Inovance MD500 Series User Manual

6. Description of Parameters
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6
FC-50 sets running time unit in simple PLC mode. FC-51 selects the setting channel of
reference 0.
Function Code Parameter Name Setting Range Default
FC-50
Time unit of simple
PLC running
0: s (second)
1: h (hour)
0
FC-51
Reference 0 source 0: Set by FC-00
1: AI1
2: AI2
3: AI3
4: Pulse reference
5: PID
6: Set by preset frequency (F0-08),
modied via terminal UP/DOWN
0
Note
Simple PLC can be either frequency reference setting channel or voltage
reference setting channel for V/F separation.
■
PID Reference
The PID (Proportional + Integral + Derivative) function uses system feedback for closed-
loop control of variables such as ow, pressure, temperature, and so on.
The purpose of PID control is to keep the drive output as close as possible to a desired
reference via PID adjustment.
● Proportional gain (Kp1)
A large value tends to reduce present error, but too large setting will cause system
oscillation.
● Integral time (Ti1)
The shorter the integral time is, the faster the error will be predicted. But too short
setting will cause overshoot or system oscillation.
● Derivative time (Td1)
The longer the derivative time is, the faster the system will respond to the error. But
too longer setting will cause vibration.

Inovance MD500 Series Specifications

General

Brand	Inovance
Model	MD500 Series
Category	Inverter
Language	English