Hitachi SJ Series, User Manual

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12-19-1
Chapter 12 Inverter Function
12.19 How to output a warning signal
to a terminal
12.19.1 Outputting an alarm signal
• I want to detect the error state of the inverter and
make a notification to the system.
• Assign the output terminal function 017 [AL] alarm
signal to one of [CC-01] to [CC-07] that
corresponds to the output terminal and output the
signal.
• The [AL] function is assigned in the initial state to
the contact c relay [CC-07] of AL1-AL0 and
AL2-AL0.
Alarm relay AL
• The operations of AL1-AL0 and AL2-AL0 are as
follows.
[CC-17]
Control
power
Inverter error
output
Output terminal
state
AL1-AL0 AL2-AL0
00
On
Abnormal Close Open
Normal Open Close
Off - Open Close
01
On
Abnormal Open Close
Normal Close Open
Off - Open Close
• The specifications of the relay contacts AL1-AL0
and AL2-AL0 are as follows.
Resistive
load
Inductive
load
AL1-AL0
Maximu
m
contact
capacity
AC250V,2A
DC30V,3A
AC250V,0.2A
DC30V,0.6A
Minimum
contact
capacity
AC100V,10mA
DC5V,100mA
AL2-AL0
Maximu
m
contact
capacity
AC250V,1A
DC30V,1A
AC250V,0.2A
DC30V,0.2A
Minimum
contact
capacity
AC100V,10mA
DC5V,100mA
• If the system recognizes an interruption of the
inverter power supply as an error, this symptom
may be alleviated by changing the wiring and the
selection of contacts.
• You can set the output specifications of contacts a
and b to output terminals 11-15, relay output
terminals 16A-16C, AL1-AL0, and AL2-AL0
individually.
Relay output 16C
• The operations of 16C are as follows.
[CC-16]
Control
power
Functional
operation
Output terminal state
00
On
ON Close
OFF Open
Off - Open
01
On
ON Open
OFF Close
Off - Open
• The specifications of the relay contact 16C are as
follows.
Resistive
load
Inductive
load
16C
Maximum
contact
capacity
AC250V,2A AC250V,1A
Minimum
contact
capacity
AC250V,1mA
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