19
m-120-en-02
Function comparison, models 101U and 120U
Function
101U
120U
Analogue input
0-30mA and 0-30V
4-20mA and 0-10V
Range and off-set
trimming
possible
can only set the maximum speed
Signal inversion
possible
not possible
Tacho output
+5V and –5V at maximum
speed
5V at maximum allowed speed
Input impedance
255Ω
250Ω
Max speed options
2 rpm or 32 rpm,
model-dependant
single speed range, pumphead-dependant
Speed increments
10% or 1% increments
0.1 rpm in manual mode and 0.01 rpm in
analogue mode
Analogue control
2,000:1 control ratio
20,000:1 control ratio
2.2
Switching the pump on
Thepump ispowered by a dedicated 24V externalDC power supply unitwhich issupplied with thepump.
Plug thepower supply’soutputconnector into thepower socketon therear of thepump.
