SEQUENCE FOR TROUBLESHOOTING NEXUS STATION COMPONENT ERRORS | REFERENCE DIAGRAMS 76
APR/2017 TECHNICAL OPERATIONS AND MAINTENANCE GUIDE | NEXUS STATION
Power source, encoder, and sensor connections
Most of the power connections are located in the upper-left corner of the primary control board. Most of
the encoder connections are located at the upper-right corner of the primary control board. They are
marked on the board by component. Use the next photos to help you locate the power source and encoder
connections for the components you are troubleshooting.
Power source connections
Encoder and sensor connections
Turnstile motor (J4)
Push-rod motor (J7)
Slide plate motor (J6)
Security door motor (J4)
Air valve motor (J39)
Brake (coupler) motor
(J37)
Pin actuator motor (J5)
Turnstile shift encoder (J30)
Push-rod encoder
Turnstile motor encoder (J29)
Security door encoder (J31)
Load and unload (front carrier) sensor (J33)
Send-receive (back of turnstile) sensor (J34)
Coupler / brake sensor (J35)
Control panel (HMI) power
Primary station power
Connection to the HMI board (J77)
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