NF DP060LM Instruction Manual page 258

9. Troubleshooting
Table 9-3 Actions When a Failure is Suspected (Continued)
Category
Problem at The output
driving an overvoltage error
inductive occurs for an
load (e.g., inductive load
transformer) (e.g.,
transformer).
Memory The memory
function- cannot be
related recalled.
problem
Sequence/ The Sequence
Simulation- cannot be
related started.
problem
The specified
Step Time is
exceeded.
240
Symptom Possible Cause
An abrupt change in the
output current generated
a back electromotive
force.
The output is on.
The output is off.
The Stop Phase is
enabled.
Necessary Actions
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
The output on state does not allow
the recall. Turn the output off.
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
PROGRAMMABLE AC POWER SOURCE