Sonic Alert Digital Program Controller DCP301 - Manual (Page 100)

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