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(19)CH Upper limit output limiter (Un\G42, Un\G74, Un\G106, Un\G138)
CH Lower limit output limiter (Un\G43, Un\G75, Un\G107, Un\G139)
CH Heating upper limit output limiter (Un\G42, Un\G74, Un\G106,
Un\G138)
CH Cooling upper limit output limiter (Un\G721, Un\G737, Un\G753, Un\G769)
In the standard control, set upper limit value/lower limit value for actual output of manipulated value (MV)
calculated by the PID operation to an external device. In the heating-cooling control, set upper limit value of
heating/cooling for actual output of manipulated value for heating (MVh)/manipulated value for cooling (MVc)
calculated by the PID operation to an external device. Additionally, Un\G42, Un\G74, Un\G106, Un\G138 are
used for heating in the heating-cooling control. During the auto tuning, setting of Heating upper limit output limiter
and Cooling upper limit output limiter are disabled.
(a) Setting range
The following table lists setting range of each buffer memory.
● In the standard control, CH Cooling upper limit output limiter (Un\G721, Un\G737, Un\G753, Un\G769) is invalid even it
is set.
● In the heating-cooling control, lower limit value is not used. When CH Lower limit output limiter (Un\G43, Un\G75,
Un\G107, Un\G139) is set to other than 0, a write data error (error code: 2
H
) occurs.
Buffer memory Setting range Remarks
CH Upper limit output limiter (Un\G42,
Un\G74, Un\G106, Un\G138)
-50 to 1050 (-5.0% to 105.0%)
Set the values to lower limit output limiter value
<
upper limit output limiter value.
When lower limit output limiter value upper limit
output limiter value, write data error (error code:
5
H
) occurs. In addition, if the setting is out of
the setting value, a write data error (error code:
4
H
) occurs. When the error occurs, the
following situations occur.
• Write error flag (Xn2) turns on.
• The error code is stored in Write data error code
(Un\G0).
CH Lower limit output limiter (Un\G43,
Un\G75, Un\G107, Un\G139)
CH Heating upper limit output limiter
(Un\G42, Un\G74, Un\G106, Un\G138)
0 to 1050 (0.0% to 105.0%)
If the setting is out of the setting value, a write data
error (error code: 4
H
) occurs. When the error
occurs, the following situations occur.
• Write error flag (Xn2) turns on.
• The error code is stored in Write data error code
(Un\G0).
CH Cooling upper limit output limiter
(Un\G721, Un\G737, Un\G753,
Un\G769)
Standard
Standard
Heating-cooling
Heating-cooling