Watson-Marlow 101F - Manual (Page 6)

6
Tacho output
A signal is available at the Din socket which is approximately proportional to m otor speed. Pin 11 is negative and pin 3
is positive. There is approximately 5V across the pins at maximum speed.
Remote potentiometer
A r emote potentiom eter w ith a m aximum value of 5k ohm s hould be wired as shown. When using a remote
potentiometer, do not apply a voltage/current control input signal at the same time. The speed control signal will require
calibration r elative to the m inimum and m aximum s ettings of the potentiometer. Use the offset and range
potentiometers as described under calibration.
Direction
Connect remote switch between pins 5 and 13 and dis able the f ront panel r eversing control by linking pin 4 and 12 of
the 15 pin D connector.