If multiple instruments need a ground reference the four positions of TB2 can serve as those ground points (assuming the JP17-JP20) jumpers are intact. If more than four grounding screws are needed then a custom wire from TB2 to a separate terminal block can allow for more grounding screw positions.
Brand：HONEYWELL Model number：51401551-301
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: USA
Price: Please contact us Product weight：0.22kg
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51401551-301 Honeywell Controller module Brand new
PV and SP Processing
The SVP_REGCTL block accepts the following inputs.
l Process Variables (PV1 and PV2) from the SVP_AI channel based on the PVSOURCE
configuration.
l Set Point value from the AUXILIARY function blocks that reside in the C300 - 20mS CEE
Controller when the MODE is set to 'Cascade.'
Process Variable (PV) Processing – fetches the input values (PV1 and PV2) from the SVP_AI
channel based on the status (PV1STS and PV2STS) of the input values and gives the output PV
value. The inputs PV1 and PV2 act based on the selection of preferred PV source (PREFPVSRC)
parameter.
Set Point (SP) Processing – obtains the SP value from the AUXILIARY function blocks when the
MODE is set to 'Cascade' and processes it to perform SP limit checking, SP value must be within the
engineering unit range defined by PVEUHI and PVEULO.
10.25.2 PV handling when PVSTS is BAD
1. If the PVxSTS (x=1, 2) is set to 'BAD',
l the PVSTSFL.BAD is set to 'ON' in the SVP_REGCTL channel,
l MODE is set to 'MAN' in the SVP_AO channel.
l the calculated variable (CV) is set to 'NaN' to invoke Bad Control processing.
l the BADCTLFL is set to 'High.'
NOTE
l When the PV is 'Bad,' AO Mode change is prohibited until PVSTS returns to 'Normal'
if the MODE was in 'Shed.'
l When the PV returns to 'Normal,' the channel remains in 'Manual' mode if the
MODE was in 'Shed.' You must manually change the MODE to 'Normal.'
1. If the PVxSTS (x=1, 2) is set to 'Normal',
l the PV value is normal in SVP_AI channel, and
l the PVSTSFL.NORM is set to 'ON' in the SVP_REGCTL channel.
.
.
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