YASKAWA CIMR-ZU A Series Programming Manual page 103

The PTC must exhibit the characteristics shown in
drive expects 3 of these PTCs to be connected in a series.
Set up overheat detection using a PTC using parameters L1-03, L1-04, and L1-05 as explained in the following sections.
L1 Motor O er eat Alarm Operation Selection (P C input)
Sets the drive operation when the PTC input signal reaches the motor overheat alarm level (oH3).
No
L1-03 Motor Overheat Alarm Operation Selection (PTC input)
Settin amp to Stop
The drive stops the motor using the deceleration time 1 set in parameter C1-02.
Settin 1 Coast to Stop
The drive output is switched off and the motor coasts to stop.
Settin 2 Fast Stop
The drive stops the motor using the Fast Stop time set in parameter C1-09.
Settin Alarm Only
The operation is continued and an oH3 alarm is displayed on the HOA keypad.
L1 Motor O er eat Fault Operation Selection (P C input)
Sets the drive operation when the PTC input signal reaches the motor overheat fault level (oH4).
No
L1-04 Motor Overheat Fault Operation Selection (PTC input)
+V
(+10.5V, 20 mA)
Branch
resistor
12 k
A2 (0-10 V)
PTC
thermistor
AC
Fi ure 1 Connection o a Motor P C
for one motor phase. The motor overload protection of the
Figure 1.60
Resistance ( )
Tr - 5K (oH3 Alarm Level) Tr
Fi ure 1 Motor P C C aracteristics
Name
Name
Drive
Jumper S1
Terminal A1/A2
Voltage/Current
Selection
V
I
A1 A2
Class H
Class F
180 ºC
150 ºC
Tr: threshold value
Temperature
Tr'
Tr + 5K (oH4 Fault Level)
Settin
0 to 3
Settin
0 to 2
1 8 L Protection Functions
an e De ault
3
an e De ault
1
1
1