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PC NC Maintenance Manual The VS-626M5
4-150
Notes on resetting faults
• To reset a fault by the digital operator after removing the cause,
depress the RESET key in fault display mode. In other modes, the
RESET key cannot reset the fault.
• Before resetting, turn OFF run command signals (FWD, REV, ORT)
that are input externally.
List Of Converter Faults
If a fault occurs during operation, protective functions are activated
(depending on the fault) and operation is stopped. The contents of the
faults are displayed on the 7-segment LED in numbers.
Table 4.36: Fault Diagnosis and Corrective Actions of Converter
Fault
No. 22
Name Contents Corrective Actions
Overcurrent Output current exceeded over-
current detection level.
Check the wiring.
Check the input supply voltage.
Check the AC reactor.
Check the load shaft (inverter, servo)
capacity.
Main circuit fuse
blown
Main circuit fuse was blown. Check for damaged transistor, load
side short circuit, grounding, etc.
Overload Output current exceeded over-
load level.
Reduce the load.
Check the load shaft (inverter, servo)
capacity.
Output overvoltage Output voltage exceeded over-
voltage level.
Detection level:
200V class: Approx. 400V
400V class: Approx. 800V
Check the input supply voltage.
Check the load shaft (inverter, servo)
capacity.
Main circuit under-
voltage
Main circuit input voltage became
lower than undervoltage detec-
tion level.
Check the input supply voltage.
Control circuit under-
voltage
Control circuit power supply
became lower than undervoltage
detection level.
Check the control supply voltage.
Servo unit power
supply fault
Control supply voltage supplied
to servo unit was not normal.
—
Power supply
frequency fault
Excessive power supply fre-
quency deviation (50Hz or 60Hz
±5%)
Check the input power waveform.
Initial charging fault Charging of main circuit capacitor
was not completed within set
time.
Replace the unit.
- YASNAC PC NC 1
- Maintenance Manual 1
- Contents 2
- Electrical Connection 4
- PC NC case 5
- Connection Between Devices 6
- Connector Layout NC Side 7
- NAC JZNC-JFC10 board 7
- 1.2 General Specifications 8
- All dimensions in millimeters 9
- 246 10
- 6 x 4.16 10
- Table 1.3: Heat Generation 12
- 2.1 Routine Inspection 14
- 2.2 Battery 14
- 2.3 Servo Motor 16
- 2.5 Touch Screen 18
- 2.6 Control Panel 19
- Chapter 4: Troubleshooting 22
- Troubleshooting (1) 25
- Table 4.11: Jog Feedrate 42
- Deceleration switch signal 46
- (*DCX signal) 46
- Figure 4.2: Spindle Rotation 49
- During boot up of the PC NC 53
- 01:Overcurrent 56
- 05: Overload 57
- 11:Output overvoltage 57
- 12:Power circuit low voltage 58
- F0:ROM is defective 62
- F1:EEPROM is defective 62
- F5:CPU is defective 63
- .. : Control card fault 63
- AL-01:Overcurrent 68
- AL-02:Ground fault 69
- AL-31:Motor overspeed 75
- AL-33:The load is abnormal 76
- AL-60:Tuning incompletion 80
- AL-65:INC signal error 83
- AL-A4:YENET1200 card error 3 87
- AL-F0:ROM is defective 92
- AL-F2:EEPROM is defective 2 93
- AL-F3:EEPROM is defective 3 93
- AL-F4:EEPROM is defective 4 93
- The motor does not rotate 95
- The motor reverses 96
- The motor does not stop 97
- Cause and measures 100
- The VS-626M5 101
- Operation 103
- Operation Of Digital Operator 104
- Maintenance and Inspection 105
- 4.3 Receiving 107
- 2 7P5 5 E * 108
- Upper and Lower Covers Opened 109
- 4.4 Installation 111
- Heat Sink 112
- (a) Front View (b) Side View 112
- (a) Front View 113
- (b) Side View 113
- 4.5 Wiring 114
- AC Reactor (L) (Note) 115
- P1N1 Power Cable 116
- A general-purpose noise 119
- Figure 4.14: Grounding 122
- 7. Main Circuit Configuration 125
- 8. Parts Required for Wiring 129
- 9. Control Signal Connectors 135
- Wiring The Control Circuit 137
- 1. Control Signals 137
- 51CN 5CN, 52CN 143
- 3CN (Option) 144
- (a) 0V Common 146
- (b) +24V Common 146
- (c) External Common 146
- 4.6 Operation 149
- (a)@Flange-mounted Type 150
- (b)@Foot-mounted Type 150
- Run Command 151
- (Fault occurrence No.) 152
- 4.7 Digital Operator 154
- RUN STOP 156
- Note: “—” is not displayed 157
- Numbers Letters 157
- 65432 10 158
- Display Example 166
- 626M5 and the VS-656MR5 168
- 4.9 Troubleshooting 170
- Fault Cause Corrective Action 177
- Chapter 5: Adjustments 181
- Location Explanation 182
- 6.1 CPU Rack 183
- 6.2 CRT Display Unit 190
- 6.3 Floppy Disk Drive Unit 199
- 6.4 NC Power Supply 200
- 6.6 Noise Filter 202
- Chapter 7: Memory Option 203
- 8.1 NC Data Handling 205
- Restore Kit Contents 235
- 1. External CD ROM Drive 235
- • EXP computer, INC CD-865 235
- 26. Click the Next button 243
- 7. Touch the Close button 250
- 10. Touch the Start button 253
- Common Instructions 254
- Next button 254
- Yes button to agree 255
- 8.4 CNC Card Software Update 274
- ON < 275
- 8.5 Manual Page Customization 284
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