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LVD Sercos III Servo Drive SercosQuick Start Guide Revision 1.0
LVD Sercos III
Quick Start Guide 3
Revision History
Doc. Rev. Date Remarks
1.0 Nov.2013 Preliminary release
0.1 Apr. 2012 Initial release
Firmware Revision
Software (GUI) Revision
Copyright Notice © 2013 Servotronix Motion Control Ltd.
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means without prior written permission of Servotronix.
Disclaimer The information in this manual was accurate and reliable at the time of its release. Servotronix Motion Control Ltd. reserves the right to change the specifications of the product described in this manual without notice at any time.
Trademarks Sercos is a trademark of Sercos International.
All other proprietary names mentioned in this manual are the trademarks of their respective owners.
Contact Information Servotronix Motion Control Ltd. 21C Yagia Kapayim Street Petach Tikva 49130, Israel
Tel: +972 (3) 927 3800 Fax: +972 (3) 922 8075
Website: www.servotronix.com
Technical Support If you need assistance with the installation and configuration of the LVD Sercos III drive, contact Servotronix technical support: [email protected]
LVD Sercos III
4 Quick Start Guide
LVD Sercos III
Quick Start Guide 5
Contents 1 Introduction _________________________________________________ 7
LVD Sercos III Overview..................................................................................... 7 System Architecture........................................................................................... 7
2 Specifications ________________________________________________ 9 Mechanical Specifications.................................................................................... 9 Power Specifications .......................................................................................... 9 Feedback Specifications ..................................................................................... 10
Incremental Encoder ................................................................................. 10 Halls ....................................................................................................... 11
I/O Specifications ............................................................................................. 12 Digital Inputs / External Enable .................................................................. 12 Digital Output........................................................................................... 13 Analog Inputs ........................................................................................... 13
Environmental Specifications .............................................................................. 14
3 Installation _________________________________________________ 15 Mechanical Installation ...................................................................................... 15
Mounting the Drive ................................................................................... 15 Mounting Multiple Drive Units ..................................................................... 15
Drive Address DIP Switch – SW2 ........................................................................ 15 Connectors and Pin Assignments ........................................................................ 16
Realtime Ethernet ..................................................................................... 16 Incremental Encoder and Halls - J18 ........................................................... 18 Absolute Encoder / Secondary Incremental Connector - J16 ........................... 19 I/O - J14 ................................................................................................. 20 Power and Motor - P7 ................................................................................ 21 Logic Power - P2 ....................................................................................... 22 USB ........................................................................................................ 23
4 Wiring _____________________________________________________ 24 Wiring Guidelines.............................................................................................. 24 System Electrical Drawings ................................................................................ 24 Power Supply ................................................................................................... 26 Motor .............................................................................................................. 26
DC Motor Wiring ....................................................................................... 26 Brushless DC (BLDC) Motor Wiring .............................................................. 27 Stepper Motor Wiring ................................................................................ 27
Feedback ......................................................................................................... 28 Single-ended Incremental Encoder .............................................................. 28 Differential Incremental Encoder ................................................................. 28 Hall Sensors ............................................................................................. 29
I/Os ................................................................................................................ 29 Digital Inputs ........................................................................................... 29 Digital Output........................................................................................... 30 Analog Input ............................................................................................ 30 External Enable ........................................................................................ 31
Real Time Ethernet ........................................................................................... 32 USB ................................................................................................................ 32
5 Shielding __________________________________________________ 33
6 System Indicators ___________________________________________ 34
Appendix A: Cable Preparation ____________________________________ 37
LVD Sercos III
6 Quick Start Guide
LVD Sercos III Introduction
Quick Start Guide 7
1 Introduction
LVD Sercos III Overview
The LVD Sercos III is an advanced, fully digital, high-power and intelligent servo drive. The drive operates small brushless, stepper or brushed DC motors at 15-48 VDC bus, in current, velocity or position operation modes over a Sercos III, realtime Ethernet network.
A PWM switching frequency of 16 kHz or 100 kHz, combined with the field-oriented control and space-vector modulation, enables the operation of low inductance motors while maintaining low current ripple, with reduced acoustic noise.
The drive provides 7 ARMS continuous current and 12 ARMS peak current. Separate logic and bus power supplies allow safe motor power-off while maintaining drive state and fast restart.
System Architecture
The LVD Sercos III comprises a power stage, a digital control processor, a network processor and interface circuits. Figure 2-1 illustrates the system architecture.
Figure 2-1. System Architecture Block Diagram
CURRENT SENSE
PWM
BUS
LOGIC
SERCOS IIIDSP
FEEDBACK INTERFACE
POWER STAGE
I/OINTERFACE
PSU
NETWORK PROCESSOR
DC/BLDC/
STEPPERMOTOR
POSITION SENSE
Introduction LVD Sercos III
8 Quick Start Guide
The power stage of the LVD Sercos III consists of 8 power MOSFETs transistors in 4 half bridge configuration. This configuration provides the flexibility to connect and control three-phase brushless DC motors, two-phase bipolar stepper motors, or DC brushed motors.
