Lenze i700 - Motor phase failure monitoring

8 Monitoring functions
8.7 Motor phase failure monitoring
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Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
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8.7 Motor phase failure monitoring
0x2D45 | 0x3545 - Motor phase failure detection
 Note!
In the Lenze setting, the monitoring function is not activated!
Sub. Name Lenze setting Data type
1 Motor phase failure 1: Response 0: No Response UNSIGNED_8
2 Motor phase failure 1: Current threshold 5.0 % UNSIGNED_8
3 Motor phase failure 1: Voltage threshold 10.0 V UNSIGNED_16
4 Motor phase failure 2: Response 0: No Response UNSIGNED_8
Subindex 1: Motor phase failure 1: Response
Monitoring 1 (during operation):
Response during tripping
Selection list (Lenze setting printed in bold)
0 No response
1Fault
2 Warning
 Write access  CINH  OSC  P  RX  TX UNSIGNED_8
Subindex 2: Motor phase failure 1: Current threshold
Monitoring 1 (during operation):
Selection of the current threshold for activation
•100% ≡ maximum axis current (0x2DDF:2
or 0x35DF:2 for axis B)
• Background: In order to be able to reliably detect the failure of a motor phase, a certain motor current for the
current sensors must flow first. The monitoring function therefore is only activated if, in the case of a servo
control, the setpoint of the motor current, and in the case of a V/f characteristic control, the actual value of the
motor current (display in 0x6078
or 0x6878 for axis B) has exceeded the current threshold set here.
Setting range (min. value | unit | max. value) Lenze setting
1.0 % 10.0 5.0 %
 Write access  CINH  OSC  P  RX  TX Scaling: 1/10 UNSIGNED_8
Subindex 3: Motor phase failure 1: Voltage threshold
Monitoring 1 (during operation): Selection of the voltage threshold for monitoring several motor phases
• The V/f characteristic control enables the detection of several failed motor phases during operation.
• Monitoring with regard to a failure of several motor phases is active if
• a response other than "0: No response" is set in subindex 1, and
• the motor voltage exceeds the voltage threshold set here.
• The "Motor disconnected" error message is output if the motor current is lower than the device-dependent
threshold value for more than 20 ms.
• The monitoring function for the failure of several motor phases can be deactivated if the value "1000.0 V" is set
here.
Setting range (min. value | unit | max. value) Lenze setting
0.0 V 100.0 10.0 V
 Write access  CINH  OSC  P  RX  TX Scaling: 1/10 UNSIGNED_16