Precautionary Notes On External Heatsink (Ip00 Enclosure) - YASKAWA A1000 Technical Manual

C.2 UL and CSA Standards
Setting
0 Disabled
1 Standard fan-cooled motor (default)
2 Drive duty motor with a speed range of 1:10
3 Vector motor with a speed range of 1:100
Permanent Magnet motor with variable
4
torque
Permanent Magnet motor with constant
5
torque
6 Standard fan-cooled motor (50 Hz)
When connecting the drive to more than one motor for simultaneous operation, disable the electronic overload protection
(L1-01 = 0) and wire each motor with its own motor thermal overload relay.
Enable motor overload protection (L1-01 = 1 to 5) when connecting the drive to a single motor, unless another motor overload
preventing device is installed. The drive electronic thermal overload function causes an oL1 fault, which shuts off the output
of the drive and prevents additional overheating of the motor. The motor temperature is continually calculated while the drive
is powered up.
n L1-02: Motor Overload Protection Time
Setting Range: 0.1 to 5.0 min
Factory Default: 1.0 min
Parameter L1-02 determines how long the motor is allowed to operate before the oL1 fault occurs when the drive is running
at 60 Hz and at 150% of the full load amp rating (E2-01) of the motor. Adjusting the value of L1-02 can shift the set of oL1
curves up the y axis of the diagram below, but will not change the shape of the curves.
u

Precautionary Notes on External Heatsink (IP00 Enclosure)

When using an external heatsink, UL compliance requires covering exposed capacitors in the main circuit to prevent injury
to surrounding personnel.
The portion of the external heatsink that projects out can be protected with the enclosure or with the appropriate capacitor
cover after completing drive installation. Use
covers from a Yaskawa representative or directly from the Yaskawa sales department.
248
Table C.6 Overload Protection Settings
Description
Disabled the internal motor overload protection of the drive.
Selects protection characteristics for a standard self-cooled motor with limited cooling capabilities
when running below the rated speed. The motor overload detection level (oL1) is automatically
reduced when running below the motor rated speed.
Selects protection characteristics for a motor with self-cooling capability within a speed range of
10:1. The motor overload detection level (oL1) is automatically reduced when running below
1/10 of the motor rated speed.
Selects protection characteristics for a motor capable of cooling itself at any speed including zero
speed (externally cooled motor). The motor overload detection level (oL1) is constant over the
entire speed range.
Selects protection characteristics for a variable torque PM motor. The motor overload detection
level (oL1) is automatically reduced when running below the motor rated speed.
Selects protection characteristics for a constant torque PM motor. The motor overload detection
level (oL1) is constant over the whole speed range.
Selects protection characteristics for a standard self-cooled motor with limited cooling capabilities
when running below the rated speed. The motor overload detection level (oL1) is automatically
reduced when running below the motor rated speed.
Time (min)
10
7
3
1
0.4
0.1
0 100 150
Figure C.8 Motor Overload Protection Time
Table C.7 to match drive models with available capacitor covers. Order capacitor
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Cold Start
Hot Start
Motor Current (%)
(E2-01=100 %)
200