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  GEMCO AC & DC Magnetic Brakes (Type CB & TM)
  Magnetic Shoe Brakes
  Type CB Style (AC) Brakes
  Type TM Style (DC) Brakes
  Brake Wheels
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  Optional Equipment
 
 
 
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 GEMCO Models CB & TM Magnetic Shoe Brakes Manual:
   Adobe Acrobat® format
 
Rectifer Operation
DC Magnetic Shoe Brakes
 
Before checking voltages on the rectifier panel, fully adjust brake.
 
Input power to the rectifier can be 380, 480, 550 or 600 volts AC. When the rectifier is energized 220 volts DC is applied to the + and - terminals, which are connected to the brake coils. After a time factor of approximately .8 seconds, a holding voltage is applied to the brake to maintain the brake in the released position.
 
The holding voltage required to "hold in" the brake (released position) is approximately 30 volts DC.
 
When power to the rectifier is cut-off, the brake will de-energize quickly and the main brake spring will set the brake.
 
For more information on setting and holding, setting and releasing times, and general electrical information on brakes, see Shunt Brake connections or consult the factory. A wiring diagram will be furnished with each rectifier or upon request.
 
Two identical brake assemblies can be operated simultaneously by a single rectifier. This applies to TM43, TM63, TM83, TM1035, TM1355, TM1665 and TM1985 brake sizes.
 
OPTIONAL N4 RECTIFIER ENCLOSURE
Acceptable AC Voltage Ranges by Tap Voltages All Voltage Ranges are 50/60 Hz
 
RECTIFIER OPERATION;
TM BRAKE ASSEMBLY (TYPE TMR)

 
WIRING DIAGRAM
 
Open Chassis
NEMA 4
E010327
E010326
Open Chassis
NEMA 4
E023205
E023204
 
Rectifier Assembly
For TM43 ~ TM1985
(1) Brake
 
Rectifier Assembly
TM2311 and TM3014
(1) Brake or TM43 ~
TM1985 (2) Brakes
 
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