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B Series Brakes
MI 850A186 1 G
Page 2 of 4
MECHANICAL INSTALLATION
1. Refer to catalog sheet for mounting dimensions.
2. Prior to installation check the rotation by hand and observe that it is smooth and free of
binding or scraping.
3. The rotor shaft centerline must be mounted within 30° of the horizontal plane.
4. Mount the brake on the shaft and tighten the two set screws.
5. Attach the torque arm to the tapped holes in
the machine frame with a “loose” or “floating”
mount to prevent binding forces on the brake bearings.
ELECTRICAL INSTALLATION
For 24 VDC devices
1. Connect the two wires in the junction box to the 24 vdc power source.
For 90 VDC devices
1. Connect the 90 vdc power source to the terminals marked 1,2.
2. Connect the protective bonding circuit to the terminal marked with the P.E. symbol
ENVIRONMENTAL SPECIFICATIONS
Note:
The brake coil system has been changed from Class A to Class F. Refer to the nameplate on
your unit to determine which insulation class that you have.
If you have Class F insulation, the nameplate will denote Class F.
If you have Class A, there will be no notation on the nameplate.
Temperature Range:
Operating
0°C to 40°C
Storage
-30°C to +80°C
Relative Humidity:
5% to 80%
Pollution Degree:
2 (IEC664-1)
Altitude:
0 to 2000 meters
Maximum Current, ADC
Supply Voltage, VDC
0 - 24
0 - 90
Model
Class A
Class F
Class A
Class F
B25
0.38
0.53
B50
0.21
0.29
B50S7
0.76
1.12
B100S2
0.53
B100S4
0.84
B100S5
0.64
TROUBLESHOOTING
Problem
Possible cause
Action
Load is not controlled by brake
Power supply voltage output low
Magnetic powder has
deteriorated or is partially lost
Coil is open
Replace or repair control
Overhaul brake using
repair kit
Replace coil
Load operates in an intermittent
manner with proper 90 VDC
Coil is intermittently open
Replace coil
Brake is noisy and has some
vibration
Bearings are worn
Overhaul brake using
repair kit
