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I.L. 17403
Page 7
Effective 9/04
EMERGENCY STOP
The EMERGENCY STOP pushbutton provides a faster
stop (by approximately 1/10 of a second) by bypassing
the distributed opening sequence provided when the nor-
mal STOP pushbutton is operated. The built-in distributed
opening sequence insures that each set of contacts associ-
ated with a phase takes it share of the wear associated
with opening the circuit first and the ease of opening last,
to provide uniform wear on all contacts and provide longer
life for a given set of contactis, i.e., all three phases wear
at the same time.
THREE-WIRE CONTROL WITH INTERNAL HOLDING
CIRCUIT
The virtues of three-wire control can also be obtained
without an external auxiliary contact and jumper by using
the internal holding circuit. Wire as shown in Figure 7 or
8. Attach and route twisted pair or shielded wires to a
remote reset/trip indicator module where provided.
Without Communications
Wire control devices in the same manner as conventional
motor controllers, except omit the holding circuit interlock.
With Communications
Attach a WPONI communications module and connect it
to the INCOM network daisy-chain fashion as shown in
Figures 4 and 8.
When wired as shown in Figure 8, the motor can be started
and stopped via the IMPACC system. In order to start the
motor via IMPACC, control circuit terminal P must be ener-
gized. The motor starter can be reset via IMPACC when
wired as shown in Figure 8.
Fig. 7 Internal Holding Circuit, Three-Wire
Fig. 8 Internal Holding Circuit, Three-Wire, with
IMPACC
5300C76B
5300C76A