Yaskawa G7 Drive - Manual (Page 268)

Machine Protection
6-
51
‹ Motor Overload Protection
You can protect the motor from overload using the Drive's built-in electronic thermal overload relay.
„ Related Parameters
* 1. Factory settings will vary based on drive capacity (values given here are for 200-240V class, 0.4kW).
* 2. Setting range is 10% to 200% of the drive's rated output current (values given here are for 200-240V class, 0.4kW).
Multi-Function Outputs (H2-01 to H2-05)
Parameter
Number
Name
Description
Setting
Range Factory
Setting
Change
during
Operation
Control Methods
Display V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
E2-01
Motor Rated
Current Sets the motor nameplate full load
current in amperes (A). This value
is automatically set during Auto-
Tuning. 0.32
to
6.40
*2
1.90 A
*1
No Q Q Q Q Q
Motor Rated
FLA
E4-01
Motor 2 Rated
Current Sets the motor 2 name plate full
load current in amperes (A). This
value is automatically set during
Auto-Tuning. 0.32
to
6.40
*2
1.90 A
*1
No A A A A A
Motor Rated
FLA
L1-01
Motor Overload
Protection
Selection Sets the motor thermal overload
protection (OL1) based on the
cooling capacity of the motor.
0: Disabled
1: Standard Fan Cooled
(< 10:1 motor)
2: Standard Blower Cooled
( ≤10:1 motor)
3: Vector Motor
( ≤1000:1 motor)In some
applications when the Drive
power supply is turned off, the
thermal value is reset, so even
if this parameter is set to 1,
protection may not be
effective.
When several motors are con-
nected to one Drive, set to 0 and
ensure that each motor is installed
with a protection device.
0 to 3 1 No Q Q Q Q Q
MOL Fault
Select
L1-02
Motor Overload
Protection Time Sets the motor thermal overload
protection (OL1) time. A larger
L1-02 time will increase the time
before an OL1 fault will occur.
0.1
to
5.0
1.0 min No A A A A A
MOL Time
Const
Setting
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
1F
Motor overload (OL1, including OH3) pre-alarm (ON: 90% or more of the detection
level)
Yes Yes Yes Yes Yes