YASKAWA CIMR-G5A Series - Protection Constants: L

8.2 Programming Mode Constants
8-35
8.2.7 Protection Constants: L
J Motor Overload: L1
C
Name
S
Change
Control Methods
Constant
Number
Display
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
V/f
V/f
with
PG
Open
Loop
Vector
Flux
Vector
Page
L1-01
Motor protection
selection
Sets whether the motor overload
function is enabled or disabled at
electric thermal overload relay.
0: Disabled
1: Enabled
:In some applications when the
Inverter power supply is turned
off, the thermal value is reset,
0, 1 1
×
B B B B
7-84
L1 01
MOL Fault Select
of
f
,
the
thermal
value
is
reset
,
so even if this constant is set to
1, (Enabled), protection may
not be effective.
When several motors are con-
nected to one Inverter, set to 0
(Disabled) and ensure that each
motor is installed with a protec-
tion device.
0
,
1
1
×
B
B
B
B
7
84
L1-02
Motor protection time
constant
Sets the electric thermal detection
time in seconds units.
:Usually setting is not necessary.
The factory setting is 150%
overload for one minute.
0.1 to
50
1.0
×
B B B B
7-84
L1 02
MOL Time Const
overload
for
one
minute
.
When the motor’s overload re-
sistance is known, set at the
overload resistance when the
motor is hot started.
5.0
1
.
0
×
B
B
B
B
7
84
J Power Loss Ridethrough: L2
C
Name
S
Change
Control Methods
Constant
Number
Display
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
V/f
V/f
with
PG
Open
Loop
Vector
Flux
Vector
Page
L2-01
Momentary power
loss detection
0: Disabled (Undervoltage fault
detection)
1: Enabled (Restarted when the
power returns within the time
for L2-02. When L2-02 is ex-
ceeded, undervoltage fault
detection )
0to2 0
×
B B B B
7-85
L2 01
PwrL Selection
detection.)
2: Enabled while CPU is operat-
ing. (Restarts when power re-
turns during control opera-
tions. Does not detect under-
voltage fault.
0
to
2
0
×
B
B
B
B
7
85
L2-02
Momentary power
loss ridethru time
Sets the recovery time, when mo-
mentary power loss selection
(L2 01)
is
set
to
1
in
units
of
one
0.0 to
20
0.7
*
1
×
B B B B
7-85
L2 02
PwrL Ridethru t
(L2-01) is set to 1, in units of one
second.
2.0
*
1
×
B
B
B
B
7
85
L2 03
Min. baseblock time
Sets the Inverter’s minimum base-
block time in units of one second,
when the Inverter is restarted after
power loss ridethrough.
:
Sets the time for the motor’s re-
0.1 to
0.5
×
B
B
B
B
7
86
L2-03
PwrL Baseblock t
:
Sets
the
time
for
the
motor
s
re
-
sidual voltage to dissipate.
When an overcurrent occurs
when starting a speed search or
DC injection braking, increase
the set values.
0
.
1
to
5.0
0.5
*
1
×
B B B B
7-86
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