YASKAWA G7 Series User Manual

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
NoQQQQQ
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
NoAAAAA
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 NoQQQQQ
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 Ye s Ye s Ye s
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YASKAWA G7 Series Specifications

General

Series	G7
Frequency	50/60 Hz
Output Voltage	Matches Input Voltage
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Communication	RS-485, Modbus, DeviceNet, Profibus, Ethernet
Safety	Safe Torque Off (STO)
Operating Temperature	-10°C to 50°C
Humidity	5% to 95% (non-condensing)
Cooling Method	Fan Cooled
Enclosure Rating	IP20
Storage Temperature	-20°C to 65°C