Rapid-Air PALLET MASTER (PMD): PMD35 & PMD50. 115VAC, 1PH, 60HZ - Manual (Page 31)

Rapid Air Corporation
C. FUSING. The RAMM has provision for a built in AC line fuse and armature
fuse. The AC line fuse protects the control against catastrophic failure– if the
fuse blows, the control is miswired, the motor is shorted or grounded, or the
RAMM control is defective. The armature fuse provides overload protection for
the motor and control. Choose the proper size armature fuse by multiplying the
maximum DC motor amps by 1.7. On domestic 240 Volt AC lines, separate
branch circuit protection for each line must be used. All fuses should be normal
blow ceramic 3AG or ABC or equivalent.
CAUTION: Do not bundle potentiometer connections (P1, P2, P3) and inhibit
connections (I1, I2) with AC line or motor wires.
CATUION: 1. The voltage feeding P2 and F– must be isolated from the AC line.
Do not ground P2 or F– to set up a zero ground reference.
2. Do not bundle signal wires to P2 and F– with AC line motor
connections. If signal wires are over 18”, use shielded cables.
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-90V and 1 1/2 HP-180VDC.
25 AMP fuse for all motors 1 and 1 1/2 HP-90v and 2 and 3 HP-180VDC.
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