Watson-Marlow 520Du - Manual (Page 10)

Watson-Marlow 520Du User Manual 10
8 Pump specifications
A nameplate is fixed to the rear of the pump. It contains manufacturer and contact
details, product reference number, serial number and model details.
520Du, IP31 model
This pump can be controlled from the keypad or remotely. It features:
Manual control
Speed adjustment; run and stop; direction control; “max” key for rapid prim-
ing.
Remote control
The pump can be digitally controlled with a contact closure or logic input signal
to operate the pump.
Analogue control
The pump speed can be controlled through an analogue signal input in the
ranges 0-10V or 4-20mA. Scaling can be controlled similarly using Analogue
signal input 2.
Outputs
A 0-10V, 4-20mA or 0-1258Hz output signal provides feedback of the pump
speed. There are four digital status outputs which can be configured in software
for a variety of pump parameters.
MemoDose
Allows precise repeat dosing. Stores in memory a pulse count from the motor.
This count is repeated each time START is pressed to provide a single-shot
dose.
Calibration
Full calibration, plus default figures for a range of pumpheads and tubes.
Calibration dose facility.
RS232 serial communications
Full pump control from a PC or other controller with the ability to network up to
16 pumps.