EWS UFS8000, Руководство по эксплуатации

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UFS8000 Components 19
6.1.6. Permeate dump valve
In the case of the “Permeate dump valve” all that has to be
entered, in the inventory, is the relay output it is connected to.
A security switch can be activated. This can be linked to one
if the available inputs, and it can be set if the switch is
“normally closed” or “normally opened”.
For more information, see § 5.1 “Inventory” on page 12.
6.2. Pumps
The pumps may be connected only to the relay outputs (OUTx). Furthermore, a circuit breaker can be
activated for the particular pump and in the case of the feed pump and the backwash pump, an
analogue output can also be activated to, for example, regulate the control of the pump, by means of a
frequency regulator § 5.1 “Inventory” on page 12) per process step, if a pump is switched on or off. If
an analogue output has been activated, then in the settings of the processes (see § 5.1 “Inventory” on
page 12) it can be set to what percentage of the current range (0-20mA or 4-20mA) the output current
must be set to. If a percentage of 0% is entered, then the relevant relay output will be switched off; at
a different value the relay output is also activated.
This output in a frequency converter can, for instance, be used as a “target value”. The flow or
pressure that must be regulated can, via the “recorder function”, also be directed to the frequency
regulator.
There are settings in addition to the inventory settings for the backwash pump and the dosage pump.
6.2.1. Feed pump
In the case of the “Feed pump” all that has to be
entered, in the inventory, is the relay output it is connected to.
A security switch can be activated. This can be linked to one
if the available inputs, and it can be set if the switch is
“normally closed” or “normally opened”.
An analogue output can furthermore be selected with which,
for example, a frequency regulator can be set.
For more information, see § 5.1 “Inventory” on page 12.