User Manual

48-7009-E 6-17
■ Primary control operating amount
SEt04
CNt
Setting content
Initial value
11
MV1
MLL 1 to MLH 1 (%)
0.0
The screen is for displaying the operating amount for the primary control.
The operating amount cannot be set for the normal control.
The operating amount can be set only when the control mode is set to manual.
■ Primary control output gain setting
SEt04
CNt
Setting content
Initial value
12
MV1G
0.0 to 1000.0 (%)
100.0
The operating amount (MV 1) for the primary control is multiplied by a compensation value.
[Operating amount for the primary control] = [Operating amount for the primary control before compensation] × [Primary
control output gain setting]
Note A change of the output gain setting may result in no provision of best suited PID parameter in AT.
Note Each limiter is output with a high priority, when the following is set: the primary control operating amount limiter upper limit
setting or primary control operating amount limiter lower limit setting.
Change of the output amount when the output gain setting is set to 70.0 %
100.0%
70.0%
50.0%
35.0%
Output operating
amount calculated
Operating amount
Output operating amount
that is actually output
SV temperature reached
Measurement temperature
Setting example:
When control characteristics in 100 VAC is desired to be maintained also in 120 VAC;
100 VAC and 100 W  120 VAC and 144 W, assuming that the heater resistance of 100  is identical for both 100 VAC and
120 VAC
100 W ÷ 144 W = 69.4 %
Thus, by setting the output gain setting to 69.4 %, control characteristics in 120 VAC can be expected to be analogous to those
in 100 VAC.
NOTE: In case the loop disconnection is used when the output gain setting is at 50.0%, make the working volume limiter the same as
that of output gain.