GE GFK-0787B Block Wiring for 32-Circuit Sink Block in an Input Group, DC Sink Block IC660BBD025

8

Input Wiring (continued)

Block Wiring for 32-Circuit Sink Block in an Input Group

DC Sink Block IC660BBD025

If single sensor, it must also be
wired to corresponding point on
two other input blocks
22V to 30V DC	S1
	S2
Genius Bus
Connections	SHLD IN
	SHLD OUT
	+5V
	DC+
	DC+
	DC+
Device #1	DC+
	10
	12
Required at each input (for Input	14
Autotesting). 1N5400 or equivalent.	16
	18
	20
	22
Output 16	24
	26
If group inputs are configured for autotesting, circuit 16 must be used as an output	28
If no autotesting is to be done on this group of inputs, the input devices must not be wired to	30
circuit 16. They must be wired to the power source instead.	32
If group uses single sensors, point 16 must also be wired to corresponding point on two	34
other input blocks	36
Zener diode required at each powerfeed output (for Input Autotesting). 1N5400 or equivalent.
	38
	40
	42 DC±
Device #32	DC±
	44 DC±
	DC±
	46 DC±
OVDC
Connection if no points on the	Ground
block are to be autotested
(must disconnect output 16).

HIn three-block input group, each block is connected to one bus of three.

HIf redundant power supplies are to be used, they should be diode ªORedº power supplies providing common power to all blocks in a group. Different groups may use different power sources.

GFK-0787B Chapter 8 Installation Information 8-9