Ttl i/o operational controls – New Era NE-1000 Multi-Phaser Programmable Syringe User Manual

Page 48

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New Era Pump Systems Inc.

www.SyringePump.com

Model NE-1000 Multi-Phaser™

Publication #1200-01

43

08/01/14

Pin #

Definition

Type

Function

1

Vcc (5V)

Reference

Logic high reference. Power on indicator.

2

Operational Trigger

Input

Configurable start/stop operational trigger input.

[Ft] Foot Switch

Falling edge: Start or stop trigger

[FH] Foot Switch Hold

Falling edge: Start trigger

Rising edge: Stop trigger

[F2] Foot Switch Reverse Rising edge: Start or stop trigger
[LE] Level

Falling edge: Stop trigger

Rising edge: Start trigger

[St] Start only

Falling edge: Start trigger

[t2] Start only Reverse

Rising edge: Start trigger

[SP] Stop only

Falling edge: Stop trigger

[P2] Stop only Reverse

Rising edge: Stop trigger

[rL] Start on low level

Low level:

Start trigger

[rH] Start on high level

High level:

Start trigger

[SL] Stop on low level

Low level:

Stop trigger

[SH] Stop on high level

High level:

Stop trigger

[OF] Trigger off (disabled)
[Et] Program function: Redirects stop trigger to Event trap

[bt] Program function: Redirects ‘Stop’ key to Event trap

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: Pumping Programmed stopped or paused

8

Pumping Direction

Output

High: Infuse; Low: Withdraw

9

Ground (0V)

Reference

Logic low reference

11.1

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 Default Configuration to configure this input pin
(See Section 8.4, TTL I/O Operational Trigger Default Configuration).

Each option defines 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.

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.

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