Hitachi S1 Series Basic Manual page 142

S1 series standard inverter
Function
Name
code
Pre-set PID
P09.01 reference of
keypad
PID feedback
P09.02
source
PID output
P09.03
characteristics
Detailed parameter description
This parameter determines the target reference
channel of process PID.
0: Keypad (P09.01)
1: AI1
2: AI2
3: AI3 (up to 2.2kW)
4: High-speed pulse HDI/HDIA
5: Multi-step
6: Modbus communication
7 - 12: Reserved
The set target value of process PID is relative
value, the set 100% corresponds to 100% of the
feedback signal of controlled system.
The system operates based on the relative value
(0–100.0%)
Users need to set this parameter when P09.00 is
set to 0, the reference value of this parameter is
the feedback variable of the system.
Setting range: -100.0%–100.0%
This parameter is used to select PID feedback
channel.
0: AI1
1: AI2
2: AI3 (up to 2.2kW)
3: High-speed pulse HDI/HDIA
4: Modbus communication
5 - 10: Reserved
Note: The reference channel and feedback
channel cannot overlap; otherwise, PID cannot be
controlled effectively.
0: PID output is positive characteristic: namely,
the feedback signal is larger than the PID
reference, which requires the inverter output
frequency to decrease for PID to reach balance,
eg, tension PID control of winding
1: PID output is negative characteristics: namely
the feedback signal is less than PID reference,
which requires inverter output frequency to
increase for PID to reach balance, eg, tension PID
-137-
Default
Modify
value
○
0.0%
○
0
○
0