New Era NE-9000 Series Programmable Peristaltic - Manual (Page 59)

New Era Pump Systems Inc.
www.SyringePump.com
Model NE-9000
Publication #1200-04 51
Foot Switch: Operates like the ‘Start/Stop’ key, whereby each falling edge (contact to ground) either
starts or stops/pauses the Pumping Program.
Foot Switch Hold: Falling edge starts the Pumping Program and the rising edge stops the Pumping
Program. With a foot switch, the Pumping Program will run while the foot switch was
held down.
Foot Switch Reversed: Operates like the ‘Start/Stop’ key, whereby each rising edge 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 effect until the Pumping Program permits it.
Start Only Reversed: Same as ‘Start Only’, but operates on the Rising edge to start the Pumping
Program.
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.
Stop Only Reversed: Same as ‘Stop Only’, but operates on the Rising edge to stop the Pumping
Program.
Pump Motor Operating (Pin 7): This output provides an external signal indicating when the pump
motor is operating. This pin is configured with the
n
setup command, or the "ROM" remote
command. When set to 0, the output is only at logic high when the motor is operating (pumping). When
set to 1, the output is logic high when the motor is operating or when the Pumping program is executing a
pause timer. Otherwise, the output is a logic low.
Pumping Direction Controls (Input: Pin 3; Output: Pin 8): Allows bi-directional control of the
pumping direction. The input pin, when activated, emulates the pumping direction key, changing the
pumping direction. This function, therefore, is only applicable where the pumping direction key would be
applicable. The function of the input pin is configured with the
aa
setup command, or the "DIN"
remote command.
When the mode is set to reciprocating pumps ("RE" setup command or "0" remote), then if the current
pumping direction is withdraw, a falling edge sets the direction to dispense. If the current pumping
direction is dispense, a rising edge sets the direction to withdraw. Otherwise, this input pin has no effect.
When the mode is set to dual pumps ("dU" setup command or "1" remote), then if the current pumping
direction is withdraw, a rising edge sets the direction to dispense. If the current pumping direction is
dispense, a falling edge sets the direction to withdraw. Otherwise, this input pin has no effect.
Dual and reciprocating pumping systems are created using 2 pumps attached with the accessory cable
CBL-TTL-1.
The output pin provides an output signal to external devices indicating the direction of pumping. A logic
low indicates withdraw, and a logic high indicates dispense. For example, this pin can be used to control
an external valve.
13.2 TTL I/O Control from the Pumping Program
Various Pumping Program functions can define how the pump reacts to levels on the TTL I/O connector
or set output levels. These are summarized in the following table: