Check~Ng Before Adjustment; Adjustment - Mitsubishi Electric FREQROL-K Series Instruction Manual

7.1 Checking before Adjustment
After the inverter has been installed and w~red, check the follow~ng points before adjustment.
3
a
(1) Check if there
is
miswir~ng. Especially, check if the power supply i s wired to the output ter-
minal.
(2)
Check for short circuit due to wire strands touch~ng adjacent terminals.
(3)
Check if the wire is deformed, and check for damaged cable insulation.
(4) Check that a l l screws, terminals and other fasteners are securely tightened.
(5)
Check that the load is in good condition, and safe to run.
(6) Check if there is ground fault on the output side (load side).
'
7.
ADJUSTMENT A N D OPERATION
When a megger is used for checking, use it only for measuring resistance to earth.
Never use the megger for measurement across the terminals of inverter.
Do not use the megger for measurement across the terminals of control circuit. For
details of checking w ~ t h the megger, refer to Section 8 on page 23.
7.2 Adjustment
After the checking 1s completed, set and adjust the following items according to the load specifica-
tlons.
I . - , .
.
-
I
2 .
, ? ? L L Y .
& <
Note*
When the inverter
i s
equ~pped with the operation panel and the frequency setting signal
n
input from
the exter~or of rnverter, move thrs swrtch to the
OFF
posrtion
Adjustment (Sett~ng) Item
Accelerat~on/deceleratron tlme
Boost control
.
.Max~mum output frequency and
base frequency ( V I F pattern)
Use of frequency setter
(only when
operation
panel
IS
prov~ded)
Adjuster (Setter)
ACCELIDECEL
settlng d ~ a l and
magn~flcat~on swltch
Automatic and manual boost pots
8 ONIOFF sw~tches
-
rr
*
Swltch for
connection
to frequency setter
Location
Sett~ng panel
I
Bottom r~ght of
pr~nted ctrcult board
Operat~on panel