Agilent Technologies TwisTorr 74FS AG Rack Mode D'emploi page 215

P1 – Input
Figure 9
All the logic input to the controller have to be connected to P1
mating connector. The provided P1 mating connector is
equipped with pin 3 and pin 8 shorted to enable the pump start.
The connections should be done with AWG 24, (0.24 mm2) or
smaller wire. The following table describes the signals available
on the connector.
Tab. 3
Pins Name
1-com Start/Stop
3-com Interlock
4-com System
Override
5-com Soft Start
TwisTorr 74FS AG Rack Controller User Manual / 87-901-055-01
P1 input connector
Description
Contact closed = Start
Contact open = Stop
Contact closed = Active
Contact open = Inactive
If active allows the pump running, if
inactive stops the pump.
Contact closed
Contact open
If the contact is open, it allows the
pump running; if the contact is
closed, it stops the pump and all the
others connected devices (Fan, Vent).
Contact closed= Active
Contact open= Inactive
If active before the start command
activates the soft start procedure. To
be used only at first pump run-up.
Technical Information
Controller Connection
Electrical Note
Optically isolated Active only in
Vlow, max = 10v Remote Mode
Imax = 5mA operation
Imin (on) = 2mA
Optically isolated Active in all
Vlow, max = 10v modes
Imax = 5mA
Imin (on) = 2mA
Optically isolated Active in all
Vlow, max = 10v modes
Imax = 5mA
Imin (on) = 2mA
Optically isolated Active only in
Vlow, max = 10v Remote Mode
Imax = 5mA operation, and
Imin (on) = 2mA in STOP
status.
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