YASKAWA V1000 Series Technical Manual page 88

4.6 Basic Drive Setup Adjustments
No. Parameter Name
Sets the electronic thermal overload protection detection time in the motor
Motor Overload overload protection (OL1) function.
L1-02
Protection Time This setting rarely needs to be changed and should be set in accordance with the
overload tolerance of the motor.
Note: Executing C6-01 (Duty Cycle) changes motor parameters E2 and E4 including motor rated current to the values of the maximum applicable motor.
Digital Outputs (H2-01 through H2-03)
Setting
Motor Overload
1F
OL1 Alarm Warning (including OH3)
Setting Procedure
1.
Set E2-01 (Motor Rated Current) and E4-01 (Motor 2 Rated Current) to the motor rated current.
Note: 1. Values set for the current become the base current for electronic thermal overload protection.
2. These values are automatically set by performing Auto-Tuning.
3. The E4-01 setting is not needed if not using motor 2.
2.
Set the proper motor protection level to L1-01.
The ability of the cooling fan to keep an induction motor cool varies by the speed control range. Protection characteristics of the electronic thermal
overload protection should be set accordingly. Refer to
NOTICE: When connecting multiple motors to one drive, disable the electronic overload protection of the drive (L1-01 = 0) and protect each motor with its own motor
thermal overload. Failure to comply could result in improper drive operation.
NOTICE: Inadequate motor protection could result in damage to the motor. Configure a motor thermal overload to disconnect main power to the drive when tripped.
When using a thermal relay, disable the motor protection function (L1-01 = "0").
3.
Set the motor overcurrent alarm warning level.
When H2-01, H2-02, and H2-03 (Terminal MA, MB, and MC Function selection, Terminal P1 Function Selection, and Terminal P2 Function
Selection) are set to 1F motor overload (OL1 alarm warning), a motor overload alarm is enabled. If the electronic thermal value exceeds 90% of
the overload detection level, the set output terminal turns on.
L1-01 Setting Motor Type
General-purpose motor
1
(standard motor)
Inverter Duty motor
2
(1:10)
3 Vector motor (1:100)
88
Description
Function
Table 4.21
Table 4.21 Motor Type and Overload Tolerances
Overload Tolerance
150
Rated Speed = 100% Speed
60 seconds
100
90
(%)
60
Continuous
50
A
B
C
0 5 33 100 120 167 200
60Hz
Speed (%)
150
Rated Speed = 100% Speed
60 seconds
100
(%)
55
50
Continuous A
B
D
0 1 10
100 120 167 200
(60Hz)
Speed (%)
150
Rated Speed = 100% Speed
60 seconds
100
90
(%)
50
Continuous A
B
D
0 1
100 120 167 200
(60Hz)
Speed (%)
Setting Range
0.1 to 5.0
Closed = When OL1 function is at 90% of its trip point or greater.
for motor types and overload tolerances.
Cooling Fan Capacity
General purpose motors are designed to operate
from line power. The most effective cooling
occurs when running at line power specifications.
Motor designed to effectively self-cool at speeds
as low as 6 Hz.
Motor capable of effective cooling at extremely
low speeds (0.6 Hz).
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Default Setting
1.0 min
Description
Electrothermal Protection (100%
motor overload)
Operating continuously at less than line
power frequency can trigger motor
overload protection (OL1). A fault is then
output and the motor will coast to stop.
Continuous operation between 6 and 50/60
Hz.
Continuous operation between 0.6 and 60
Hz.