25
Installation and Maintenance Manual
Chapter 8: Troubleshooting
If the resolver cable must be run through a terminal strip, it must be mounted in a small enclosure with no
other wiring. The shields of the incoming and outgoing cable must be tied together and isolated from
ground.
Special purpose contact inputs all operate by connecting the input pin on the
1995 PLS
to a power or
GND terminal (depending on method wired per Fig. 11-3; Chapter 11: Wiring Diagrams) on the
1995
PLS
through a remote contact or solid-state switch. These computer level signals must be protected
from induced electrical noise.
The contact used to activate the input should not be located outside the enclosure in which the
1995
PLS
is mounted. Any wiring between the
1995 PLS
input terminals and this contact located within the
enclosure should be routed away from any power handling relays, contactors, or other noise generating
devices.
If the input is to be activated by a remote device, the contact of the remote device should be used to
energize a relay within the enclosure. The contacts of this relay are wired to the
1995 PLS
input
terminals.
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