Rapid-Air PALLET MASTER (PMDH): PMDH35 & PMDH50. 115VAC, 1PH, 60HZ - Manual (Page 17)

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1. AC Line Fuse is chosen according to the maximum rating of the control:
12 AMP fuse for all motors up to 3/4 HP-90 VDC and 1 1/2 HP-180 VDC.
25 AMP fuse for all motors 1 and 1 1/2 HP-90 VDC and 2 and 3 HP-180 VDC.
(Use Buss ABC, Littlefuse 326 ceramic fuse or equivalent.)
2. Armature Fuse can be chosen in accordance with the fuse chart. Note: The armature fuse is
calculated based on the approximate full load DC current rating of the motor times a from
factor of 1.5. If motor has characteristics not consistent with these approximations, a differ-
ent fuse value may have to be used. Fuses are available from your distributor.
TABLE 4. ARMATURE FUSE CHART
ADJUSTMENTS AND CONTROL FUNCTIONS
The RAMM has been factory adjusted to provide 0-full speed using the speed control knob.
Minimum and Maximum speed trim pots are provided to change the speed from other than 0-
full speed. The Acceleration (ACCEL) trim pot is provided to allow for a smooth start over an
adjustable time period each time the AC power is applied or the speed pot is rotated. The DE-
CEL trim pot controls the amount of ramp-down when the speed pot is adjusted to a lower
speed. The Current Limit (CL, or torque output) adjustment is factory set to approximately 1
1/2 times the motor rating. The IR Compensation (IR) is factory adjusted to provide excellent
motor regulation under normal operation.
WARNING: If adjustments are made under power, insulated adjustment
tools must be used and eye protection must be worn.
90VDC 180VDC
MOTOR MOTOR
HORSEPOWER
APPROX.
DC MOTOR
CURRENT
(AMPS)
FUSE
RATING
(AC AMPS)
1/4 1/2
1/2 1
3/4 1 1/2
1 2
1 1/2 3 2.5
5.0
7.5
10.0
15.0 4
8
12*
15
25*
*Also used as AC line Fuse.