Mitsubishi Electric Q172CPU User Manual Page 194
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6 INSPECTION AND MAINTENANCE
(2) Output circuit troubleshooting and corrective action
This section describes troubleshooting with output circuits and their corrective
actions.
Output Circuit Troubleshooting and Corrective Action
Condition Cause Corrective action
Example 1
Overvoltage
applied to
load when
output turns
OFF
• If load is internally half-wave rectified
(some solenoids are like this).
Output module
D1
Load
1)
2)
• With polarity of power supply 1), C is charged.
With polarity 2),the C charge voltage plus the
power supply voltage is applied across D1.
Max. voltage is approx. 2.2E.
• Connect a resistor between several tens k
and several hundreds k across the load.
Load
Resistor
This method causes no problems with
output terminals but lead to deterioration
or burnout of load internal diodes.
Example 2
Load does
not turn OFF
(Triac output).
• Leakage current due to built-in surge
suppressor.
Output module
Load
Leakage current
• Connect a resistor across the load.
Load
Resistor
If long wiring exists between the output
card and the load, leakage currents also
arise due to wiring capacity.
Example 3
Time period
fluctuates
when load is
a CR timer
(Triac output)
Output module
CR timer
Leakage current
• Drive a relay and use the contacts to drive
the CR timer.
CR
timer
Resistor
Calculate resistor
constant from load.
Be careful of example 1, as some
timers are half-wave rectified
internally.
- MOTION CONTROLLERS 1
- SAFETY PRECAUTIONS 2
- (1) System structure 4
- CAUTION 10
- 1. OVERVIEW 18
- (Note-2) : SSCNET: S 19
- 2. SYSTEM CONFIGURATION 20
- SSCNET cable 21
- (a) MR-H BN 39
- (c) FR-V5 0 41
- (4) Software packages 41
- (a) PLC software package 42
- 2.3 General Specifications 43
- (2) Q173CPU/Q172CPU 46
- Q172CPU(N) 48
- (a) Module specifications 49
- 2.4.2 Power supply module 55
- 100-120VAC 58
- (When using the Q173CPUN-T.) 61
- (4) I/O allocations 64
- (1) Q172LX name of parts 65
- (b) Input 66
- (a) Servo external signals 67
- • Tracking enable signal 73
- Q173CPU(N)/ 74
- Cable length 10m (32.81ft.) 76
- (b) Q172EX-S2/Q172EX-S3 77
- (a) Specifications 78
- Battery Specifications 78
- (b) Battery replacement 78
- Q173PX-S1 80
- (Note-1)(Note-2) 81
- (Duty ratio: 50% 25%) 86
- 20 s or more 86
- A4 A3 A2 87
- B4 B3 B2 87
- CN1A CN1B 101
- 2 SYSTEM CONFIGURATION 102
- (h) FR-V5NSCBL 107
- (a) MR-H-BN configuration 108
- (b) MR-J2 -B configuration 108
- 1) Example of Q173CPU(N) 110
- 2) Example of Q172CPU(N) 112
- 2.4.10 External battery 115
- 3. DESIGN 120
- 3 DESIGN 123
- 3.2 External Circuit Design 123
- MR-J2-03B5 124
- Electro 124
- (For A31TU-DN ) 125
- (For A31TU-D3 ) 127
- MC1 N0 M10 129
- (2) Grounding 131
- Forced stop 132
- Internal 132
- Wpw= (I 136
- 3.4 Design Checklist 139
- 4 INSTALLATION AND WIRING 141
- (1) Fitting dimensions 142
- Vertical Flat 143
- Motion CPU 146
- PC connector 147
- Battery cable 148
- CPU/BAT connecto 148
- Battery unit 148
- (Q170BAT) 148
- TU connector 149
- (3) Grounding 156
- [Servo data setting 162
- Power supply module 171
- PLC CPU module 171
- Motion CPU module 171
- I/O module 172
- 6.3 Periodic Inspection 173
- 6.4 External Battery 174
- (Note-1) 175
- (Note-3) 175
- (Note-2) 175
- MITSUBISHI 176
- LITHIUM BATTERY 176
- Lithium battery 178
- Memory card socket 178
- Is the power 182
- 132VAC or 170 to 264VAC? 182
- "RUN" LED 184
- For the case of 1) 184
- For the case of 2) 184
- When started the latch clear 186
- Are the output 188
- USB driver installed 190
- Win 98/2000/XP? 190
- DC input 192
- (plus common) 192
- Input module 192
- Resistor 192
- Output module 194
- APPENDICES 196
- PPENDICES 198
- (a) Q172J2BCBL M(-B) 198
- 1) Model explanation 198
- 2) Connection diagram 198
- (b) Q172HBCBL M(-B) 199
- Q173DVCBL M 200
- (d) Q173J2B CBL M 201
- (e) Q173HB CBL M 202
- :Twisted pair cable 203
- (h) MR-HBUS M 205
- (2) MR-JHSCBL M-L/H 207
- (a) Model explanation 207
- (b) Connection diagram 207
- (3) Q170ENCCBL M 208
- (Note) 209
- Q170TUD3CBL3M 211
- Q170TUDNCBL3M 212
- 27.4(1.08) 215
- 98(3.86) 215
- 114.3(4.50) 215
- 46(1.81) 215
- 79.5(3.13) 215
- (3) Q172CPUN-T Module 216
- (4) Q173CPUN-T Module 216
- (5) Q172CPU Module 217
- (6) Q173CPU Module 217
- (1) Q173PX 220
- (2) Q173PX-S1 220
- (2) Q64P 221
- (1) Dividing unit (Q173DV) 222
- (2) Battery unit (Q170BAT) 222
- APPENDIX 2.7 Connector 223
- (6) A31TUD3TM 227
- Effective dimension 229
- Keyway Dimensional Diagram 229
- WARRANTY 233
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