GE AF-300 o00 Option selection, RS485 RTU communication, optional RS485 serial communication unit

Change during operation: N = impossible, Y* = possible (enabled by using

FUNC DATA

), Y= possible (enabled by using )

PID control

In PID control, an output frequency is adjusted to a feedback value.

Use F 0 1 to set a frequency and H 2 1 to make the feedback value and the refer- ence value equal.

PID arithmetic unit

Reference

Deviation

Switching between

1

Drive

+

+ s ⋅ Td)

Normal and

IM

P

frequency

Kp ⋅ (1

+

_

s ⋅ Ti

Inverse operation

output

Feedback value

(sensor)

AF-300C11

Kp : P-gain

Td : Derivative time Ti : Integral time

Inverse

Normal

operation

operation

Deviation

Deviation

Output	Deviation is positive and
frequency
	frequency increases.

Output frequency

Deviation is positive and

frequency decreases.

o00 Option selection	Factory	Change during
	setting	operation
(RS485 RTU communication)	0	Y*

0 : Option inactive 1 : Option active

Always set			0	when the optional RS485 RTU serial communication unit is not used.
If		is set, Er 8 occurs.
	1

For explanations of “o01” to “o11”, refer to the instruction manual that comes with the

optional RS485 serial communication unit.

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