ProMinent ProMix C, Руководство по эксплуатации

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Pr o Minent ProMix
‘S & C’ Polymer Feeder
ProMix Series S&C User Manual
2.10 Response on Loss of 4-20 mA Input
Press ENTER at 4-20mA input.
Press UP or DOWN to lin Fail State .
Displays the factory default.
Pump OFF when 4-20mA Input less than 4mA.
Press ENTER to select a different response.
Press DOWN to select a user set pump
speed on less than 4 mA.
Displays the factory default of 10%.
Press ENTER to select response & modify value.
Press DOWN and ENTER to run the pump at the last input
Value greater than 4.0mA when the measured current loop
value falls below 4.0mA.
.
If you pressed ENTER @ Pump @ 10%
You will be able to modify the 10% value.
Press RIGHT to move the underline cursor &
UP or DOWN to modify the value at the cursor.
Press EXIT to leave unchanged or ENTER
To set the new value.
Sidebar:
The feeder defines a failed 4-20mA input @ -1% which is nominally 3.85mA.
(4.0mA
– 0.01 x 16.0mA = 3.84mA)
3.85mA allows 4.0mA, a valid pump control signal some headroom prior to a fault response