126
Using the Transfer Output Section 4-14
When used as a control output, 3.7 mA will be output for 0% and 20.3 mA
will be output for 100% so that the actuator is controlled at 0% or 100%.
(3) When the set point is selected, remote SP will be output while the Remote
SP Mode is set in the SP Mode parameter.
(4) This setting will be ignored for position-proportional models.
(5) This setting will be ignored for standard control or for position-proportion-
al models.
(6) Displayed for position-proportional models only when there is a potenti-
ometer input.
Transfer Scaling • Reverse scaling is possible by setting the Transfer Output Lower Limit
parameter larger than the Transfer Output Upper Limit parameter. If the
Transfer Output Lower Limit and Transfer Output Upper Limit parameters
are set to the same value when 4 to 20 mA is set, the transfer output will
be output continuously at 0% (4 mA).
• If the SP, SP during SP ramp, or PV is selected, the Transfer Output
Lower Limit and Transfer Output Upper Limit parameters will be forcibly
initialized to the respective upper and lower setting limits for changes in
the upper and lower limits of the SP limiter and the temperature unit.
If the MV for heating or MV for cooling is selected, the Transfer Output
Lower Limit and Transfer Output Upper Limit parameters will be initialized
to 100.0 and 0.0, respectively, when a switch is made between standard
control and heating/cooling control using the Standard or Heating/Cooling
parameter.
• The output current when the linear current type is set to 4 to 20 mA, the
transfer output upper limit is set to 90.0, and the transfer output lower limit
is set to 10.0 is shown in the following graph.
• For scaling from 0.0% to 100.0%, the output for −5.0 to 0.0 will be the
same value as for 0.0%, and the output for 100.0 to 105.0 will be the
same value as for 100.0%
20.3
20
4
3.7
0
100
Output current (mA)
Transfer output value
Control output
MV (%)
(The above graph is for when the linear current output is set to 4 to 20 mA.)
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