6. Cleaning
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6.6 Dosing of detergent and / or water intake by flow metering
6.6.1 General information and first steps
As a rule, the functions
- dosing of cleaning agent or disinfectant' is time-controlled and / or
- water intake are optionally time- or level-controlled.
In certain applications*, however, it may be advantageous to control these functions
'quantity-controlled'. Detergent or water are flowing until the entered litre quantity is
achieved.
Quantity-based dosing into the feed container is not supported!
* e.g. strongly fluctuating water pressure or
for the monitoring of the detergent quantity
For the quantity-controlled detergent addition the following is required:
- WELBA I/O extension module ESIO-001
- for detergent dosing:
2 pieces of flow sensors (pulse counter) for alkaline and acid detergent
and / or
- for water intake:
2 pieces of flow sensors (pulse counters) for cold and warm water
Proceed as follows:
Connect the flow sensors to the first four digital inputs (D1 to D4) of the I/O expan-
sion module. For connection, see the documentation of the I/O expansion module.
As only 4 flow sensors can be connected, only a maximum of 4 of the following
functions can be dosed in a quantity-controlled manner.
- alkaline detergent
- acidic detergent
- disinfectant
- cold water
- warm water
The remaining function must be dosed time- or level-controlled
.
If a cleaning agent or disinfectant is to be dosed time-controlled, it must be set to
'0' in the corresponding L-parameter [L101 to L103]!
Activate the I/O expansion module in parameter [A74].
Assign the connected flow sensors to the corresponding digital inputs using pa-
rameters [A29..A32]. (Selection 38 to 42)
Enter the number of pulses per litre in each of the parameters [L121..L125]. This
is usually given in the documentation of the flow sensors.
L121 <=> alkaline detergent
L122 <=> acidic detergent
L123 <=> disinfectant
L124 <=> cold water
L125 <=> warm water
If the pulse numbers are unknown, they must be determined - as described in
section 6.6.4.
Digital inputs
NOTICE
