Output Adjustment Functions; Output Limits; Mv At Stop - Omron E5C User Manual

5 Advanced Operations

5-15 Output Adjustment Functions

5-15-1 Output Limits

• Output limits can be set to control the output using the upper and lower limits to the calculated MV.
• The following MV takes priority over the MV limits.
Manual MV*

MV at stop

MV at PV error
* When the manual MV limit is enabled, the manual MV will be restricted by the MV limit.
• For heating/cooling control, upper and lower limits are set for overall heating/cooling control. (They
cannot be set separately for heating/cooling.)

5-15-2 MV at Stop

The MV when control is stopped can be set.
To set the MV when control is stopped, set the MV at Stop and Error Addition parameter (Advanced
Function Setting Level) to ON.
• Standard Models
For heating/cooling control, the MV at stop will apply to the cooling side if the MV is negative and to
the heating side if the MV is positive. The default is 0.0, so an MV will not be output for either
standard or heating/cooling control.
• Position-proportional Models
You can select between open, close, and hold for floating control or when the Direct Setting of
Position Proportional MV parameter is set to OFF. For open, only the open output turns ON. For
close, only the close output turns ON. For hold, both the open output and close output turn OFF. The
default setting is hold, so both outputs are turned OFF. If you set the Direct Setting of Position
Proportional MV parameter to ON for close control, you can specify the valve opening. The default
setting is 0.0, which means that the open output and close output will be adjusted so that the valve
opening will go to 0.
5 - 44
Output
MV upper limit
MV lower limit
0%
Output
Heating MV
MV lower limit
MV upper limit
000
100%
Cooling MV
E5@C Digital Temperature Controllers User's Manual (H174)