Liquid Dosing Control Manual
9.17.150 rev A – September 2020
Page
24
of
34
4.1.2 Ratio Dosing
Refer to section 1.2.8 on how to determine the input setting (Slave Factor)
Write determined factor
(setpoint internally calculated based on external input signal and factor)
-
Write value <_> to parameter 139 – Slave Factor
(0 – 100%)
Read instrument internal calculated setpoint
- Read parameter 9 – Setpoint
(Measure 0 – 32000)
Step DDE ProPar Name
Execute Value
Remark
Ratio Dosing
1
139
33/1
Slave Factor
write
0…500
0-500%
2
9
1/1
Setpoint
read
Analog Input * Slave Factor
4.1.3 Batch Dosing
Ensure Batch Mode is enabled.
- Write value 2 to parameter 130 – Counter Mode
(mode Up to Limit – Batch)
Ensure no liquid flow
- Write value 0 to parameter 206 – Flow Setpoint
(Setpoint)
or
- Write value 0 to parameter 9 – Setpoint
(Setpoint)
Reset Batch Counter to ensure no conflict occurs
- Write value 3 to parameter 114 – Reset
(Reset counter)
Define Batch size
- Write value <_> to parameter 124 – Counter Limit
(Batch size)
Start liquid flow
- Write value <___> to parameter 206 – Flow Setpoint
(Setpoint)
or
- Write value <___> to parameter 9 – Setpoint
(Setpoint)
Liquid will start flowing until the batch size is reached.
A higher setpoint value can increase the speed of the dose.
