Watson-Marlow 505Du User Manual

Page 20

Setup

At the Main menu, Step to SETUP, press Enter and a choice will be offered.
Step to the required menu item and press Enter.

This menu item will identify the version of the internal software. This information
may be requested if you call for technical support.

You are able to turn the audible signal off using this menu item. The default
condition is on.

This selects the language used throughout the menu system. The choice is
English, German or French.

This feature allows you to select an analogue control signal that is not listed. It
has been explained fully in the AUTO-CONTROL section.

When you are using a number of pumps under RS232 control, each individual
pump will require unique identification. To change the number, press Enter then

∧

∨

to select a new number, then press Enter.

This is the speed of signal transmission. Its setting will have to match the rest of
the system. The factory default is 9600.

This function allows the pump's signal conditioner to be matched to the control
signal if they do not coincide. The reason for this may be line losses or mis-
calibration of either the pump or the signal source.

The process signal (or suitable signal from another source) can be used in the
calibration procedure providing that it meets these requirements: For voltage
modes, a stable, variable direct current voltage source (for example a laboratory
power supply having a source resistance of 5kohm or less) can be used.

You will be asked to apply zero, 20% and the maximum voltage or current that
has been selected for the control signal.

When using a current signal, ensure that the link is connected between pins 3
and 16. For voltage signals, ensure there is no link.

Step to TRIM, then press Enter

T R I M S

A N A L O G U E

C O N T R O L

C I R C U I T

Explanatory message

A P P L Y

0 M A

S I G N A L

Apply 0mA across pins 4 to 7 or short the

T H E N

P R E S S

E N T E R

wires from pin 4 to pin 17, then Enter

A P P L Y

+ 2 0 . 0 0 M A

Apply 20mA across pin 14+ and pin 17-

ROM

Beep

Lang

Signal

Pump

Baud

Trim