37
Motors with brake
The mains line in the version with incorporated brake is connected in the
motor terminal box and in the version with the built-on brake in the separate
brake terminal box. Observe the supplied connection diagram and the rated
voltage visible on the rating plate. In the presence of an AC connection the
brake coil is energized by means of a silicon rectifier accommodated inside
the explosion-proof encapsulation.
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The temperature sensors applied both in the motor and brake
are to be connected as envisaged in Section "Motors with
temperature monitoring", page 25.
Motors with brake or tachometer mounted under the ventilator hood
In order to connect brakes or tachometers mounted under the motor
ventilator hood, the latter must be disassembled.
Unscrew any shock pulse sensors or regreasing devices. Loosen the
fastening screws on the hood and remove the hood from the motor.
Connect the brake of tachometer as per the attached circuit diagram and
pass the cable along the shortest route through the motor fins towards the
main terminal box. It is recommended to insert a protective tube over the
connection cable in the fin area to prevent wearing.
Fit the ventilator hood back on the motor and check the position of the
boreholes for any shock pulse sensors and regreasing devices. In the case
of motors with an axial fan running into a nozzle, make sure that there is a
uniform air gap all around between the fan and nozzle. Secure the hood with
the fastening hoods, (torque as per Table 4, page 17)
Check manually that the fan runs freely once the mounting is completely.
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