Watson-Marlow 120U/D1 User Manual
Page 22
Watson-Marlow 120U IP31 pumps: operating instructions
8
Pin no
101U
401U
120U
1
Analogue input current
resistor (link to 0V)
Analogue input current
resistor
Analogue voltage/current
signal selection
2
Analogue speed input
Analogue speed input (+10V)
Analogue speed input
(voltage/current)
3
Tacho output (0-5VDC)
Supply +5V
Ground 0V (analogue)
4
Remote direction enable
Remote direction (reverse)
Remote direction enable
5
Remote direction control
Remote direction (forwards)
Remote direction selection
(CW/CCW)
6
Remote auto/man enable
Linked for current offset
For future use
7
Remote auto/man control
Linked for current offset
Remote auto/man selection
8
Remote stop
Ground 0V
Remote stop
9
Tacho output (0-5VDC)
Analogue control (+1V)
Tacho output (0-5VDC)
10
Ground 0V
Supply +18V
Ground 0V (analogue)
11
Ground 0V
Remote auto/man control
Ground 0V (digital)
12
Ground 0V
Not connected
Ground 0V (digital)
13
Supply +5V
Not connected
Supply +5V
14
Supply -5V
Not connected
Alarm output (5V TTL)
15
Supply +12V
Ground 0V
Supply +12V
Pin allocations, models 101U, 401U and 120U