FW Murphy Selectronic S1501 series, Installation And Operation Manual

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Section 50 00-02-0271
2018-10-23 - 23 -
NOTE : A valid stop occurs when the
■ START/STOP key is pressed
Regardless of the Start-Stop mode.
Local-Off-Remote (L-O-R) Switch
L-O-R switch installed across TB30 (Local) and TB31 (Remote). A valid sequence occurs
when the L-O-R switch is placed in the Local position and the Start-Stop key is pressed OR the
L-O-R is placed in the Remote position, and the Remote Start signal is seen. A valid Stop
occurs when the L-O-R switch is placed in the OFF position, OR of in the Remote position and
a Remote Stop is seen.
Remote Start-Stop
Jumper installed in TB31. A valid sequence occurs when a Remote Start signal is seen.
Likewise, a valid stop occurs when the Remote Stop signal is seen.
Maintain Start
Jumper installed in TB31. A valid sequence occurs when the Maintain Start signal is seen.
Likewise, a valid stop occurs when the Maintain Start signal is lost.
Typical Start/Stop Wiring
Modbus Start/Stop and Reset
The S1501 system can be started and stopped remotely through the
Modbus communications port (RS232/RS485 serial port). Wri
ting a “1”
to the start/stop register (40010) will initiate a start. Writing a “Ø” to the
start /stop register will initiate a stop. Writing “Ø” to the shutdown status
register (40004) will cause a reset.