YASKAWA A1000 Technical Manual page 273

Figure 5.94
Resistance (Ω)
100,000
L1-15 to L1-20 can determine the overheat protection settings using the NTC thermistor input. Parameter descriptions
are listed below.
Note: L1-15 to L1-20 are available in models CIMR-A4A0930 and 4A1200.

L1-15: Motor 1 Thermistor Selection (NTC)
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
No.
L1-15
Setting 0: Disable
Setting 1: Enable

L1-16: Motor 1 Overheat Temperature
Sets the temperature that will trigger an overheat fault (oH5) for motor 1.
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
No.
L1-16

L1-17: Motor 2 Thermistor Selection (NTC)
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
No.
L1-17
Setting 0: Disable
Setting 1: Enable

L1-18: Motor 2 Overheat Temperature
Sets the temperature that will trigger an overheat fault (oH5) for motor 2.
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
No.
L1-18

L1-19: Operation at Thermistor Disconnect (THo) (NTC)
Determines drive operation when a thermistor disconnect fault occurs (THo).
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
No.
L1-19
Setting 0: Ramp to stop
The drive stops the motor using the deceleration time1 set in parameter C1-02.
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
21911
10,000
3267
1,000
100
50
0
-20
Resistance: R (140) = 0.3 kΩ ±5%
B parameter: B (25/140) = 3500 K ±2%
Figure 5.94 Temperature and Resistance of NTC Thermistor
Name
Motor 1 Thermistor Selection (NTC)
Name
Motor 1 Overheat Temperature
Name
Motor 2 Thermistor Selection (NTC)
Name
Motor 2 Overheat Temperature
Name
Operation at Thermistor Disconnect (THo) (NTC)
769
242
Temperature (°C)
100
150
Setting Range
Setting Range
50 to 200C
Setting Range
Setting Range
50 to 200C
Setting Range
5.8 L: Protection Functions
Default
0, 1 0
Default
120C
Default
0, 1 0
Default
120C
Default
0 to 3 3
5
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