3.5 Nozzle Switch Interface Board
All nozzle switch cables plug into this interface board. This board is in a blue case mounted on
the chassis in the hydraulics cabinet. The board is accessed by lifting the cover off the tabs on
the plastic case. There are thirteen connectors on this board, eight parallel inputs for nozzles
and four for door security switches. The other connector is the output to the ISB board on the
serial communications channel.
The nozzle switch inputs and door switches are 5V. The interface board changes these inputs
to 15V serial communications to the ISB.
Note!
For IEC countries, see the ATEX information in Appendix G.
3.6 Nozzle Switch Converter Board
The Nozzle Switch Converter Board is used to convert the nozzle serial communications back
to parallel for the nozzle signals going to the iGEM board. The door security switches, if present,
are handled in the same manner.
3.7 ISB Module
The ISB Module consists of the board mounted inside a white or transparent case that is
mounted on top of the vapor barrier in the middle of the electronics head. The cable from the
Nozzle Switch I/F board and the WIP pulser cables connect to the ISB board. The serial outputs
for the WIPS are sent to the iGEM board. The serial output for the nozzles are sent to the Nozzle
Switch Converter board.
3 Channel board is used for dispensers that have two WIP’s. If the dispenser has more than two
WIP’s, the 1-channel board is added and mounted on the opposite side of the ISB bracket. In
this case, the output of one of the WIP’s is sent to the 1-channel board, which then sends that
signal along with the third WIP’s signals to the iGEM board.
Note!
For IEC countries, see the ATEX information in the Appendix G of this manual.
3.8 Temp Comp Module and TTL/CAN Converter
Optional Equipment:
Temperature probe cables plug into the Temp Comp module. The board is located inside a blue
case mounted on the chassis in the hydraulic cabinet. The board is accessed by lifting the cover
off the tabs on the plastic case. There are eleven connectors on this board, 10 of these are
parallel inputs for the temperature probes. The other connector is the signal output to the ISB
board on a serial communications channel. This connector also provides 15Vdc input power for
the board. The CAN-TTL Converter board receives temperature data from the temperature
module board via the ISB. The board provides the temperature module with 15Vdc power, and
it communicates the temperature data to the iGEM pump computer board via CAN bus. This
board is powered by the 24Vdc CAN bus power provided.
28 WM048523 Rev 08 01/2019
3 Electronics
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