Hitachi hitachi series inverter user manual Two Stage Acceleration and Deceleration, Fw,Rv, 2CH

Two Stage Acceleration and Deceleration

When terminal [2CH] is turned ON, the inverter changes the rate of acceleration and

deceleration from the initial settings (F002 and F003) to use the second set of acceleration/ deceleration values. When the terminal is turned OFF, the inverter is returned to the original acceleration and deceleration time (F002 acceleration time 1, and F003 deceleration time 1). Use A092 (acceleration

time 2) and A093 (deceleration time 2) to set the second stage acceleration and deceleration times.

	Target
	frequency
Output	second
	initial
frequency
[2CH]	1
	0
[FW,RV]	1
	0
	t

In the graph shown above, the [2CH] becomes active during the initial acceleration. This causes the inverter to switch from using acceleration 1 (F002) to acceleration 2 (A092).

Option Terminal Code Symbol

Function Name

State

Description

09

2CH

Two-stage Accelera- tion and Deceleration

ON	Frequency output uses 2nd-stage acceleration and
	deceleration values
OFF	Frequency output uses the initial acceleration 1 and
	deceleration 1 values

C001~C007

A092, A093, A094=00

Notes:

•Function A094 selects the method for second stage acceleration. It must be set = 00 to select the input terminal method in order for the [2CH] terminal assignment to operate.

Example (default input configuration shown see page 66):

2CH

7 6 5 4 3 2 1 L PLC P24

See I/O specs on page 21,22.

33