The control logic is based on a dedicated digital signal processor (DSP). This high performance microprocessor executes control loops and controls the current, voltage waveform, speed and position on the motor.
The firmware running on the DSP uses motor shaft position feedback and motor current in order to control new voltage command to the motor every 62.5 microseconds. The DSP controls the power transistors using internal PWM generator, with carrier frequency of 16 kHz or 100 kHz.
The drive supports dual encoder feedback interface. However, one is reserved for future use.
The LVD Sercos III is a networked drive and uses a network processor for realtime Ethernet communication. The network processor is responsible for executing some communication related tasks and delivers to the DSP formatted and preprocessed messages. Thus removing the network load form the DSP and releasing it to perform its control tasks.
The LVD Sercos III supports Sercos III communication as well as RS232 over USB for configuration purposes. Additional realtime Ethernet bus support will be available as firmware upgrades.
The I/O unit consists of four opto-isolated digital inputs, one opto-isolated digital output, one opto-isolated remote enable, and two analog inputs. The digital inputs can be used for homing or general purpose. The analog input can be used for analog commands or linear feedback types.
LVD Sercos III Specifications
Quick Start Guide 9
2 Specifications
Mechanical Specifications
Figure 3-1 shows the dimensions of the LVD Sercos III.
Table 3-1. Mechanical Specifications
Item Specification
Weight 245 g, not including mating connectors
Dimensions (L x W x H) 117 x 78 x 21 mm (L x W x H) 4.6 x 3.1 x 0.8 inches
Mounting Brackets for vertical or horizontal mounting
Figure 3-1. Dimensions and Mounting Holes
Power Specifications
Table 3-2. Power Specifications
Type Units Value
Bus supply voltage range (*1) VDC 15 - 48
Logic supply voltage range (*1) VDC 11 - 32
Maximum continuous power output (*2) W 350
Specifications LVD Sercos III
10 Quick Start Guide
Type Units Value
Maximum output voltage 96% of Vbus at 16 kHz PWM
Maximum continuous output current (*2) Arms 7
Maximum peak output current (*2)(*3) Arms 12
Maximum logic power consumption (*4) VA 3.8
Feedback supply output VDC 5 (150 mA)
Feedback supply short circuit protection threshold A 1.5
PWM frequency kHz 16 or 100
* Notes 1. Bus and Logic power supplies are separated inputs with common ground.
2. Value is determined according to 45°C ambient temperature, without any attachment to external heat-sink, 16kHz PWM
3. Peak current maximum duration: 2sec. 4. Including external feedback connection and full drive activity.
Feedback Specifications
Incremental Encoder
Table 3-3. Incremental Encoder Specifications
Item Details
Encoder format (*1) A, B and Index Differential / Single Ended
Signal loss detection Differential mode only, on ±A and ±B
Differential encoder interface RS-422
Input resistance 120Ω
Single-ended encoder interface TTL
Maximum incremental encoder frequency (*2) 13 Mega-counts per second (3.25 MHz on A/B)
Maximum encoder input voltage ±5.5V
* Notes 1. Feedback type (differential or single-ended) can be selected by the user.
2. Will be 64 Mega counts on next revision.
LVD Sercos III Specifications
Quick Start Guide 11
Figure 3-2. Differential Encoder Interface Scheme
Figure 3-3. Single Ended Encoder Interface Scheme
Halls
Table 3-4. Halls Specifications
Item Details
Halls input HALL1/2/3 Single ended input
Input standard Open collector / open drain / TTL
Maximum frequency 8 kHz (per input)
Input current 5 mA (sourcing an open collector / open drain interface)
Maximum input voltage 5V
Minimum high level input voltage - VIH 2.4V
Maximum low level input voltage - VIL 0.9V
+
-
120
EN
RS-422Line Rec.
In+
In-
EN
LineBufferIn+
Specifications LVD Sercos III
12 Quick Start Guide
Figure 3-4. Halls Interface Scheme
I/O Specifications
Digital Inputs / External Enable
Table 3-5. Digital Inputs / External Enable Specifications
Item Details
Type Optically isolated
Maximum high level input voltage 26V
Minimum high level input voltage - VIH 4.5V
Maximum low level input voltage - VIL 2V
Maximum input current 10mA at maximum input voltage
Input resistance 2.2 kΩ
Maximum input frequency 3.8 kHz (50% duty-cycle pulse)
Isolation voltage 2500 Vrms
Figure 3-5. Digital Input Interface Scheme
560Hall_x
1K
5V
0.1µ
3.3V
2.2KDI_X
DI_X RET
LVD Sercos III Specifications
Quick Start Guide 13
Digital Output
Table 3-6. Digital Output Specifications
Item Details
Type Open collector, optically isolated
Maximum output voltage (VDDMAX) 30V
Maximum output current (ILMAX) 110 mA
Minimum load resistance 243Ω, calculation:
𝑉𝐷𝐷𝑚𝑎𝑥−𝑉𝑂𝑚𝑎𝑥𝐼𝐿𝑚𝑎𝑥
Output voltage (VO) 1.2 + 20 × IL
Figure 3-6. Digital Output Interface Scheme
Analog Inputs
Table 3-7. Analog Inputs Specifications
Item Details
Input differential voltage ±10V
Input resistance 94 kΩ
Maximum input frequency 8 kHz
Analog input resolution 12-bit
20DO
DO RET47K
Specifications LVD Sercos III
14 Quick Start Guide
Figure 3-7. Analog Input Interface Scheme
Environmental Specifications
Table 3-8. Environmental Specifications
Item Specification
Operating temperature -10 to 45°C (14° to 113°F)
Storage temperature -40 to 85°C (-40° to 185°F)
Humidity 5 to 95%, non-condensing
+
-
vref
AN_IN-
AN_IN+
LVD Sercos III Installation
Quick Start Guide 15
3 Installation
Mechanical Installation
Mounting the Drive The unit can be positioned vertically or horizontally. It can be mounted using the bracket on the rear, which has two mounting holes. Alternately, it can be mounted using the two side brackets, each of which has two mounting holes.
