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Introduction Terminology
1 - 6
1.3 Terminology
The terms and abbreviations below are important for servo amplifiers and are used frequently in this
guide.
Direction of rotation of electric motors
The direction (or sense) of rotation of electric motors is defined looking at the end of the motor shaft.
If the motor has two shaft ends the direction is defined looking at the main drive shaft end, which is
defined as the shaft end away from the end where the cooling fan or the brake are installed.
● Forward
Counterclockwise (CCW)/ Left
● Reverse
Clockwise (CW)/ Right
Safety Function
The servo amplifier series MR-J4 supports the Safe Torque Off (STO) function described in IEC/EN
61800-5-2. STO is a stop function used to shut down energy to motors which exert torque. The servo
amplifier electronically cuts off the power output from the servo amplifier to the servo motor.
The purpose for this safety function is as follows.
– Uncontrolled stop according to stop category 0 of IEC 60204-1
– Designed to prevent unexpected start-up
Operating modes of the servo amplifier
The MR-J4-A servo amplifier can be set to different operating modes by parameter setting.
● Position control mode
An up to 4 Mpps high-speed pulse train is used to control the speed and direction of a motor and
execute precision positioning of 4,194,304 pulses/rev (22 bits) resolution.
A torque limit is imposed on the servo amplifier by the clamp circuit to protect the power transistor
in the main circuit from overcurrent due to sudden acceleration/deceleration or overload. This
torque limit value can be changed to any value with an external analog input or the parameter.
● Speed control mode
An external analog speed command (0–±10 V DC) or parameter-driven internal speed command
(max. 7 speeds) is used to control the speed and direction of a servo motor smoothly. There are
also the acceleration/deceleration time constant setting in response to speed command, the
servo lock function at a stop time, and automatic offset adjustment function in response to
external analog speed command.
● Torque control mode
An external analog torque command (0–±8 V DC) or parameter-driven internal torque command
is used to control the torque output by the servo motor.
To protect misoperation under no load, the speed limit function (external or internal setting) is
also available for application to tension control, etc.
● Positioning mode (only RJ type)
Automatic and manual positioning modes are supported by point table, program and indexer for
normal operation as well as for home position return. Home position return can be done by
different methods like dog type, count type, data set type, stopper type etc.
- MR-J4-A(-RJ)/A4(-RJ) 1
- MR-J4-B(-RJ)/B4(-RJ) 1
- MR-J4W-B 1
- About This Manual 3
- Safety Guidelines 7
- S001260E 12
- S001261E 12
- Typographic Conventions 13
- Table of Contents 15
- 1 Introduction 19
- 1.1.3 Servo motors 21
- 1.2 Environmental conditions 23
- 1.3 Terminology 24
- Control mode Description 25
- Introduction Terminology 26
- 2 Introduction of the devices 27
- MR-J4-500B4(-RJ) 28
- MR-J4-22KB(4)(-RJ) 28
- MR-J4W2-B 29
- MR-J4W3-B 29
- 2.5.1 200 V class 31
- 2.5.2 400 V class 33
- Front cover 36
- Setting tab 37
- 2.7 Rating plate 38
- 3.1 Rotatory servo motors 39
- 3.1.2 Rating plate 40
- HG-MR 3 42
- HG-SR 43
- Encoder connector 44
- Brake connector 44
- Power connector 44
- HG-JR 45
- HG-RR 3 47
- Zeichnung HG-RR153B.eps 48
- HG-UR 2 49
- 3.2 Linear servo motors 51
- LM-H3P - P - 52
- LM-U2P - M - 53
- LM-U2P2 - M - 2SS0 53
- Thermistor lead wire 54
- Power lead wire 54
- LM-F P - M - 1SS0 55
- LM-K2 P - M - 56
- 3.3.1 Model overview 57
- TM-RFM 58
- 4 Installation and wiring 59
- MR-J4-A Signalstecker.eps 63
- Only for MR-J4-A 69
- Only for MR-J4-A-RJ 69
- MR-J4-B Signalstecker.eps 70
- MR-J4W3-B Signalstecker.eps 73
- 4.3 Wiring the interfaces 76
- 4.3.3 Analog interfaces 78
- CN3CN3CN3 79
- 4.4.2 USB interface 80
- 4.6.1 MR-J4-B(-RJ) 83
- 4.6.2 MR-J4W-B 85
- MR-J4W-B_DIP switch SW2.eps 88
- 4.8 Servo motor 89
- Erdung MR-J4W.eps 90
- 4.9 Forced stop 93
- 4.10 Wiring examples 94
- 4.11.2 Wiring 102
- 4.11.3 Optional EMC filters 103
- 5Startup 105
- 5.2.2 Stop of operation 107
- 5.2.3 Test operation 108
- 5.2.5 Actual operation 109
- 5.2.4 Parameter setting 109
- 5.3.2 Stop of operation 111
- 5.3.3 Test operation 112
- MODE UP DOWN SET 113
- To/from previous table 120
- Option setting 120
- Positioning setting 120
- 6.1.6 Display examples 124
- 6.1.8 Alarm mode 125
- 6.1.9 Parameter mode 127
- 6.1.10 Test operation mode 129
- Operation Screen control 133
- Stop Click the “Stop” button 133
- 6.2.1 Overview 134
- 6.2.2 Scrolling display 135
- 6.2.3 Display sequence 136
- 6.2.4 Test operation 137
- Set SW2-1 to “OFF (down)” 141
- The decimal point flickers 141
- 6.3.1 Overview 142
- 6.3.2 Scrolling display 143
- 6.3.3 Display sequence 144
- 6.3.4 Test operation 145
- 2 3 4 5 6 147
- 7 Parameters 151
- Parameters MR-J4-A 154
- MR-J4-A Parameters 155
- 7.2 MR-J4-A-RJ 164
- MR-J4-A-RJ Parameters 167
- Parameters MR-J4-A-RJ 168
- 7.3 MR-J4-B(-RJ) 178
- MR-J4-B(-RJ) Parameters 181
- Parameters MR-J4-B(-RJ) 182
- 7.4 MR-J4W-B 189
- Parameters MR-J4W-B 192
- MR-J4W-B Parameters 193
- 7.5 Other parameters 200
- 8 Troubleshooting 201
- Series Servo Motor 207
- HG-SR HG-SR51, HG-SR52 207
- 8.4 Remedies for alarms 227
- 8.5 Remedies for warnings 228
- AAppendix 229
- ✔ — ✔✔——✔ 235
- ✔ — ✔✔— ✔ — 235
- 0 mV ✔✔✔✔✔✔✔ 235
- A.2.1 Status Display 245
- 0 mV ✔✔✔✔✔✔— 253
- A.3.1 Status display 266
- 0 mV ✔✔✔✔ 270
- A.4.1 Status display 280
- MIDDLE EAST REPRESENTATIVE 300
- AFRICAN REPRESENTATIVE 300
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