WattMaster WCC II - Manual (Page 219)

Section 5: Installation Guide
WCC II Operator’s Guide
Operator Interfaces 5-17
Binary Input Board
The Binary Input Module is an optional integrated circuit board
which can interface with the SAT II controller to allow it to monitor
the status of remote mounted binary (on/off) devices such as switch
closures, air fl ow switches, etc. One binary input board enables the
SAT II controller to monitor up to 8 binary inputs, and 2 binary
input boards can be used with 1 SAT II controller for a total of 16
binary inputs per SAT II controller.
The SAT II controller comes standard with 16 small toggle switches
on its front panel labeled L1-L16 which are in effect manually
controlled binary inputs. The ECC/WCC II monitors the on/off
status of these switches and can control and/or alarm based on the
position of these switches. The binary input module allows the
toggle switches to be replaced with a terminal strip which accepts
wiring for remote mounted binary input devices.
The SAT II controller has two sets of eight small toggle switches
on its front panel labeled L1-L16. Switches L1-L8 are housed
together in one module, and switches L9-L16 are housed together
in another module. One module of switches is removed for each
binary input board and is replaced with a ribbon cable which
connects the binary input board to the SAT II controller. The binary
devices to be monitored are then wired to the terminal strip of the
binary input board. The binary input board requires a 24 VAC
power source.