Gasboy TopKAT Fuel Management System Installation - Manual (Page 92)

Mechanical PCU Option Pump Control EXPMUX CPU Board
Page 86 MDE-4319E TopKAT™ Fuel Management System Installation Manual · August 2008
10 In switch bank SC, between 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 TopKAT. If it fails to sense a poll at that time, it turns off all relays. 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.
The table below gives the switch settings for SC-5 through SC-8.
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
11 Reinstall the EXPMUX Pump Control CPU board.