SuperNova PD500 PID Process & Temperature Controllers
Instruction Manual
37
Transmit & Remote Group (G.TRS)
The Transmit and Remote Group is used to configure
the 4-20 mA retransmission output as well as the
4-20 mA remote SV input.
Retransmission Type (RET.T)
The 4-20 mA retransmit output can be based on the
process variable (PV), set value (SV), or manipulated
PID output value (MV). This parameter sets which of
the three values will be the basis of the retransmitted
proportional 4-20 mA RET output.
Retransmission Scale High (T-SH)
and Low (T-SL)
Retransmission Scale High and Low (T-SH, T-SL) are
used to scale the 4-20 mA retransmit output.
The RET output will transmit 20 mA at the value
entered for T-SH, and 4 mA at the value entered for
T-SL. The 4-20 mA output will linearly scale between
the high and low range.
The high and low scale values must be within the full
range scale set for the input.
Retransmit Adjustment High (T-AH)
and Low (T-AL)
The Retransmit Adjustment High (T-AH) and
Retransmit Adjustment Low (T-AL) parameters are
used to recalibrate the 4-20 mA retransmit output.
The output may be calibrated by changing the high
and low scale PV, SV, or MV values within ±5% of the
full scale of the value.
Remote input Operation (REM)
Analog signals from 4 -20 mA (or 1-5 V) can be input
to change the set value (SV) remotely.
To accept a 4-20
mA input, connect 250 Ω resistor in
parallel to the REM input (a 0.1% high-precision
resistor is recommended) and the high and low
voltage input ranges of the remote input should be set
to 1.000 and 5.000 VDC.
Remote Input Enable (REM.E)
Units with the remote input option can turn on this
input by setting the Remote Input Enable (REM.E)
parameter to ON.
When REM.E is turned on, the value remotely input to
the REM terminals is used as the SV regardless of
the set value number selected in the SV.NO
parameter.
Remote Input Voltage High (REM.H)
and Low (REM.L)
Set the voltage maximum and minimum voltage range
for the REM input.
Remote Input Scale High (R-SH)
and Low (R-SL)
The REM input will set the SV to the Remote Input
Scale High (R-SH) value when the high input range is
detected, and to the Remote Input Scale Low (R-SL)
value when the low input range is detected. The
remove input SV range will linearly scale between the
high and low range values.
The high and low scale values must be within the
voltage high and low range set for the REM input.
Remote Input Adjustment High
(R.AH) and Low (R.AL)
The Remote Input Adjustment High (R.AH) and
Remote Input Adjustment High (R.SL) parameters are
used to recalibrate the 4-20 mA remote SV input.
The input may be calibrated by changing the high and
low scale of the input values within ±5% of the full
scale of the remote input voltage range.