7-18
Chapter 7. PARAMETER SETUP
●
●
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 %
Handling Precautions
• 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-propor-
tional output, set setup data
C
1
6
and
C
1
7
so that output in the
READY mode is 0 %.
SP
PV
OFF
ON
OFF
ON
Output (heat)
Output (cool)
H Y - L
D V - L
D V - H
H Y - H
