YASKAWA A1000 Technical Manual

5.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 273
Parameter Details
5
Figure 5.94
Figure 5.94 Temperature and Resistance of NTC Thermistor
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.
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.
 L1-17: Motor 2 Thermistor Selection (NTC)
Note: This parameter is available in models CIMR-A4A0930 and 4A1200.
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.
 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.
Setting 0: Ramp to stop
The drive stops the motor using the deceleration time1 set in parameter C1-02.
No. Name Setting Range Default
L1-15 Motor 1 Thermistor Selection (NTC) 0, 1 0
No. Name Setting Range Default
L1-16 Motor 1 Overheat Temperature 50 to 200C 120C
No. Name Setting Range Default
L1-17 Motor 2 Thermistor Selection (NTC) 0, 1 0
No. Name Setting Range Default
L1-18 Motor 2 Overheat Temperature 50 to 200C 120C
No. Name Setting Range Default
L1-19 Operation at Thermistor Disconnect (THo) (NTC) 0 to 3 3
100
1,000
10,000
100,000
21911
3267
769
242
-20
0
50
100
150
Temperature (
° C)
Resistance: R (140) = 0.3 kΩ ±5%
Resistance (Ω)
B parameter: B (25/140) = 3500 K ±2%

YASKAWA A1000 Specifications

General

Type	AC Drive
Series	A1000
Input Voltage	200-240V, 380-480V
Frequency Range	0-400 Hz
Horsepower Range	0.5 to 1000 HP
Power Range	0.4 to 630 kW
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Braking	Dynamic Braking
Communication	Modbus
Safety	Safe Torque Off (STO)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Operating Temperature	-10 to +50°C
Storage Temperature	-20 to 60°C
Humidity	5 to 95% RH (non-condensing)
Enclosure	IP20