Gasboy CFN Series Diagnostic Manual - Manual (Page 193)

Pump Control Unit
12/26/02 6-3
WIRING
All field wiring connections are made to the unit via terminal blocks. The pump control wiring is
split into two classifications, AC and DC. Separate conduits must be provided for each. AC and
DC wiring must never be mixed in any common junction box, conduit, or trough (see CFN SCI or
SCII Installation Manual for detailed instructions). The following lists the connections that can be
found in the Installation Manual. Signals that apply to the pump are shown for only one hose
outlet. Refer to the appropriate component for the exact pinout of each connector.
AC Connectors
TB202 HOT - AC hot power for the pump control unit's power (120 VAC)
NEUT - AC neutral power for the pump control unit's power
GND - AC grounding for the pump control unit
Relay Module FAST A - AC power from breaker for fast flow valve
FAST B - Switched AC power to fast flow valve
SLOW C - AC power from breaker (application varies according to pump)
SLOW D - Switched AC power to pump (application varies according to pump)
SUBM E - AC power from breaker (application varies according to pump)
SUBM F - Switched AC power to pump (application varies according to pump)
Switch Detect 1 SD1 MAIN - AC hot from pump to indicate pump is ready
2 SD1 MAIN - AC neutral for 1 SD1 MAIN
3 SD1 AUX - AC hot from breaker for pump handle activation indication
4 SD1 AUX - AC neutral from pump for pump handle activation indication
DC Connectors
Pulser P 1 - Pulser input
+ 2 - Positive voltage (usually +12 VDC) for the pulser
G 3 - DC ground for the pulser
RS-422 IN Tx+ - RS-422 Tx+ communications to the site controller
Tx- - RS-422 Tx- communications to the site controller
Rx+ - RS-422 Rx+ communications from the site controller
Rx- - RS-422 communications from the site controller
SHLD GND - RS-422 ground
RS-422 OUT Tx+ - Protected RS-422 Tx+ communications (from ICR if PCU is in post)
Tx- - Protected RS-422 Tx- communications (from ICR if PCU is in post)
Rx+ - Protected RS-422 Rx+ communications (to ICR if PCU is in post)
Rx- - Protected RS-422 Rx- communications (to ICR if PCU is in post)
VR Bracket 1 + - Positive power for Veeder Root totalizer pulser
(Optional) 2 - - Ground for Veeder Root totalizer pulser