YASKAWA P1000 Technical Manual page 238

5.8 L: Protection Functions
No.
L1-04 Motor Overheat Fault Operation Selection (PTC input)
Setting 0: Ramp to Stop
The drive stops the motor using the deceleration time 1 set in parameter C1-02.
Setting 1: Coast to Stop
The drive output is switched off and the motor coasts to stop.
Setting 2: Fast Stop
The drive stops the motor using the Fast Stop time set in parameter C1-09.
n L1-05: Motor Temperature Input Filter Time (PTC input)
Sets a filter on the PTC input signal to prevent erroneous detection of a motor overheat fault.
No.
L1-05 Motor Temperature Input Filter Time (PTC input)
n L1-13: Continuous Electrothermal Operation Selection
Determines whether to hold the current value of the electrothermal motor protection (L1-01) when the power supply is
interrupted.
No.
L1-13
Setting 0: Disabled
Setting 1: Enabled
Setting 2: Enabled (RTC)
n Motor Protection Using an NTC Thermistor Input
Motor protection is possible for models 4A0930 and 4A1200 by connecting the NTC thermistor input in the motor windings
to one of the drive analog input terminals.
This enables the drive to provide torque compensation in response to changes in motor temperature and protect the motor from
overheating.
If the NTC input signal using the drive multi-function analog input terminal exceeds the overheat alarm level set to L1-16,
then "oH5" will flash on the digital operator screen. The drive will respond to the alarm according to the setting of L1-20
(default setting is to continue operation when an oH5 alarm occurs).
Figure 5.69 shows a circuit using the NTC thermistor and the terminal resistance values. Set jumper S1 on the drive to for
voltage input when wiring the NTC thermistor input to terminal A2 on the drive.
Note: This example assumes that H3-10 = 17, H3-09 = 0, and that jumper S1 has been set for voltage input.
238
Name
Name
Name
Continuous Electrothermal Operation Selection
Voltage Divider
2 kW
NTC Thermistor
Figure 5.69 Motor Protection Circuit Using NTC Input
Setting Range
Setting Range
0.00 to 10.00 s
Setting Range
Drive
+V
(+10.5 V, 20 mA)
A2 (0-10 V)
DIP Switch S1
AC
V I
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Default
0 to 2
Default
0.20 s
Default
0 to 2
1
1