Overload Restriction - Hitachi X200 Series Instruction Manual

Overload Restriction

If the inverter's output current exceeds a
preset current level you specify during
acceleration or constant speed, the overload
restriction feature automatically reduces the
output frequency to restrict the overload.
This feature does not generate an alarm or
trip event. You can instruct the inverter to
apply overload
constant speed,
currents for acceleration. Or, you may use
the same threshold for both acceleration and
constant speed.
When the inverter detects an overload, it
must decelerate the motor to reduce the
current until it s less than the threshold. You
can choose the rate of deceleration that the
inverter uses to lower the output current.
Func. Name /
Code SRW Display
B021 Overload restriction
operation mode
OL Mode
B221 Overload restriction
operation mode, 2nd motor
2OL Mode
B022 Overload restriction level
setting
OL LVL
B222 Overload restriction level
setting, 2nd motor
2OL LVL
B023 Deceleration rate at overload
restriction
OL Cnst
B223 Deceleration rate at overload
restriction, 2nd motor
2OL Cnst
B028 Source of overload restriction
selection
OL L_SLCT
B228 Source of overload restriction
selection, 2nd motor
2OL L_SLCT
Frequency Pull-in Restart
Restart Mode Configuration " (B088) section on page
See "
restriction only during
thus allowing higher
"B" Function
Select the operation mode during
overload conditions, three
options, option codes:
ON
00 Disabled
01 Enabled for acceleration and
constant speed
02 Enabled for constant speed
ON
only
Sets the level for overload
restriction, between 20% and
150% of the rated current of the
002.40A
inverter, setting resolution is 1%
of rated current
002.40A
Sets the deceleration rate when
inverter detects overload, range
0001.0s is 0.1 to 30.0, resolution 0.1
0001.0s
Two option codes:
00 set value of B022
PARAM 01 [O] input
Two option codes:
00 set value of B222
PARAM 01 [O] input
Motor
Restriction area
current
B022
0
Output
frequency
0
B022
Description
3-42.
3 35
3 35
Run Defaults
Mode
-FE -FU
Units
Edit
(EU) (USA)
01 01
01 01
Rated A
current
x 1.5
Rated A
current
x 1.5
1.0 30.0 sec.
1.0 30.0 sec.
00 00
00 00
t
t