Vestil EPT-30 - Manual (Page 32)

32
Curtis PMC 1207/1207A Manual 25
Power Wiring for Compound Motor
The field must be wired between B+ and A2 and the armature between M- and A2 .
The internal plug diode in the 1207A is connected between M- and A2 ; therefore,
the armature and field positions cannot be interchanged.
If the shunt is rated for under 2 amperes, it can be connected directly to the
controller as shown in Figure 4
A
. If the shunt is rated for higher than 2 amperes,
a contactor must be used to control the shunt field.
Control Wiring for Compound Motor
Control wiring for the compound motor application is like that for the standard
(series motor) wiring. The main contactor, if one is used, is normally connected
directly to B-.
The throttle shown in Figure 4 A is a 5k
Ω–0 type. Various other throttles can also
be accommodated, and are discussed in the throttle wiring section.
Polarity protection diodes and control fuses must be sized appropriately to
handle the increased current from the shunt field.
2 A — INSTALLATION & WIRING: 1207A Controller
16-pin detail (see Fig. 4 A ):
BRAKE
MULTI
MODE
EMERGENCY
REVERSE
FORWARD
REVERSE
KEYSWITCH
EMERGENCY
REVERSE
CHECK
OUTPUT
FORWARD
CONTACTOR
REVERSE
CONTACTOR
2-WIRE POT
(5 k Ω)
POT
LOW
8 7 6 5 4 3 2 1
16 15 14 13 12 11 10 9
SHUNT