Hitachi S1 Series Basic Manual page 90

S1 series standard inverter
Control long-term vibration: If the cycle of periodic vibration is longer than the set value of integral
time (Ti), it indicates the integral action is too strong, prolong the integral time (Ti) to control vibration.
Control short-term vibration: If the vibration cycle is short is almost the same with the set value of
derivative time (Td), it indicates derivative action is too strong, shorten the derivative time (Td) to
control vibration. When derivative time (Td) is set to 0.00 (namely no derivative control), and there is
no way to control vibration, decrease the proportional gain.
Related parameter list:
Function
code
P09.00 PID reference source
P09.01 Pre-set PID reference of
Response
Response
Response
Name
0: Keypad (P09.01)
1: AI1
2: AI2
3: AI3
4: High-speed pulse HDIA
5: Multi-step
6: Modbus communication
7 – 8: Reserved
9: High-speed pulse HDIB
10 - 12: Reserved
-100.0%–100.0%
After adjustment
Before adjustment
Time t
Before adjustment
After adjustment
Time t
After adjustment
Before adjustment
Time t
Detailed parameter description
-85-
Default
value
0
0.0%