YASKAWA A1000 Technical Manual page 271


L1-03: Motor Overheat Alarm Operation Selection (PTC input)
Sets the drive operation when the PTC input signal reaches the motor overheat alarm level (oH3).
No.
L1-03
Setting 0: Ramp to stop
The drive stops the motor using the deceleration time 1 set in parameter C1-02 .
Setting 1: Coast to stop
The drive output is switched off and the motor coasts to stop.
Setting 2: Fast Stop
The drive stops the motor using the Fast Stop time set in parameter C1-09.
Setting 3: Alarm only
The operation is continued and an oH3 alarm is displayed on the digital operator.

L1-04: Motor Overheat Fault Operation Selection (PTC input)
Sets the drive operation when the PTC input signal reaches the motor overheat fault level (oH4).
No.
L1-04
Setting 0: Ramp to stop
The drive stops the motor using the deceleration time 1 set in parameter C1-02 .
Setting 1: Coast to Stop
The drive output is switched off and the motor coasts to stop.
Setting 2: Fast Stop
The drive stops the motor using the Fast Stop time set in parameter C1-09.

L1-05: Motor Temperature Input Filter Time (PTC input)
Used to set a filter on the PTC input signal in order to prevent a motor overheat fault from being mistakenly detected.
No.
L1-05

L1-08: OL1 Current Lvl
Sets the reference current for motor thermal overload detection for motor 1 in amperes.
If L1-08 is set to 0.0A, E2-01 (E5-03 when in PM control mode) is used as a reference for motor overload protection. If
L1-08 is set to any other, that value is used as a reference for motor overload protection.
Note: This parameter is not available in models CIMR-A4A0930 and 4A1200.
No.
L1-08
<1> Display is in the following units.
 CIMR-A2A0004 to 2A0040, CIMR-A4A0002 to 4A0023: 0.01 A units
 CIMR-A2A0056 to 2A0312, CIMR-A4A0031 to 4A0675: 0.1 A units
<2> Cannot be set to a value smaller than 10% of drive rated current if the current level is set to a value greater than 0.0 A.
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Name
Motor Overheat Alarm Operation Selection (PTC input)
Name
Motor Overheat Fault Operation Selection (PTC input)
Name
Motor Temperature Input Filter Time (PTC input)
Name
OL1 Current Lvl
5.8 L: Protection Functions
Setting Range
0 to 3
Setting Range
0 to 2
Setting Range
0.00 to 10.00 s
Setting Range
0.0 A or 10 to 150% of drive rated
current
<1> <2>
Default
3
Default
1
Default
0.20 s
5
Default
0.0 A
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