Chapter 7. PARAMETER SETUP
7-15
●
D
v
-L
(3-position control deviation lower limit)
●
D
v
-H
(3-position control deviation upper limit)
●
H
Y
-L
(3-position control lower limit hysteresis)
●
H
Y
-H
(3-position control upper limit hysteresis)
In 3-position control, control is carried out in the following three states in the RUN,
HOLD, FAST and END modes.
State
Heat-side Output
Cool-side Output
MV
1
OFF (0.0%)
ON (100.0%)
0.0%
2
OFF (0.0%)
OFF (0.0%)
50.0%
3
ON (100.0%)
OFF (0.0%)
100.0%
SP
PV
OFF
ON
OFF
ON
Output (heat)
Output (cool)
H Y - L
D V - L
D V - H
H Y - H
Even in 3-position control, output is time-proportional in the READY mode. This
is set in setup data
C
1
6
(MV (heat) in READY mode) and
C
1
7
(MV (cool) in
READY mode).
When connecting an actuator that may burn by time-proportional output, set setup
data
C
1
6
and
C
1
7
so that output in the READY mode is 0%.
Handling Precautions