TECO N3 Series - Page 77

N3 Drive Operations Manual
(Advanced) Parameter Details; A129 – A137 Cont. & A140 – A144 74
Example: 4 Poles,60Hz induction motor synchronization speed
=
120
× 60 = 1800 RPM
4
Note: Motor no load current (A130) differs with the inverter HP capacities (see parameter A175) and should be set to
actual values. (Refer to A002 note)
Please refer to the PID Block Diagram on next page, Fig 19.29.
A140 = 0001: D is the deviation of the process error signal in unit time (A144 differential time).
= 0002: D is the deviation of the feedback in unit time (A144 differential time).
= 0003: D is the deviation of the process error signal in the unit time (A144 differential time). If the deviation is
positive, the output frequency decreases and vice versa.
= 0004: D is the deviation of feedback in unit time (A144 differential time). When the deviation is positive, the
output frequency decreases, and vice versa.
= 0005: D is equal to the deviation of the process error signal in unit time (A144 differential time) +Frequency
command.
= 0006: D is equal to the deviation of feedback in unit time + Frequency command.
= 0007: D is equal to the deviation of the process error signal in unit time +Frequency command. If the
deviation is positive, the output frequency decreases, and vice versa.
= 0008: D is equal to the deviation of feedback in unit time + Frequency command. When Deviation is positive,
the frequency decreases, and vice versa.
A141 is the calibration gain. Deviation = (set point – feedback signal) × A141
A142: Proportion gain for P control
A143: Integration time for I control
A144: Differential time for D control
Cont.
A140
PID Operation Selection
0000: PID disable
0001: PID enable (Deviation is D-controlled)
0002: PID Feedback D-controlled
0003: PID D Reverse characteristic controlled
0004: PID Feedback D characteristic controlled
0005: PID, Frequency command + D controlled
0006: PID, Frequency command + Feedback D
controlled
0007: PID, Frequency Command + D reverse
Characteristic controlled.
0008: PID, Frequency Command + Feedback D
reverse Characteristic controlled.
A141
Feedback Calibration Gain
0.00 – 10.00
A142
Proportion Gain
0.00 – 10.00
A143
Integral Time (sec.)
0.0 – 100.0 Sec.
A144
Differential Time (sec.)
0.00 – 10.00 Sec.