Praher Plastics AQUASTAR mp6 plc, Руководство по эксплуатации

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Commissioning 12
To begin using the Aquastar the power supply has to be connected and turned on for both the
device and the inputs. (as explained in the previous chapter)
Starting sequence:
If voltage is applied to the Aquastar it approaches either the last saved position or in the case
of very first use the preset position.
Waiting for position changing:
The Aquastar stays in the last selected position.
The PLC can now select a new position at any time by applying a voltage for at least 2s at
the corresponding input. The Aquastar then approaches this position automatically.
Before a new input can be set, all inputs have to be free of voltage for at least 1 second!
If this is not the case a Position error will occur.
During this positioning the pos relay is switched off and the PLC has to guarantee
that the pump is turned off!
When the pos relay is turned on again the position has been reached.
Errors:
If the Aquastar detects any Errors it signals these to the PLC by the error relay.
This relay is turned on for a time corresponding to the error and then turned off for 1 second.
A red LED is driven at the same time as the relay. This repeats until the error is fixed and if
necessary reset.
(As explained in the table 12.1: 2s means 2 seconds on 1 second off, 3s means 3 seconds on
1 second off and so on)
Basically there are two different types of errors:
Errors which are reset automatically when the problem is fixed:
The Aquastar goes immediately on with normal operation.
Errors which have to be reset because the Aquastar goes into an errorstate:
In this case the error has to be reset by applying voltage to either ERR or FI,BW and RI
simultaneously for at least 5s and taking the voltage away after that.
The errorstate cannot be reset by turning off the power supply.
If an error occurs the Aquastar might approach a safe position. In this case the pos relay is not
activated.
The position of the Aquastar must be set again after an error every time!
This assures that the position of the PLC is the same as the position of the Aquastar!