Overload Tolerance Cooling Ability Overload Characteristics
100
150
1
10
100120
167 200
55
50
0
Rated Speed=100% Speed
60 sec.
Continuous
A
D
B
(60 Hz)
Speed (%)
Torque (%)
Motor is designed to effectively cool
itself at speeds as low as 6 Hz.
Continuous operation with 100% load
from 6 Hz to 50/60 Hz.
n
L1-02: Motor Overload Protection Time
Sets the time it takes the drive to detect motor overheat due to overload. This setting rarely requires adjustment, but should
correlate with the motor overload tolerance protection time for performing a hot start.
No. Name Setting Range Default
L1-02 Motor Overload Protection Time 0.1 to 20.0 min 8.0 min
• Defaulted to operate with an allowance of 150% overload operation for one minute.
• Figure 5.34 shows an example of the electrothermal protection operation time using a general-purpose motor operating at
60 Hz with L1-02 set to one minute.
Operation time (minutes)
Cold start
Hot start
Motor current (%)
E2-01 = 100% m o t o r c u r r e n t
10
7
3
1
0.4
0.1
0 100 150 200
Figure 5.34 Motor Protection Operation Time
n
L1-13: Continuous Overload Detection Selection
Determines whether to hold the current value of the electrothermal motor protection (L1-01) when the power supply is
interrupted.
No. Name Setting Range Default
L1-13 Continuous Electronic Thermal Overload Protection Selection 0 or 1 1
Setting 0: Disabled
Setting 1: Enabled
u
L2: Momentary Power Loss Ride-Thru
n
L2-01: Momentary Power Loss Operation Selection
When
a momentary power loss occurs the drive can be set to automatically return to the operation it was performing when the
power went out based on certain conditions.
5.7 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
113
5
Parameter Details
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