Gasboy Site Controller III Start-Up - Manual (Page 47)

MDE-4375 CFN Series Site Controller III Start-Up Manual · June 2005 Page 35
Jumpers & Switch Settings
5 – Jumpers & Switch Settings
This section covers the jumper and switch settings for the various components of your Site
Controller III system.
Site Controller COMM CPU Printed Circuit Board
Figure 5-1: SC III Comm CPU Board
Jumpers, K3 to K12
Jumper Function Setting
K3 AC power fail sense 2 - 3 to enable
1 - 2 to disable
K4 AC watchdog timer 1 - 2 to enable
K5 SC - Comm CPU (testing only) 1 - 2 to reset
K6 RS-485 loop 1, 2 to 4 wire 2 - 3 for 4 wire
1 - 2 for 2 wire
K7 RS-485 loop 2, 2 to 4 wire 2 - 3 for 4 wire
1 - 2 for 2 wire
It is important that the jumpers and switch settings be set properly to ensure correct
operation.
IMPORTANT