FAQ

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How do I install a brake so that it is compatible with a VFD (Variable Frequency Drive)?

When a VFD is used, the brake must have an independent power supply as the brake will only release with a specific voltage and frequency. For reference, if the application is holding only, most likely you are using a VFD motor controller. These controllers can provide dynamic stopping electrically.

How is a brake wired to a motor?

Stearns Brake coils are single phase coils and can be wired directly to single-phase voltage inside the motor junction box. For more information, please contact the motor manufacturer.

Where can I get the installation and service instruction sheet for my brake?

Installation and service instruction sheets are shipped with brakes, housed on our website's resource library and can be requested directly from Stearns.

Are the mounting bolt recesses the same for IP23 and IP54 87,00 series brakes?

Yes. The NEMA frame size does not change based on the IP rating of the enclosure.

How do I install a DC solid State switch (81,000 & 82,000 Series), converting from AB Mechanical DC Switch?

Instructions for wiring a Solid State DC Switch in either Stearns 81,000 or 82,000 Series Brake, can be found in Stearns Drawing SC582.