Yaskawa J1000 Compact V/f Control Drive - Manual (Page 109)

Table 4.12 Motor Type and Overload Tolerances
L1-01
Setting
Motor Type Overload Tolerance Cooling Ability
Overload
Characteristics
1
General-
Purpose
Motor
(Standard
Self-Cooled)
Motor designed to operate
from line power.
Motor cooling is most
effective when running at
rated nameplate base
frequency (check the motor
specifications).
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.
2
Drive
Dedicated
Motor
(Constant
Torque, 1:10)
100
150
110 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.
Notes on Motor Protection
• Motor protection meeting UL and cUL standards is achieved with the motor overload
protection time (L1-02) set to factory default setting. Normally, L1-02 (Motor Overload
Protection Time) does not require setting. If the motor overload tolerance is clear, set the
overload protection time at hot start according to the motor. To detect overload earlier,
decrease the setting.
Figure 4.19 illustrates motor protection operation time characteristics.
10
7
3
1
0.4
0.1
0 100 200 150
Cold Start
Hot Start
Motor Current (%)
E2-01 = 100%
Operation Time (minutes)
Figure 4.19 Motor Protection Operation
4.5 Basic Operation
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide 109
4
Start-Up Programming & Operation