Gasboy Site Controller III Start-Up - Manual (Page 53)

MDE-4375 CFN Series Site Controller III Start-Up Manual · June 2005 Page 41
Jumpers & Switch Settings
10 The settings for switch bank SC (1 through 4) determine when the pump control unit 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.
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 pump control unit must be polled at least every 15 seconds by
the Site Controller. 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 site controller.
12 Re-install the EXPMUX Pump Control CPU board.
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
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
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