Agilent Technologies Turbo-V 1000 ICE Notice De Mode D'emploi page 215

In the presence of both S1 and S2 signals, the one that reaches the processor
NOTE
first is executed.
Pin 3-8 must be shorted to allow the Turbo-V 1000 ICE pump to start if no
NOTE
interlock contact is connected. If after starting the pump, the interlock contact
opens, it has no effect on the operation and the pump continues to turn.
The following figure shows a typical contact logic input connection
and the related simplified circuit of the controller.
Figure 10
Turbo-V 1000 ICE Controller User Manual / 87-900-905-01 (M)
Typical logic input connection
Technical Information
Interconnections
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