Overload Tolerance Overload Characteristics Cooling Ability
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
even at low speeds (as lower 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 5.0 min 1.0 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 or not 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.
No. Name Setting Range Default
L2-01 Momentary Power Loss Operation Selection 0 to 2 0
Setting 0: Disabled (default)
If power is not restored within 15 ms, a Uv1 fault will result and the drive will stop the motor.
5.7 L: Protection Functions
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
103
5
Parameter Details
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