Hitachi X200 Series instruction manual Output Signal ON/OFF Delay Function, Output Signals

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Output Signal ON/OFF Delay Function

Intelligent outputs including terminals [11], and the output relay, have configurable signal transition delays. Each output can delay either the OFF-to-ON or ON-to-OFF transitions, or both. Signal transition delays are variable from 0.1 to 100.0 seconds. This feature is useful in applications that must tailor inverter output signals to meet timing requirements of certain external devices.

The timing diagram below shows a sample output signal (top line) and the results of various ON/OFF delay configurations.

•Original signal - This example signal waveform consists of three separate pulses named “A,” “B,” and “C.”

•...with ON delay - Pulse A is delayed by the duration of the ON delay time. Pulses B and C do not appear at the output, because they are shorter than the ON delay.

•...with OFF delay - Pulse A is lengthened by the amount of the OFF delay time. The separation between pulses B and C does not appear at the output, because it is shorter than the OFF delay time.

•...with ON/OFF delays - Pulse A is delayed on both leading and trailing edges by the amounts of the ON and OFF delay times, respectively. Pulses B and C do not appear at the output, because they are shorter than the ON delay time.

Operations and Monitoring

Output Signals:

Original (no delays)	1
	0
…with ON delay	1
	0
…with OFF delay	1
	0
…with ON/OFF delays	1
	0

	ON		OFF		ON
delay			delay	delays
		A		B C

OFF delays

t

Func.	Description		Range	Default
C144	Terminal [11]	ON delay	0.0 to 100.0 sec.	0.0
C145	Terminal [11]	OFF delay	0.0 to 100.0 sec.	0.0
C148	Output relay ON delay		0.0 to 100.0 sec.	0.0
C149	Output relay OFF delay		0.0 to 100.0 sec.	0.0

Use of the ON/OFF signal delay functions are optional. Note that any of the intelligent output assignments in this section can be combined with ON/OFF signal timing delay configurations.