Hitachi WJ200-001L, Instruction Manual, Page: 526 / 680

Ver.3
−
− −
−
17
Electronic thermal improve
•
It is with separation action possibility in inverter use and the electronic thermal for the motor when I establish
it with b910
≠
00. It depends on plural pattern / rate and becomes able to subtract electronic thermal
integrated value from in consideration of the heat production of the motor then.
I establish subtract rate in each pattern in b911/b912. Please establish the large value with enough margins for
the characteristic of the application motor.
It becomes b910 = 00 and the conventional action not to separate motor use and inverter use when I establish it.
•
I establish electronic thermal totalizing gain of b910=01 - 03:00 in b913.
If I establish 100%, it becomes the totalizing same as before. The time to trip gets longer when you establish
b913 small, and, please warn him because a protection is a direction becoming late.
Characteristics of electronic thermal protection for inverter according to b910 setting
Item Item Item Item
b910
b910 b910
b910
（ （ （ （
electronic thermal protection subtraction function selection
electronic thermal protection subtraction function selection electronic thermal protection subtraction function selection
electronic thermal protection subtraction function selection
00
00 00
00 01
01 01
01 02
02 02
02 03
03 03
03
E
le
ct
ro
n
ic
T
h
er
m
a
l p
ro
te
ct
io
n
fo
r
IN
V
Characteristic
s
Before Ver.3.0
(common to Motor)
Characteristics for inverter thermal protection
is fixed
(Identical to the constant torque characteristics
before Ver.3.0 with thermal level b012 of
rated current)
b012
～
b020
valid invalid
Time constant
(accumulation)
Dual Rating (2 modes : VT/VT)
Subtraction Not Available
Error Code E05 E38
（
Inverter Electronic Thermal Protection
）
Characteristics of electronic thermal protection for motor according to b910 setting
Item Item Item Item
b910 b910 b910 b910
（
（ （
（
electronic thermal protection subtraction function selection electronic thermal protection subtraction function selection electronic thermal protection subtraction function selection electronic thermal protection subtraction function selection
00 00 00 00 01 01 01 01 02 02 02 02 03 03 03 03
E
le
ct
ro
n
ic
T
h
er
m
a
l p
ro
te
ct
io
n
fo
r M
ot
or
Characteristic
s
Before Ver.3.0
(Common to
inverter)
Not common with inverter when subtraction valid
b012
～
b020 valid Valid (only for motor)
Time constant
(accumulation)
Prepared for Dual
rating (CT/VT)
Time constant for 1 mode of CT is used
(b913 is applied)
Subtraction
Not Available
Subtraction
max to zero in
10 minutes.
Subtraction
max to zero in
the time defined
with b911
Subtraction
with time
constant set as
b912
Error Code E05