PLZ-4W
Maintenance and Calibration 8-15
Symptom 4: Input current is unstable or oscillates.
Symptom 5: ALARM is activated.
Symptom 6: The load cannot be turned on.
Check Item
Possible Cause
Remedy
Location and Status of the Object
Check Result
Is rated voltage applied for the
input power supply (AC)?
No
Low supply voltage
Use the PLZ-4W in the input
supply voltage range.
Yes
Malfunction
Immediately stop the use of the
instrument and request repairs.
Is the ALARM illuminated?
Yes
An internal or external
error occurred on the
PLZ-4W.
Check the alarm type and carry
out the appropriate remedy.
See section 5.3, “Types of Pro-
tection Functions.”
Is there a large loop in the load
wire?
Yes
→
Twist the wires.
See section 2.8, “Load Wiring.”
The load wire is long.
Long
→
Change the response (transient
response) using menu setup.
Check Item
Possible Cause
Remedy
Location and Status of the Object
Check Result
Is the fan stopped?
Yes
Overheat protection
tripped.
Immediately stop the use of the
instrument and request repairs.
Is the air intake or outlet
obstructed?
Yes
Overheat protection
tripped.
Clogged dust
fi
lter
Allow at least 20 cm between the
air outlet and the wall. In addition,
do not place objects within 20 cm.
Clean the dust
fi
lter.
Is OCP tripped?
Yes
The OCP setting is small.
Set an appropriate OCP value on
the setup screen.
See section 5.4, “Setting the Pro-
tection Function.”
Is OPP tripped?
Yes
The OPP setting is small.
Set an appropriate OPP value on
the setup screen.
See section 5.4, “Setting the Pro-
tection Function.”
Check Item
Possible Cause
Remedy
Location and Status of the Object
Check Result
A sequence is in operation
Yes
→
Wait for the sequence operation
to
fi
nish.
Abort the sequence using the
STOP key.
No
The load on/off logic
(Load ON IN) is set to
low.
Set Load ON IN to high using
menu setup.
See section 5.13, “Menu Setup.”
Содержание PLZ-4W Series
Страница 10: ...VIII Contents PLZ 4W ...
Страница 20: ...1 10 General Information PLZ 4W ...
Страница 38: ...2 18 Installation and Preparation PLZ 4W ...
Страница 90: ...5 30 Basic Operation PLZ 4W ...
Страница 192: ...9 10 Specifications PLZ 4W ...
Страница 214: ...A 22 Appendix PLZ 4W ...