AC70 VC CONTROL FREQUENCY INVERTER MANUAL
FUNCTION PARAMETER DETAILED SPECIFICATION
109
V1, V2, V3, V4, V5 is base on the frequency rated output voltage
H-11 PID output characteristic
Range: 0, 1
Default: 0
PID control is a common method used in the process control. The output frequency is adjusted via a series of
proportion, integral, differential calculation of difference value between feedback value of controlled object and PID
given value, make up a negative feedback PID adjustment to achieve a goal which controlled objected stabilizes on
the PID given value.
0: Positive characteristic
Suitable for occasions where maintains the PID balance by reducing the
frequency inverter output frequency while the PID feedback quantity is greater than PID given value. Such as apply
in constant pressure water supply, gas supply and tension control of winding application.
1: Negative characteristic
Suitable for occasions where maintains the PID balance by increasing the
frequency inverter output frequency while the PID feedback value is greater than PID given value. Such as apply
in central air-conditioning constant temperature control and tension control of unwinding.
While frequency inverter receiving the operation command, frequency inverter will automatically control output
frequency after calculating for the given signal and feedback signal of the terminal according to the PID setting
control mode.
While the PID controls to cancel the terminal connection, frequency inverter will convert the given signal to output
frequency directly without PID control.
H-12
PID controller given signal
sources
Range: 0-6
Default: 1
0: Keypad potentiometer Given by the potentiometer of keypad analog signal.
1: PID keypad digital given Given value configured by
[H-16]
in general PID control
2: External terminal VS1 Given by the external terminal
（
VS1
）（
0V-10V
）
analog signal.
3: External terminal AS Given by the external terminal
（
AS
）（
4-20mA
）
analog signal.
4: External terminal VS2 Given by the external terminal
（
VS2
）
analog signal.
（
[F-48]
can’t be set for 1 or 2
）
.
5: External pulse signal Given by the external terminal
（
PUL
）
pulse frequency signal.
6: RS485 interface Given by RS485 communication interface receiving signal.
H-13
PID controller feedback
signal source
Range: 0-3
Default: 1
0. External terminal VS1 Set by the external terminal (VS1) (0V-10V) analog signal.
1. External terminal AS Set by the external terminal (AS) (4-20mA) analog signal.
2. External terminal VS2 (bipolar invalid) Set by the external terminal (VS2) analog signal.(
[F-48]
can’t be set
for 1 or 2) .
3. External pulse signal Set by the external terminal (PUL) pulse frequency signal.
Note: PID controller given signal source and PID controller feedback source can’t be set in the same
channel, otherwise PID is disabled.
