Siemens S120 configurationmanual Interfaces Electrical connections

Interfaces

8.2 Electrical connections

8.2Electrical connections

DANGER

Risk of death, serious personal injury (electrical shock), and/or material damage if direct drives are connected incorrectly.

Motors must be connected in accordance with the circuit diagram provided in this documentation and require a sinusoidal current injection. They must not be connected directly to the three-phase supply because this will damage them.

The motors are designed to be operated on drive systems that are supplied via power supply networks grounded with low resistance (TN systems).

See also the documentation for the drive system.

DANGER

Components in electrical devices may be under hazardous voltage. There is an electrical shock hazard!

When the rotor is rotating, a voltage is present at the motor terminals that increases proportionally with the speed. At no-load speed, the amplitude value of the voltage at the motor terminals is the same as the voltage value of the converter DC link voltage.

All work involving the electrics must only be carried out by skilled personnel when the device is disconnected from the power supply and the motor is at a standstill.

Note the regulations for working on electrical installations.

In particular, the following safety rules for working on electrical installations in accordance with EN 50110-1/BGV A3 must be observed:

∙Disconnect the system.

∙Protect against reconnection.

∙Make sure that the equipment is de-energized.

∙Ground and short-circuit.

∙Cover or enclose adjacent components that are still live.

Only work on electrical devices when they are de-energized. The protective conductor should be the first thing to be connected and the last to be disconnected.

All PELV circuits must meet the requirements of electrical separation in accordance with EN 61800-5-1.

WARNING

The connection block on the motor for the motor supply cables (power and signal cables) must never be removed.

This could destroy the motor.

142	1FW6 Built-in torque motors
	Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3