Watson-Marlow 505Di - Manual (Page 8)

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If the motor is dosing, it has no effect until the next dose. Typically four further doses are required to achieve maximum
dose accuracy. Then the pump will have converged on the average motor overrun value.
Set-up
ROM - provides user with software identification
Date/Time - Set during manufacture but can be reset to user requirements.
Beep - Audible signal on/off.
Ramp - Rate of acceleration/deceleration of the pump to/from maximum set speed at the beginning/end of a dose. 0
setting signifies no acceleration delay to maximum speed, 5 signifies the longest acceleration delay to maximum speed.
The pump default setting is 2.
Drip - Brief reversal of the motor on dose completion ensures no extra drips of fluid are dispensed. 0 means no reverse
and 5 means maximum reverse.
Baud - Speed of signal transmission. Default setting 9600, range of setting include 1200, 2400, 4800, 9600.
Auxiliary - Monitor the pump dosing or motor state/direction of rotation using 2 high/low auxiliary signals outputted via
the pumps 25D connector. Auxiliary signals can be used, for example, to command a turntable or conveyor to move
when a dose has been completed.
Line 1 can be set to change state every time the motor runs, or only when the motor runs to dispense a dose. The
signal can be set high or low when the motor runs. Line 2 changes state when the pump direction is changed. The
screens allow the signal to be set high or low when the output shaft rotates clockwise.
Pump - When under RS232 control each individual pump must be identified. Select a number from 1-16.
Default - Press Enter at Yes to restore factory defaults.
Autostart - If set to On, when operating in Manual mode only, Autostart will allow the pump to restart pumping
automatically after power-up following a mains supply interruption. If set to off the pump will restart and return to the Main
Menu.
Remote control
Never apply mains voltage across pins on the 25D socket. Up to 5V TTL may be applied to pins 7
and 5, but do not apply voltage across any other pins. Permanent damage not covered by warranty
may result.
Pause dose/ Remote stop start
This function will pause a dose on for as long as a remote switch remains closed then allows the dose to continue when
the switch is opened. Under Manual mode it will also act as a remote stop/start. Connect remote switch as in diagram.
Open to run pump, close to pause or stop pump.
Start Dose
A Watson-Marlow footswitch or handswitch can be used to start the dose. If not supplied by Watson-Marlow then select
"Other" in the pumps software. Use instantaneous contacts only.