Omron SYSDRIVE 3G3FV, User Manual, Page: 332 / 400

7-44
7-2-7 Protection Parameter Lists
H
Motor Overload: L1
Para
meter
Name
Description Set-
ting De-
fault
Chan-
ges
Control mode
Page
meter
No.
Display name
ting
rang
e
fault
set-
ting
ges
dur-
ing
op-
era-
tion
V/f
con-
trol
V/f
with
PG
Open
loop
vec-
tor
Flux
vec-
tor
L1-01
Motor protection
selection
Sets whether the motor overload
function is enabled or disabled at
electric thermal overload relay.
0:
Disabled
1: Enabled
Note: In some applications when the
Inverter power supply is turned
off, the thermal value is reset,
so even if this parameter is set
0, 1 1 NO B B B B 6-98
MOL Fault Select
so even if this parameter 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.
L1-02
Motor protection
time constant
Sets the electric thermal detection
time in units of seconds.
Note: Usually setting is not necessary.
The default setting is 150%
overload for one minute.
When the motor’s overload re
0.1 to
5.0 1.0 NO B B B B 6-98
MOL Time Const
When the motor’s overload re-
sistance is known, set at the
overload resistance when the
motor is hot started. (Always
leave a margin for error.)
H
Power Loss Ridethrough: L2
Para
meter
Name Description Setting
range
Default
setting
Chan-
ges
Control mode Page
meter
No.
Display
name
range setting ges
during
opera-
tion
V/f
control
V/f
with
PG
Open
loop
vector
Flux
vector
L2-01 Momentary
power loss
selection 0: Disabled (Undervoltage
fault detection)
1: Enabled (Restarted when
the power returns within the
time for L2-02. When L2-02
is exceeded, undervoltage
fault detection )
0 to 2 0 NO B B B B 6-99
PwrL
Selection
fault detection.)
2: Enabled while CPU is
operating. (Restarts when
power returns during control
operations. Does not detect
undervoltage fault.
L2-02 Momentary
power loss
ridethru Sets the recovery time, when
momentary power loss selection
(L2-01) is set to 1, in units of
d
0.0 to
2.0 0.7
(See
note 1.) NO B B B B 6-99
PwrL
Ridethru t
( ) ,
one second.
)
Parameter Lists
Chapter 7