New Era NE-9000 Series Programmable Peristaltic - Manual (Page 58)

New Era Pump Systems Inc.
www.SyringePump.com
Model NE-9000
Publication #1200-04 50
Falling edge refers to a logic high to logic low transition. Rising edge refers to a logic low to a logic high
transition. To guarantee recognition of logic levels, voltages on the input lines must be within the
following ranges:
TTL logic low (0): 0 to 1.5 V
logic high (1): 3.5 to 5.25 V
The Vcc and Ground pins, pins 1 and 9, are for logic reference only. To assure proper voltage levels, the
Ground pin should always be connected to the signal ground of a sensing or controlling device that is
attached to any other pin on the TTL I/O connector. The Vcc pin should not be used to source current.
The TTL I/O pins are defined as follows:
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
3 Pumping Direction Input Changes pumping direction according to setup
[dr:rE]
[dr:dU]
Falling edge: Dispense Withdraw
Rising edge: Withdraw Dispense
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: Dispense; Low: Withdraw
9 Ground (0V) Reference Logic low reference
13.1 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 (See Section 10.7, TTL I/O Operational Trigger Configuration).
Each option defines when the Operational Trigger input is activated. When activated, the trigger emulates
the ‘Start/Stop’ key: