltage at the contact while

the motor is turning).

General

Observe the notes in the terminal box of the motor.

Firmly tighten all connections.

Connect PE connector to earthing screw.

Fit connecting cable with strain relief.

Carefully earth the motor.

Voltage

supply

Servo spindle

motors

Servo spindle motors must be fed by servo inverters.

Connect the integrated encoder at the motor side with the

corresponding connections of the servo inverter.

Holding brake

(optional)

DC supply according to nameplate data of the brake or supply with AC

voltage via upstream rectifier (only spring-operated brake, PM brakes

205 V)

Brakes for 205 V can be fed from the 230 V mains via bridge rectifiers,

brakes for 103 V from the 115 V mains.

Do not supply brakes with half-wave rectifiers from the AC system.

Inverter

operation

Observe the connection notes in the corresponding operating

instructions.

Ensure that motor and inverter are correctly assigned.

In particular, observe the speed limits and winding load. *

Cable cross

sections

Correctly dimension the connecting cables to avoid impermissible

heating.

Maintain minimum cross sections to DIN 57100 and secure

appropriately ( see Tab. 1).

Motor

protection

Protection against

overload

Common current-dependent motor protection switches for average

operating frequency

– Set to rated current as indicated on the nameplate.

With very high operating frequency: Use three-phase AC motors from

Lenze 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

No protection possible via overtemperature protector switches or PTC

thermistors of the motor winding

– Take measures according to DIN 57100 / VDE 0530.

Inverter operation

The current or voltage conversion can increase the output current

significantly above the input current.

– The motor supply cable cannot be fused via the mains input fuses o f

the inverter. Take measures according to DIN 57100 / VDE 0530.

1) Supply PM brakes for 24 VDC only with smooth DC v oltage (ripple ≤1%)

* Voltage limits: 1.5 kV peak value, 5 kV/µs r ate of rise; additional information: see the data sheet.

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