Manual

14
Curtis PMC 1207/1207A Manual 7
Power Wiring for Series Motor
In every wiring configuration, it is imperative that the field be wired between the
controller’s
B+ and A2 terminals and that the armature be wired between the M-
and A2 terminals. The internal plug diode used in the 1207 is connected between
M- and A2. Therefore, the armature and field positions cannot be interchanged.
Reversing contactors can be used to switch either the armature or the field.
Control Wiring for Series Motor
Wiring for the input switches and contactors is shown in Figure 3 (see detail
below). The main contactor, if one is used, is normally connected directly to the
controller. Optionally, the main contactor can be switched directly by the
keyswitch or brake, leaving Pin 4 unconnected.
The throttle shown in Figure 3 is a 5kΩ–0 type. Various other throttles can also
be accommodated, and are discussed in the throttle wiring section.
2 — INSTALLATION & WIRING: 1207 Controller
16-pin detail (see Fig. 3):
BRAKE
MULTI
MODE
EMERGENCY
REVERSE
FORWARD
REVERSE
KEYSWITCH
EMERGENCY
REVERSE
CHECK
OUTPUT
MAIN
CONTACTOR
FORWARD
CONTACTOR
REVERSE
CONTACTOR
2-WIRE POT
(5 kΩ)
POT
LOW
87654321
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