Next Advance SP1800 - Manual (Page 50)

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SP1600/1800 Programmable Syringe Pump
Publication #1200-02 45 9/15/04
Pin # Definition Type Function
1 Vcc (5V) Reference Logic high reference. Power on indicator.
2 Operational Trigger Input
Configurable start/stop operational trigger input.
Foot Switch Falling edge: Start or stop trigger
Level Falling edge: Stop trigger
Rising edge: Start trigger
Start only Falling edge: Start trigger
Stop only Falling edge: Stop trigger
3 Pumping Direction Input Changes pumping direction according to setup
[dr:rE]
[dr:dU]
Falling edge: Infuse Withdraw
Rising edge: Withdraw Infuse
4 Event Trigger Input Event input or user definable input
5 Program Output Output Program controlled output or user definable output
6 Program Input Input Program conditional input read by the “IF” program function.
Also user definable input.
Also used by the keypad lockout function.
7 Pump Motor Operating Output [RUN.0] High: Pumping; Low: Not pumping
[RUN.1] High: Pumping or Pause timer
Low: Not pumping
8 Pumping Direction Output High: Infuse; Low: Withdraw
9 Ground (0V) Reference Logic low reference
10.1 TTL I/O Operational Controls
While the user is changing settings or configuration from the keypad, external control by the ‘Pumping
Direction’ and ‘Operational Trigger’ inputs will be ignored. These controls will also be ignored if an
alarm condition exists.
Operational Trigger (Pin 2): The input signal on this pin controls the operation of the Pumping
Program. Its functionality is user configurable. Use the ‘TR:nn’ Setup Configuration to configure this
input pin.
Each option, Foot Switch, Level Control, and Start Only, define when the Operational Trigger input is
activated. When activated, the trigger emulates the ‘Start/Stop’ key.
Foot Switch: Operates like the ‘Start/Stop’ key, whereby each falling edge (contact to ground) either
starts or stops/pauses the Pumping Program.
Level Control: Falling edge stops/pauses the Pumping Program, Rising edge starts the Pumping
Program. This configuration can be used with a contact closure timer or in an
automation setup, allowing logic level control over the operation of the pump.
Start Only: Falling edge starts the Pumping Program. This configuration only allows the starting of
the Pumping Program. This would be useful, for example, with a laboratory animal
trained to press a lever. The animal can start the Pumping Program, but repeated presses
would have no affect until the Pumping Program permits it.
Stop Only: Falling edge Stops the Pumping Program. This configuration only allows the
stopping/pausing of the Pumping Program. This would be useful, for example, with an
end of travel limit switch. Also, this switch can be used as a power on homing switch.