Section 5 Functions and Operations
5-18
Functions and
Operations
■ MV at Stop
• This specifies the MV when control is stopped.
In heating/cooling control a negative value is used for the cooling
MV, thus when "MV at Stop" is positive, the MV will be sent to the
heating output, and when negative the MV will be sent to the cooling
output.
The initial setting is "0.0", which means there is no output at stop for
either standard or heating/cooling control.
Note: The order of priority of the MV settings is
Manual MV default >at Stop > MV at PV error
■ MV at PV error
This setting is used to output a fixed MV when an input error PV error
or remote SP input error occurs.
When position proportional control is selected, "MV at PV error" also
functions when a potentiometer input error occurs (when "Operation at
potentiometer input error" = "Stop" or "Closed").
When control is stopped, "at Stop" takes precedence. In manual mode,
the manual MV default takes precedence.
Note: The order of priority of the MV settings is
Manual MV default >at Stop > MV at PV error
Setting data Setting range Units
Default
value
MV at Stop
-5.0 to 105.0
(Standard control)
-105.0 to 105.0
(Heating/cooling control)
%0.0
mV-5
1
0.0
l.adj
MV at stop
Setting data Setting range Units
Default
value
MV at PV error
(Standard type)
-5.0 to 105.0
(Standard control)
-105.0 to 105.0
(Heating/cooling control)
%0.0
MV at PV error
(Position propor-
tional type)
-1 : Closed output ON
(Valve completely
open)
0 : No output (valve
opening hold)
1 : Open output ON
(Valve completely
closed)
− 0
mV-e
1
0.0
l.adj
MV at error