Warner Electric Preassembled Clutch_Electrically Released Brake Module - Manual (Page 6)

6 Warner Electric • 800-825-9050 819-0346 • P-273-2
Start-Up With the motor at rest, check the
following:
A. With the brake energized, spin the output shaft
by hand to insure that it turns freely .
B. With the clutch/brake control energized,
switch back and forth between the clutch
and brake and observe the armatures
(plates) through the vent holes and opening
in the fan. They should move back and forth
approximately 1/32” when switched.
C . If a scraping sound is noted when the output
shaft is spun, it means an armature is drag ging
slightly because of shock and displace ment
during shipment. This is easily
corrected .
Insert a screwdriver through the vent holes
and slot in the fan and pry the dragging
armature * (clutch or brake as observed) away
from the mating surface evenly all the way
around as far as it will move. Then insert the
screwdriver between the two armatures (back
to back) and pry it evenly back into complete
contact . This will reset the autogap in the
proper position and the unit should now be
ready for further assembly in the drive system
and normal operation. If drag ging armature
is on the brake side, the brake must be
energized during adjustment.
Clutch/Brake
Control
Clutch
Brake
White
Black
Red
Red
Black
Black
AC
DC
DC
Voltage
Voltage
Voltage
Figure 8
Electrical Coil Data: (UMFBC)
Clutch Brake Clutch Brake
Voltage-D.C. 90 90 24 24
Resistance UM-50 452 447 31.8 29.2
(OHMS) UM-180 392 308 26.7 21.7
UM-210 248 203 17.9 13.6
AMPERES UM-50 .199 .201 .755 .822
UM-180 .230 .292 .896 1.11
UM-210 .363 .443 1.34 1.76
WATTS UM-50 18 18 18 19.7
UM-180 20.7 26.3 21.5 26.6
UM-210 32.7 40 32 42.2
Build Up UM-50 52 40 52 40
(Milliseconds) UM-180 72 80 72 80
UM-210 120 90 120 90
Decay UM-50 6.2 5 6.2 5
(Milliseconds) UM-180 12 8 12 8
Mechanical Data
UM-50 UM-180 UM-210
Static Torque 10.5 lb. ft . 21 lb. ft . 56 lb. ft.
Maximum Speed 3600 rpm 3600 rpm 3600 rpm
Average Weight-lbs.
Motor Clutch 3 .4 lbs . 5.1 lbs . 9.1 lbs.
Brake 6.6 8.1 21.5
Imput Clutch 6.4 8.4 19.8
Output Clutch 4 .9 5.2 15.2
Inertia - WR
Armature
.007 lb. ft . .018 lb. ft . .081 lb. ft.
Armature hub .002 .003 .021
Shaft .001 .002 .017
Rotor w/Fan and hub .020 .046 .188
UM-210 20 10 20 10