Yaskawa Matrix Converter - Manual (Page 216)

Machine Protection
6-
51
‹ Motor Overload Protection
The MxC’s built-in electronic thermal overload relay protects the motor from overload.
„ Related Parameters
* 1. The default depends on the MxC capacity. The value for a 200 V class MxC of 5.5 kW is given.
* 2. The setting range is from 10% to 200% of the MxC rated output current. The value for a 200 V class MxC for 5.5 kW is given.
Multi-Function Outputs (H2-01 to H2-05)
„ Setting Motor Rated Current
Set the rated current value on the motor nameplate in parameters E2-01 (Motor Rated Current) and E4-01
(Motor 2 Rated Current). This set value is the electronic thermal base current.
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
E2-01
Motor Rated Cur-
rent
Sets the motor nameplate full load current in
amperes (A). This value is automatically set
during Auto-Tuning. 2.70 to
54.00
*2
19.60 A
*1
No 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.
2.70
to
54.00
*2
19.60 A
*1
No A A A
Motor Rated FLA
L1-01
Motor Overload
Protection Selec-
tion 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)
0 to 3 1 No 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
MOL Time Const
Set
Value
Function
Control Methods
V/f
Open
Loop
Vector
Flux
Vector
1F Motor overload (OL1, including OH3) pre-alarm (on: 90% or more of the detection level) Yes Yes Yes