NORD Drivesystems B1091 - Manual (Page 20)

-20- B1091-GB-4613 www.nord.com
8. Options for motors for
use in Zone 22
8.4 Brake option
Motors with the additional labelling BRE (e.g. 80S/4 3D BRE 10) are equipped with a brake and must be
monitored via the integrated temperature sensor. If the temperature sensor of one of the components (motor
or brake) is triggered, the entire drive must be safely shut down. The motor and brake PTC's must be
connected in series.
The brake may be used as a holding brake with up to 4 activations per hour.
An optional manual release (with a lockable manual release lever) may only be used if no explosive
atmosphere is present.
Notice!
Observe the operating instructions for the brake!
The DC voltage supply for the brake must be implemented via a rectifier located in the motor terminal box or
via a directly supplied voltage. The brake voltage shown on the type plate must be complied with.
The power supply lines must not be laid in the same cable together with the temperature sensor circuit.
The brake functionality must be checked before start-up. There should be no rubbing noises, as this could
lead to impermissible excessive heating.