Parker 20H-FUEL Guide D'utilisation page 13

3.3 Options Board Accessory
The options board is designed for connection to Safe Extra Low Voltage (SELV) systems only. Maximum 12vdc 50mA.
The options board accessory allows direct communication with a PC via the USB port, and connection of water monitoring, remote alarm, and
remote stop circuits.
3.3.1 Fitting the Options Board
Plug the options board into the 15-way D-type connector on the rear of the generator.
The board should be secured in place using the retaining screw and spacer provided.
Place the cover over the options board and secure in place using the 2 retaining screws
provided.
3.3.2 Wiring the Options Board
RS485
RS485
Remote Stop
Alarm Output
Water Fill Output
USB
JP3 Remote Stop–The remote stop function allows the generator to be connected to
an external stop circuit. Press
JP4 Alarm Output–The alarm output is designed for remote alarm indication. When an
error occurs on the generator, the output switching circuit is activated causing the
remote circuit to be complete.
The remote alarm circuit will be reset when the generator error has been reset.
JP5 Water Fill Output–The water fill output allows for remote monitoring of the water
bottle level. When the water level drops below the mid-point in the water bottle the
output switching circuit is activated. The circuit will only be de-energised when the
water bottle is filled to its upper limit.
10
NOT USED
JP1_1
(DO NOT CONNECT)
NOT USED
JP2_1
(DO NOT CONNECT)
JP3_1 Switched input
JP3_2 GND
JP4_1
Open collector output
JP4_2
JP5_1
Open collector output
JP5_2
JP6
to reset the generator.
JP3 JP3 JP4 JP5 JP4 JP5
1 2 1 2 1 2