Watson-Marlow 120U/D1 - Manual (Page 26)

Watson-Marlow 120U IP31 pumps: operating instructions 12
2.6.7 Remote stop/start
when AUTO has been
pressed
Fit a switch between pins 8 and 13.
OR:
Apply a TTL logic signal to pin 8, ground to pin 12.
See 2.6.1 Remote stop/start for remote stop/start
instructions if AUTO has not been pressed.
2.6.8 Speed: analogue
input
When AUTO has been pressed, pump speed can be
controlled remotely by an analogue process signal
within the range 0-10V; or 4-20mA. The pump
provides an increasing flow rate for a rising control
signal.
Voltage signal
0-10VDC. Input impedance: 24k Ω.
Connect a voltage source: negative terminal to pin
10; positive terminal to pin 2.
Current signal
4-20mA. Input resistance: 250 Ω.
Fit a link between pins 1 and 11.
Connect a current source: negative terminal to pin
10; positive terminal to pin 2.