Gasboy CFN Series Site Controller III Start-up - Manual (Page 50)

Jumpers and Switch Settings PCU
Page 44 MDE-4793A CFN Series Site Controller III Start-up Manual for CFN III Versions 3.5 and above · November 2008
Delay Time
(seconds)
SB-6 SB-7 SB-8
RLY1 RLY2 RLY3
0 Closed Closed Closed
1 Open Closed Closed
2 Closed Open Closed
3 Open Open Closed
4 Closed Closed Open
5 Open Closed Open
6 Closed Open Open
7 Open Open Open
10 The settings for switch bank SC (1 through 4) determine when the PCU begins counting pulses
for a particular pump. When a switch is open, the PCU begins counting pulses when the
corresponding pump is activated. When a switch is closed, as it should be for most
configurations using mechanical pumps, the PCU does not count pulses for the corresponding
pump until the mechanical reset has completed. The switch should be closed when the pump is
wired for postpay-prepay console operations.
Switch Function
SC-1 Mode pump 1 Open = Normal, Closed = Reset Complete
SC-2 Mode pump 2 Open = Normal, Closed = Reset Complete
SC-3 Mode pump 3 Open = Normal, Closed = Reset Complete
SC-4 Mode pump 4 Open = Normal, Closed = Reset Complete
11 In switch bank SC, 5 through 8, only switch 6 and 8 are active. Switch SC-6 is the Deadman
Timer Switch. If enabled, the PCU must be polled at least every 15 seconds by the SC. If it
fails to sense a poll at that time, it turns all relays off. If Reset Complete Mode is used on any
pump on a particular PCU, the deadman timer should be disabled. Switch SC-8 enables the
test mode allowing the basic PCU functions to be tested without the use of a SC.
Switch Function
SC-5 No function in on-line mode
SC-6 DEAD Open - deadman timer enabled
SC-7 No function in on-line mode
SC-8 TEST Open - Test mode; Closed - On-line mode
12 Reinstall the EXPMUX Pump Control CPU board.