Hitachi L2002 L 5 4 3 2 1 PCS, Operations and Monitoring, Two-stageAcceleration and Deceleration

4–18

Using Intelligent Input Terminals

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 accelera- tion/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 A0093 (deceleration time 2) to set the second stage acceleration and deceleration times.

Output	target
frequency	frequency

second

initial

[2CH] 1 0

[FW], 1

[RV] 0

t

Operations and Monitoring

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	Function Name	Input		Description
Code	Symbol		State
09	2CH	Two-stage Accelera-	ON	Frequency output uses 2nd-stage acceleration
		tion and Deceleration		and deceleration values
			OFF	Frequency output uses the initial acceleration 1
				and deceleration 1 values
Valid for inputs:		C001, C002, C003, C004,		Example (default input configuration
		C005
				shown—see page 3–47):
Required settings:		A092, A093, A094=00			2CH
Notes:
					L 5 4 3 2 1 PCS

•Function A094 selects the method for second stage

acceleration. It must be set = 00 to select the input		–FU models
terminal method in order for the [2CH] terminal
assignment to operate.
	See I/O specs on page 4–6.