NF DP420LS Instruction Manual page 247

Programmable ac power source
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9. Troubleshooting
Table 9-3 Actions When a Failure is Suspected (Continued)
Category
Sequence/
The Sequence
Simulation-
cannot be
related
started.
problem
The specified
Step Time is
exceeded.
Problem of
The polyphase
polyphase
system is not
system
recognized at
start-up.
228
Symptom
Possible Cause
The output is off.
The Stop Phase is
enabled.
The System Cable is not
connected properly.
Necessary Actions
Turn on the output, then start the
sequence.
When the stop phase setting is
active, the execution waits for the
Step Time that was set pass, and
keeps the output setting until it
reaches the Stop Phase that was
set, and then transitions to the
next step. As the result, the actual
step time is longer than the set
Step Time. To move to the next
step immediately after the Step
Time, disable the Stop Phase.
4.2
Check the System Cable
connection for any disconnected
connector, and so on.
PROGRAMMABLE AC POWER SOURCE

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