2-6 Installation & Wiring
Controller Input Wiring (cont’d)
Figure 7—Controller Input Wiring (See Figures 5 & 6 for Terminal Block Locations)
Sourcing Devices
(+VDC is being switched)
Sinking Devices
(DC common is being switched)
Input Wiring Guidelines
•
Voltage from TB 2 will be the same as the voltage supplied to the controller.
•
Each input powered from TB 2 will draw 11 mA at 24 VDC. TB 2 is fused at 1/4 amp.
•
Inputs will operate with voltages from 10 to 30 VDC.
•
An external power supply can be used instead of TB 2 to power inputs.
•
A combination of mechanical and solid state devices can be used.
•
TB 1 can be wired for sourcing while TB 3 is wired for sinking, and vice versa.
Term.
Function
1-8
Channel Enable
9-13
Program Select
14
Shift Register Clear
15
Keypad Disable
16
Shift Register Input
-
-
-
-