The failure alarm signal is generated from the terminal AL0 and AL1 when a failure hap- pens. At this time the contents of the failure are displayed on the digital operator.

Whether the alarm terminal output is to be turned on or off during normal run can be

selected by the extension function .

The alarm output terminals at initial setting are as follows (1).

The alarm output terminals are valiable as follows (2) by setting .

 

 

 

 

 

 

 

 

 

(1) Contact b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2) Contact a

 

 

 

 

 

 

During normal operation

 

 

 

At occurrence of an

 

During normal operation

 

At occurrence of an alarm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

alarm or power off

 

 

 

or at power off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL2

AL1

AL0

 

 

 

 

AL2

AL1

AL0

 

 

 

 

AL2

 

AL1

AL0

 

 

 

 

AL2

AL1

AL0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contact

 

Power

Operation

AL0-AL1

AL0-AL2

 

 

 

Contact

 

Power

 

Operation

AL0-AL1

AL0-AL2

 

 

 

 

 

 

 

 

 

 

Status

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status

 

 

 

 

 

 

 

 

 

 

 

 

b

 

ON

Normal

Closed

 

Open

 

 

 

a

 

 

ON

 

Normal

Open

Closed

 

 

 

(initial

 

ON

Abnormal

Open

 

Closed

 

 

 

 

 

ON

Abnormal

Closed

Open

 

 

 

setting)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

Ñ

 

Open

 

Closed

 

 

 

 

 

 

 

 

 

 

OFF

Ñ

 

Open

Closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Contact specification

Maximum

 

Minimum

250 VAC 2.5 A (Resistor load) 0.2 A (cos¿=0.4)

100 VAC 10 mA

 

 

 

30 VDC 3.0 A (Resistor load)

0.7 A (cos¿=0.4)

5 VDC 100 mA

 

 

 

Working voltage: Max. 50 V

• Saving the alarm signal

When an alarm signal is outputted, the alarm signal data is stored even if the input power is turned off and the contents can be checked by turning the power on once again. However, when the input power is turned off, the inverter control power is also turned off. As a result, when the power is turned on next, the alarm contact output is reset (deleted). There- fore, when saving the alarm contact output, let the external sequence receive and save it and then turn off the inverter input power.

When the alarm contact output is set ON during normal run, a time delay occurs until the contact is closed when the power is turned on. Therefore, when using the alarm contact output, set a time delay of about 2 seconds when the power is turned on.

6-5

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Image 39
Hitachi J300U Series instruction manual Contact specification, Contact b Contact a