4-170
08-35
Motor Overheat Fault Selection
Range
【
0
】
:
Disabled
【
1
】
:
Deceleration to Stop
【
2
】
:
Free run to Stop
【
3
】
:
Continue Running
08-36
PTC Input Filter Time Constant
Range
【
0.00 ~ 5.00
】
08-39
Delay Time of Motor Overheat Protection
Range
【
1 ~ 300
】
Sec
08-42
PTC Protection Level
Range
【
0.1 ~ 10.0
】
V
08-43
PTC Restart Level
Range
【
0.1 ~ 10.0
】
V
08-44
PTC Warning Level
Range
【
0.1 ~ 10.0
】
V
Motor Overheat Fault Selection
Enabled the motor overheat protection by using the PTC resistor built-into the motor. Connect the PTC resistor
between AI2 and GND and a resistor R between AI2 and +10V, see figure 4.3.65(b)
08-35=0:
Motor overheats fault function is off.
08-35=1:
When the motor is overheating, decelerating to stop.
08-35=2:
When the motor is overheating, coast to stop.
08-35=3:
When the motor is overheating, continue running until value set in 08-42 is reached.
08-35=1 ~ 2:
The inverter will display [OH4 Motor Temp Warning] when the motor temperature increases and AI2
voltage level rises above the value set in 08-44. In this condition the motor will decelerate or coast to stop
depending on setting 08-35=1 ~ 2.
08-35=3:
The inverter will display [OH3 Motor Temp Warning] when the motor temperature increases and AI2
voltage level rises above the value set in 08-44. In this condition the motor will continue running. If AI2 voltage
level rises above the value set in 08-42 for the time specified in 08-39 the motor coast to stop.
08-35=1, 2 or 3:
When the motor cools down and AI2 voltage level falls below the value in 08-43, [OH3/OH4
Motor Overheat] will reset.
Note:
The resistor (PTC) according to the British Standards Institution:
Tr is 150°C for Class F and is 180°C for Class H
Tr - 5°C : RT
≦
550Ω, insert value of RT into formula (1) and set 08-43 to the calculated value.
Tr+ 5°C: RT
≧
1330Ω, put the value of RT in formula (1), and set 08-44 to the calculated value..
Formula (1) can also be used for different values of PTC resistors.
