NF DP060LM, Instruction Manual, Page: 258 / 307

9. Troubleshooting
PROGRAMMABLE AC POWER SOURCE 240
Table 9-3 Actions When a Failure is Suspected (Continued)
Category Symptom Possible Cause Necessary Actions
Problem at
driving an
inductive
load (e.g.,
transformer) The output
overvoltage error
occurs for an
inductive load
(e.g.,
transformer). An abrupt change in the
output current generated
a back electromotive
force. When the output is off or the peak
current limiter is activated, the
load current may change abruptly,
which generates a back
electromotive force to cause the
output overvoltage error. To avoid
the abrupt current change, reduce
the setting value of the peak
current limiter sufficiently for a
smaller output current, or
conversely set it to a sufficiently
large value to disable the limiter
to be activated, or sufficiently
reduce the amplitude before
turning off the output.

4.1.1
Memory
function-
related
problem The memory
cannot be
recalled. The output is on. The output on state does not allow
the recall. Turn the output off.
Sequence/
Simulation-
related
problem The Sequence
cannot be
started. The output is off. Turn on the output, then start the
sequence.
The specified
Step Time is
exceeded. The Stop Phase is
enabled. 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