Merlin Gerin Varlogic NR12, User Manual

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Code Meaning
Unstable network: The controller is unable to
operate due to excessive load variations on the
network. CT oversized.
Step size too small: The effect of the 1
st
step
cannot be measured. CT oversized, wrong
wiring, inoperative steps.
Sequence not found: Step ratio does not match
available step sequences.
Step size too large: The ratio of measured step
compared with the 1
st
step is too large. Step
sequence cannot be resolved.
Non-relevant autosetup process with this bank
configuration
Reserved
Wiring verify error: Controller wiring not correct.
Step count error: The Number of Steps setting
is incorrect.
Step sequence error: The step size ratios differ
from the selected step sequence.
C/K value error.
14
USER´S MANUAL
5.5 Auto Setup of Parameters
The auto setup sequence is intended for inexperienced users so they can commission the bank
with minimal prior knowledge. The user need only input three of the most common parameters
and then launch an automatic search for the other parameters.
NOTE: The use of Auto Setup of Parameters menu is forbidden on HV network applications
In the event of error, see the Commissioning Menu (chapter 5.4).
Action to do
• Enter the parameter settings
manually using Parameter
Update menu.
• Rerun the commissioning
sequence
• Check wiring, CT, condition of
capacitor steps (1
st
step)
• Check the condition and sizes
of steps and contactors
• Check the condition and sizes
of steps and contactors
• Use manual setup to confirm
or correct the information
obtained by autosetup
• Check the wiring of voltage-
and current inputs
• Check the Wiring setting from
Parameter Update menu
• Check the Number of Steps
setting
• Check the number of steps in the
bank and the condition of steps
• Check Step Sequence setting
• Check step sizes used in the
bank
• Check the response value used
• Check the size of 1
st
step in the
bank
to