YASKAWA V1000 Series Technical Manual page 188

5.8 L: Protection Functions
No.
L1-05
Detailed Description
L1-03 and L1-04 determine how the motor is protected from overheat. Alarm OH3 and fault OH4 can be set to appear on the LED or LCD operator by
setting the motor temperature input filter time constant to parameter L1-04.
• L1-03 Settings
Setting
0
1
2
3
• L1-04 Settings
Setting
0
1
2
• Example Using PTC Thermistor
Note: When using terminal A2, set DIP switch S1 to the voltage side.
PTC Thermistor Characteristics
The following diagram shows the characteristics of temperature and resistance on the PTC thermistor.
188
Name
Motor Temperature Input Filter Time
Ramp to Stop
Coast to Stop
Fast Stop (stops at the deceleration time set to C1-09)
Alarm Only ("oH3" flashes on the operator)
Ramp to Stop
Coast to Stop
Fast Stop (stops at the deceleration time set to C1-09)
multi-function input
+V
(+10.5V, 20 mA)
branch
resistor
A2 (0-10 V)
PTC
thermistor
AC
Figure 5.70 Setting Up Motor Overheat Protection
Resistance (W)
1330
550
Tr - 5
Figure 5.71 PTC Thermistor Temperature: Resistance
Setting Range
0.00 to 10.00
Description
Description
DRIVE
MA
MB
multi-function
output (contact)
MC
P1
multi-function
P2
output (photo-coupler)
PC
Class F Class H
150°C 180°C
Tr: threshold value
Temperature
Tr
Tr
Tr + 5
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Default Page
0.20 sec −