Watson-Marlow qdos 20, Инструкция по эксплуатации

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16.4.5.2 Remote, and Universal and Un models
Remote fluid recovery must be operated in following sequence:
Procedure
1. Send remote stop signal (apply 5 - 24 volts to input pin 1).
2. Apply 5 - 24 volt to pin 5 of pump input.
3. Apply 4-20 mA to analog input. (Pump will run in reverse at speed proportional to analog signal)
4. Remove remote stop signal.
5. Apply remote stop signal when enough fluid recovered.
6. Remove voltage at pin 5 of pump inputs.
7. Remove remote stop signal when ready to run forwards again.
Reverse process can be used to switch the function off.
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When function is enabled, pump operation can be reversed in analog 4-20 mA mode by applying
minimum 5 V to maximum 24 V to pin 5 of pump input.
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Pump will operate at reversed set speed proportional to 4-20 mA input applied to pin 3.
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Operating method allows for fluid recovery from delivery line.
16.5 Pump status overview
16.5.1 Screen Icons (Models: Manual, PROFIBUS, Universal,
Un)
The pump displays a RED stop icon when it is in a manually stopped condition. In this state the
pump will not start unless the START key is pressed
The pump displays a RED PAUSE icon when it is receiving a remote stop input whilst in a standby
condition. The pump is placed in a standby condition by pressing the START key in manual
mode, or by selecting Analog mode.
In this state the pump will respond to a change in state of the start/stop input and may start
automatically when it receives a control signal.
When the pump is running it displays a turning icon to indicate a pumping state
16 OPERATION 174