Warner Electric Gen 2 Clutch_Electrically Released Brake UniModule UM-50FBC, UM-100FBC, UM-180FBC - Manual (Page 6)

Electrical Connections
To avoid injury (or even death), always
make certain all power is off before
attempting to install or service this device
or any electrical equipment.
The conduit connection hole in the
UniModules are threaded for standard ½
inch conduit connection. UniModule FBC
clutches and brakes operate on DC voltage.
Warner Electric offers a complete line of
electronic controls to meet the needs of
almost any clutch/brake application. Each
Warner Electric control will show the proper
wiring connections for its use.
Control Requirements for (FB) Fail
Safe Brakes
Electrically Released Permanent Magnet
Brakes must use one of Warner Electric’s
adjustable power supplies. See the Service
Installation sheet included with the power
supply for connection information.
Note: All Electrically Released Permanent
Magnet Modules are polarity sensitive.
Therefore, the (+) red wire must be connected
to the positive terminal and the (-) black wire
to the negative terminal. Potentiometer control
will then provide adjustment for the proper
brake release point.
When switching a 1020FBC or 2030FBC
power must be applied to both the clutch and
FB brake simultaneously to engage the clutch
and at the same time release the brake.
If a Conduit Box is desired, Warner Electric
Conduit Box Kit, part number 5370-101-042,
can be purchased separately. The Conduit
Box provides two conduit connection holes
for standard ½ inch conduit connectors.
FB Brake Release
Adjustment
Instructions for setting the optimum release
voltage of permanent magnet applied/
electrically released brakes.
The following procedure will result in the
brake releasing and allowing the load to be
free to move. Be sure the load is in a safe
condition before proceeding with
this process.
In a permanent magnet applied/electrically
released brake, the attractive force between
the brake surfaces is created by permanent
magnets. The brake is electrically released by
applying DC power to the electro-magnetic
coil in the brake that opposes the permanent
magnets.
Electrically released brakes are polarity
sensitive: the positive lead of the power
supply must be connected to the positive
(red) lead of the brake and the negative lead
of the power supply must be connected to
the negative (black) lead of the brake.
The power supply applied to the brake must
also be adjustable so that the optimum
release voltage for each individual brake
can be determined and set.
The following procedure describes how to set
the adjustable power supply to the optimum
release point of the brake. A volt-meter is
required to perform the procedure.
No power is applied to motor during this
procedure. Power normally supplied by
motor to brake control should be supplied
by alternate method.
1. With power off, connect the positive lead
Warner Electric • 800-825-9050 P-273-9 • 819-0530 6