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Installation Wiring
Section 5
Page 37
I/O – GPI I/O (SSL ref. 907XA)
The GPI I/O Card contains 60 circuits of opto-isolated input and 60 circuits of relay-closure output. Inputs are
accessed by 25-pin D-type male connectors and outputs by 25-pin D-type female connectors; mating connector
kits are available to order.
Both the input and the output circuits are fully isolated from the processor electronics. On output connectors,
there is a protected source of +15V available an, a 0V reference is available on input connectors.
The input and output signals can be either latching or momentary; this is individually assigned in software using
the touch screen. When set to momentary, the input signal duration needs to be greater than 50mS.
Note: When used for track arming and tally, the tally must return to the same number input as the output signal.(ie.
the tally for GPI out 1 will be on GPI in 1).
The switch closure is by DIL relay. Contact rating is 100Vdc, 125Vac, 100mA max. Do not use the output contacts
to directly switch capacitive or reactive loads; always use an external relay with a suitable contact rating.
The signal input requires AC or DC voltage between 4V and 30V. The current drawn is approximately 10mA.
GPI in
Input A
Input B
GPI Output circuit
GPI Input circuit
Contact A
Contact B