Logic - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

5.10.4 Logic

Tag Description
MBR Tank
B-601
Blower
MBR Tank
B-602
Blower
Permeate
P-701
Transfer Pump
newterra O&M Manual
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Control Logic
The membrane tank blower will be
ON when the System is in Run. And
the MBR 1 is enabled
The membrane tank blower will be
ON when the System is in Run. And
the MBR 2 is enabled
The permeate pump will be ON when
MBR-1 is Enabled & level switch
LSH-601 = Active & LT-501 >
LT501-PERM-SP
The Pump will perform a
PULL/RELAX Cycle. The pump will
be ON for the duration specified by
the PERM-PULL-TIME setpoint and
then be OFF for the duration of the
RELAX-TIME setpoint. This will
generate one PULL/RELAX Cycle.
The VFD Speed of the pump will
operate based on the following:
In FLOW MODE:
The VFD Speed will operate based
on a PID loop to maintain the
flowrate setpoint FT-701-SP.
IF the vacuum transmitter VT-701 > -
0.25 bar then the pump will switch to
VAC MODE.
IF the level transmitter LT-301 >
FLUX-SP, the pump will run via PID
loop to maintain a high flow setpoint
FT-701-HFSP
In VAC MODE:
The VFD Speed will operate based
on a PID loop to maintain the
vacuum setpoint VT-701-SP.
IF the level transmitter LT-301 >
FLUX-SP, the pump will run via PID
loop to maintain a high flow setpoint
VT-701-HFSP
P-701 will be OFF if P-501 is OFF.
1291 California Avenue, Brockville, ON K6V 5W3
(800) 420-4056 / www.newterra.com
Alarm Output
Interactions Type
Discrete
MBR-1 Disabled
Discrete
MBR-2 Disabled
VFDA-701:
Communication
Pump Will be Off
newterra ltd.
Hour
Meter
Y
Y
Y
66