Drive faults, Communications fault, P7u drive faults – Yaskawa P7 Metasys N2 User Manual
Page 47: Troubleshooting – a - 9

Troubleshooting – A - 9
Drive Faults
Communications Fault
Table A.6 - Drive Faults
Fault
Description
Cause
Corrective Action
CE
Memobus Communication Error
Connection is broken or master has
stopped communicating
Check all connections
Verify all Metasys N2 software configurations
P7U Drive Faults
Table A.7 - Description of Fault Numbers
Fault Number
Description
1
DC Bus Fuse Open (PUF)
2
DC Bus Under Voltage (UV1)
3
Control Power Supply Under Voltage (UV2)
4 MC
Answerback
(UV3)
5
Short Circuit Fault
6
Ground Fault (GF)
7 Over
Current
(OC)
8
DC Bus Over Voltage (OV)
9 Overheat
Fault
(OH)
10
Overheat 1 Fault (OH1)
11
Motor Overload (OL1)
12
Inverter Overload (OL2)
13
Over Torque Detection 1 (OL3)
14
Over Torque Detection 2 (OL4)
15 N/A
16 N/A
17
External Fault 3 (EF3)
18
External Fault 4 (EF4)
19
External Fault 5 (EF5)
20
External Fault 6 (EF6)
21
External Fault 7 (EF7)
22
External Fault 8 (EF8)
23
Drive Fan Fault
24
Over Speed Fault
25 N/A
26 N/A
27 N/A
28
Output Phase Loss (LF)
29
Overheat 3 (OH3)
30
Operator Connection Fault (OPR)
31 Err
Fault
32
Overheat 4 Fault (OH4)
33
Memobus Com Error (CE)
34 N/A
35 N/A
36 N/A
37 N/A
38 N/A
39
External Fault 0 (EF0)
40
PID Feedback Loss
41 N/A
42 N/A
43 N/A