Watson Marlow Pumps 504Du, Руководство пользователя

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7
nST Stop pump number n
nRC Change rotation direction for pump n
nRR Set clockwise direction for pump n
nRL Set anti-clockwise direction for pump n
nDOxxxxx,yyy Set dose for pump number n in tachometer pulses (note 3)
nRS Show status for pump number n (note 4)
nZY Show status if pump n STARTed
1
or STOPped
0
nTC Clear tachometer counter
nRT Read tachometer counter
For writing to pump number n display
nCA Clear existing display; followed by:
nCH “Home” cursor; followed by;
nW{text line 1}~{text line 2}@ ( @ = terminator )
Notes on control codes
1 n = pump number set in
Setup
. For the command to operate on all networked pumps simultaneously, use # before the command.
2 There are 1280 tacho pulse per revolution on the 220rpm version and 3200 tacho pulse per revolution on the 55rpm version.
3 nDOxxxxxxxx where xxxxxxxx is any integer and is the target dose in tacho pulses. This can be extended to nDOxxxxxxxx,yyy where yyy
is a “kick back” in tacho pulses with a limit of 255 (about 1/12 of a revolution on a 55rpm drive or a 1/5 of a revolution on the 220rpm drive).
4 A show status command will prompt the 504Du to return a text string of the following layout:
[pump type] [ml/rev] [pumphead] [tube size] [speed] [cw/ccw] [P/N] [pump number] [tacho count as a single integer] [stopped/running,
0 /1] [! = delimiter]
eg 504Du 0.7 505l 1.6mm 53.5 CW P/N 1 157810 1 !
5 All networked pumps with the same n will respond to the same command.
6 There should be at least 10mS between consecutive commands
7 When using the # to address all pumps, ensure that it will not generate a reply, eg nSS, the result will be unpredictable.
This is a typical short program for pump number 2:
OPEN “COM1:9600,N,8,2,CDO,CSO,DSO,OP10000” FOR RANDOM AS #1
PRINT #1, “2SP220” + CHR$(13)
DELAY (command depends on language being used)
PRINT #1, “2GO” + CHR$(13)
DELAY 5000
PRINT #1, “2ST” + CHR$(13)
CLOSE #1.
Calibration procedure
Calibration of the 504Du is based on informing the pump under Set-up of the pumphead and tubing which are to be used. Alternatively a
calibration dose can be used. The calibration dose will run for a maximum of 4 minutes, but can be stopped at any time up to 4 minutes. The
longer the calibration dose the more accurate the calibration. Entering into the pump the physical volume (ml) or mass (sg) to complete the
procedure and will allow the pump to take into account ambient conditions and also the viscosity of the fluid.
Setup
Press
Step
to move between options. Further options are signified by either < or > at the extreme right of the display. Press
Enter
to confirm
settings.
ROM -
provides user with software identification.
Beep -
Audible signal on/off.
Lang -
English, French or German
Signal
-
Step
to the desired process signal for analogue control and press
Enter
. Options available are 4-20mA, 0-10mA, 0-20mA, 0-5V,
0-10V. These signal ranges correspond to 0-200rpm speed control. A confirmation screen will verify settings chosen. If the signal type required
is not shown then use the “
program
“ option. The pump is controllable by an analogue process signal of up to 30V or 32mA. The pump will
provide an increasing flow rate for a rising control signal (non-inverted response) or an increasing flow rate for a falling control signal (inverted
response).