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PM-1030V v5 2020-10
Copyright © 2020 Quality Machine Tools, LLC
NOTES
1. This is a brushed dc motor.
2. RUN MOTOR (green) and STOP MOTOR (red) switches
are momentary-type push buttons that return to their
normal state when released.
3. The motor control unit is Penta Power KBLC.
4.
The filter unit is a printed circuit assembly that suppress
-
es high frequency electrical noise (RFI/EMI) caused by
devices in the motor control unit. It prevents feedback of
such interference to the 110Vac supply.
5. When pushed, the E-STOP button remains in, discon-
necting power, until reset by twisting action.
6. For electrical continuity the Chuck Guard and Gear Cov-
er must be closed at all times.
7. The contactor is an ac powered power-switching relay
controlled by 5 low-power contacts: RUN MOTOR, STOP
MOTOR, E-Stop, Chuck Guard, and Gear Cover.
CHANGING MOTOR DIRECTION ...
When rotated from F to R, and vice versa, the Direction
Switch swaps the A+ and A- connections to the motor (switch
contacts 1 and 7 to 2 and 6).
HOW THE CONTACTOR WORKS ...
If, and only if, the Direction Switch (F-O-R) is set to either F or
R, the neutral (N) line is connected to the normally open RUN
MOTOR contact. The hot line (L) is full-time connected to the
contactor coil, terminal A1.
When the RUN MOTOR button is pressed the contactor coil
(A2) is energized through the “initial” line (green arrows). This
energizes the motor drive through contacts 5L3-6T3 (L) and
3L2-4T2 (N). At the same time an alternate energizing path is
completed through contacts 13 and 14 (red arrows). This is the
“maintain” path that keeps the coil energized when the RUN
MOTOR button is released.
When the STOP MOTOR button is pressed, the neutral line
from the E-STOP button is broken, de-energizing the contactor
coil.