Warner Electric Gen 2 Electro-Module EM-50, EM-100, EM-180 - Manual (Page 9)

Section I: 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 motor clutch
module (10), brake (20, 20FBB or 20FBC), and
input clutch (30) are threaded for standard 1/2
inch conduit connection. Electro-Module clutches
and brakes operate on DC voltage. Warner
Electric offers a complete line of electronic con-
trols to meet the needs of almost any clutch or
clutch/brake application. Each Warner Electric
control will provide 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.
Switching of clutch and (FB) brake with this type
of module should allow both clutch and brake to
be engaged and disengaged simultaneously for
proper operation.
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 1/2 inch conduit connectors.
Note: If you have a clutch/brake module, you may
need two (2) Conduit Box Kits because the clutch
wires and brake wires exit from separate holes.
Section J: FB Brake Release Adjustment
(20FBB, 20FBC)
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.
9 Warner Electric • 800-825-9050 819-0529
Table 3
Distance Load is
Applied from Maximum
Electro-Module Housing Face Load Rating
"A" Inches "R" Lbs.
EM-50 1" Center of Shaft 177
2" End of Shaft 123
3" 95
EM-100 1” Center of Shaft 192
2” End of Shaft 134
3” 104
EM-180 1" Center of Shaft 192
2" End of Shaft 134
3" 104