Mounting the External Braking Resistor

Preparing the Control Cabinet

During operation, the surface temperature of the external braking resistor may exceed 250 °C (482 °F).

 DANGER
EXTREMELY HOT SURFACES
  • Do not make unprotected contact with the surfaces of the external braking resistor.
  • Keep all flammable or heat-sensitive materials away from the external braking resistor.
  • Verify that the heat dissipation is sufficient by performing a test run under maximum load conditions.
Failure to follow these instructions will result in death or serious injury.

Step

Action

1

If necessary to maintain and respect the maximum ambient operating temperature, install an additional fan in the control cabinet.

2

Do not block the fan air inlet of the product.

3

Observe tolerances as well as distances to the cable channels and adjacent braking resistors or other heat producing equipment.

Required Distances

  • Keep a distance of at least 100 mm (3.94 in) above and below the external braking resistor.

  • Keep a distance of at least 50 mm (1.97 in) to the right and left of the external braking resistor.

NOTE: Do not lay any cables or cable channels over the external braking resistor.

Not Allowed Mounting Positions

Do not mount the external braking resistor below another device.

Do not mount the external braking resistor in any of the following mounting positions.

Mounting the External Braking Resistor

The following options are available for mounting the external braking resistor:

  • Four through holes in the corners of the external braking resistor (1).

  • Mounting bracket supplied with the external braking resistor (2).