Mv At Pv Error - Omron E5CC User Manual

Parameter
MV at Stop
Note: The order of priority in respect to the manual MV and the MV at PV error is as follows: Manual MV > MV
at stop > MV at PV error.
• If the Direct Setting of Position Proportional MV parameter is set to ON, the operation is as shown
below when there is a potentiometer input error.
MV at stop ≥ 100: Open output turns ON.
MV at stop ≤ 0: Close output turns ON.
For any other MV at stop, both the open output and close output will turn OFF.

5-15-3 MV at PV Error

A fixed MV is output when there is an input error, an RSP input error, or a potentiometer input error
(close control only). To set the MV at PV error, set the MV at Stop and Error Addition parameter
(Advanced Function Setting Level) to ON. The MV at stop takes priority when control is stopped and the
manual MV takes priority in Manual Mode.
• Standard Models
For heating/cooling control, the MV at PV Error 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 to hold, so both outputs are turned OFF. If you set the Direct Setting of Position
Proportional MV parameter to OFF 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.
Parameter
MV at PV Error
Note: The order of priority with respect to the manual MV and the MV at Stop is as follows: Manual MV > MV at
stop > MV at PV error.
• If the Direct Setting of Position Proportional MV parameter is set to ON, the operation is as shown
below when there is a potentiometer input error.
MV at PV error ≥ 100: Open output turns ON.
MV at PV error ≤ 0: Close output turns ON.
For any other MV at PV error, both the open output and close output will turn OFF.
E5@C Digital Temperature Controllers User's Manual (H174)
Standard control: −5.0 to 105.0
Heating/cooling control: −105.0 to 105.0
Position-proportional Control
Direct Setting of Position Proportional MV parameter set to ON for close
control: −5.0 to 105.0
Floating control or Direct Setting of Position Proportional MV parameter set
to OFF:
CLOS (Control output 2 turns ON.)
HOLD (Control outputs 1 and 2 turn OFF.)
OPEN (Control output 1 turns ON.)
000
Standard control: −5.0 to 105.0
Heating/cooling control: −105.0 to 105.0
Position-proportional Control
Direct Setting of Position Proportional MV parameter set to ON for
close control: −5.0 to 105.0
Floating control or Direct Setting of Position Proportional MV param-
eter set to OFF:
CLOS (Control output 2 turns ON.)
HOLD (Control outputs 1 and 2 turn OFF.)
OPEN (Control output 1 turns ON.)
Setting range
Setting range
5 Advanced Operations
Unit Default
% or 0.0 or
none HOLD
Unit Default
% or 0.0 or
none HOLD
5 - 45
5