Name: Mitsubishi FREQROL-SF
Brand: Mitsubishi
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2.6

Checking diode stack

(a)

PT type

lb)

type

Copper bar

(Note) The following figures show the relationship bet-

ween the terminal symbols and circuit diagram of

the above diode stack.

(ii) Check the electric continuity of each two terminals

in accordance with the criterion list and check that

the diode stack is good or no good.

(First,

check the electric continuity between P and

N-1

(i)

Remove the leads which are

nals P and N.

connected to the

termi-

-68-

Default Chapter2
- Table of Contents2
1 Troubleshooting6
- Status Display and Diagnosis10
- Status Display and Diagnosis from Spindle Amplifier10
- Status Display and Diagnosis from NC15
- Checking Method and Countermeasures of Trouble18
  - Classification a18
- When the Amplifier Is Turned on at the First Time18
  - It Does Not Correctly Work18
- The Motor Which Has Normally Rotated Stops Abruptly20
- The Equipment Does Not Work in Occasions21
  - Alarm Appears, after Turning on and off the Power or Resetting the Equipment, the Equipment Normally Works21
- Checking Method and Remedy of Trouble Classification22
- When the Power Is Turned On, the Display of the Operation Panel Does Not Appear at All22
- When the Power Is Turned On, the Display on the23
- An Alarm Appears Ont He Display on the Printed Circuit Board (SF-CA Card) of the Amplifier25
- The Motor Does Not Rotate46
  - The Status Display Mode48
- The Motor Does Not Rotate at a Speed Being Specified48
- The Motor Vibrates and Is Getting Noisier During49
  - Rotations49
  - The Motor Overshoots in Speed or Hours51
- The Cutting Force Degrades52
- The Orientation of the Spindle Is Not Correct53
- The Acceleration/Deceleration Time Increases58
- The Speed Detection Signal, up to Speed Signal, or Zero Speed Signal Is Not Issued59
- The Tapping Operation Cannot be Correctly Performed60
- The Threading Operation Cannot be Correctly62
  - Performed62
2 Checking and Replacing Parts63
- Replacing Fuses64
- Replacing Thermal Protectors64
- Replacing Amplifier Cooling Fan64
- Replacing Printed Circuit Board66
- Replacing SF-PW Module66
- Replacing SF-OR or SF-10 Card67
- Replacing SF-TL Card68
- Replacing SF-CA Card69
- Checking Transistor Module70
  - Both in the Power Side and Regeneration Side)70
- Checking Diode Stack73
- Replacing Transistor Module and Diode Stack75
- Replacing Motor Cooling76
- Adjusting and Replacing Motor Built-In Encoder79
- Adjusting Printed Circuit Board79
- Replacing Encoder and Printed Circuit Board82
3 Spindle Orientation Control Circuit84
- Structure85
- Spindle Orientation Using Magnesensor (1 Point)85
- Spindle Orientation Using Encoder87
  - (4096 Points, with Index Function)87
- Control Circuit and Parameter Setting89
- Where the Speed Selection Signal Function Is89
  - Provided (SF-OR Card)89
- Where the Equipment Is Linkedwith the NC through94
4 Adjusting Synchronous Tap122
- Setting Parameters122
- Checking Operation123
Appendix 1 Machine Connection125
Appendix L-L Power Connection125
Appendix L-2 Connection with Motor (for Standard Motor)127
Appendix L-3 Machine Connection127
- (Without Orientation (Standard))127
Appendix L-4 Machine Connection128
Appendix L-5 Machine Connection(Bus Linkage with NC)129
Appendix L-6 Machine Connection(Bus Linkage with NC)130
Appendix L-7 Machine Connection131
Appendix 2 Cable Connections132
Appendix 2-L Cable Connection132
Appendix 2-2 Cable Connection133
Appendix 2-3 Cable Connections (Bus Linkage with NC)134
Appendix 3 Cable and Connector Specifications135
Appendix 4 Main Circuit Configuration143
Appendix 5 Spindle Part Layout144
- Layout151
Appendix 6153
- Major Part Table153
Appendix 7 Major Part Table159
Appendix 8 Display Lamps (LED Diodes)159
Appendix 9 Check Terminals160
Appendix 10 Parameter Setting List and Short Pin Switch174
Appendix 12180
- Maintenance Instruments180
Appendix 11 Structural Components181
- Reference: Setting and Adjustment181

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Mitsubishi FREQROL-SF Specifications

General

Brand	Mitsubishi
Model	FREQROL-SF
Category	DC Drives
Language	English

Mitsubishi FREQROL-SF User Manual

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Mitsubishi FREQROL-SF Specifications