Intrinsic Safe Barrier Board - Wayne Vista Series Service

B.7.

INTRINSIC SAFE BARRIER BOARD

The intrinsic safe barrier is in the wiring with the handle switches; it uses zener diodes in
order to eliminate the possibility of introducing over 5 VDC into the hydraulics cabinet.
Figures B-25 through B-27 show the connectors on the intrinsic safe barrier, and their
pinouts.
FIGURE B-25. INTRINSIC SAFE BARRIER J1 AND J4 CONNECTOR PINOUT
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Part No. 917543 Rev. A November 1992