It is recommended to attach the drive to a metal surface, to improve heat dissipation.
To mount the unit, use M4 screws and an appropriate fastening tool. Four screws are needed for the side brackets. Two screws are needed for the rear bracket.
Mounting Multiple Drive Units When mounting multiple LVD Sercos III units within a cabinet or enclosure, it is recommended that the units be spaced at least 20 mm apart to allow airflow for heat dissipation.
Drive Address DIP Switch – SW2
The drive’s Sercos ID, or node address, is set by means of six DIP switches. The address can be a value in the range of 1–63. Each device on the network must have a different address. When setting the switches, refer to the labels on the drive.
The value that is set in the DIP switch is assigned to the last octet of the drive’s IP address.
To set the switches on the unit, use a small precision screwdriver.
Figure 5-1. Drive Address Switches
A0A6
0
1
Installation LVD Sercos III
16 Quick Start Guide
Table 5-1.Drive Address Switches
Label Description Binary Code = Valence
A0 Address 0 20 = 1
A1 Address 1 21 = 2
A2 Address 2 22 = 4
A3 Address 3 23 = 8
A4 Address 4 24 = 16
A5 Address 5 25 = 32
Connectors and Pin Assignments
Realtime Ethernet
Table 4-2. Real Time Ethernet Interface
Pin Item Specification
1A TX+A Ethernet channel A Transmit positive
2A TX-A Ethernet channel A Transmit negative
3A RX+A Ethernet channel A Receive positive
4A NC Not connected
5A NC Not connected
6A RX-A Ethernet channel A Receive negative
7A NC Not connected
8A NC Not connected
1B TX+B Ethernet channel B Transmit positive
2B TX-B Ethernet channel B Transmit negative
3B RX+B Ethernet channel B Receive positive
4B NC Not connected
5B NC Not connected
6B RX-B Ethernet channel B Receive negative
7B NC Not connected
8B NC Not connected
LVD Sercos III Installation
Quick Start Guide 17
Table 4-3. Real Time Ethernet Connector
Item Specification
Realtime Ethernet Connector
Dual RJ45 modular jack with internal magnetics and green/yellow LEDs
Table 4-4. Real Time Ethernet Mating Connector
Item Specification
Type RJ45 plug shielded, non-crossed
Table 4-5. Real Time Ethernet LEDs
LED Indication Description
Green A LinkA Not applicable
Yellow A TX/RXA Ethernet channel A transmit/receive indication
Green B LinkB Not applicable
Yellow B TX/RXB Ethernet channel B transmit/receive indication
Figure 4-2. Real Time Ethernet Connector
Installation LVD Sercos III
18 Quick Start Guide
Incremental Encoder and Halls - J18
Table 4-6. Incremental Encoder and Halls Interface
Pin Item Description
1 INC_ENC_SUPPLY Secondary encoder supply
2 INC_ENC_RET Ground
3 INC_ENC_A+ Secondary encoder A+
4 INC_ENC_A- Secondary encoder A-
5 INC_ENC_B+ Secondary encoder B+
6 INC_ENC_B- Secondary encoder B-
7 INC_ENC_I+ Secondary encoder I+
8 INC_ENC_I- Secondary encoder I-
9 INC_ENC_STROBE+ Secondary encoder strobe+
10 INC_ENC_STROBE- Secondary encoder strobe-
11 Reserved*
12 Reserved*
13 HALL1 Halls feedback 1
14 HALL2 Halls feedback 2
15 HALL3 Halls feedback 3
16 HALLS_RET Ground
17 HALLS_SUPPLY Hall sensors supply
18 Shield Encoder shield
Table 4-7. Incremental Encoder and Halls Connector
Item Specification
Manufacturer Molex
Part number 55959-1830
Table 4-8. Incremental Encoder and Halls Mating Connector
Item Specification
Manufacturer Molex
Part number 51353-1800
Crimp terminal part number 56134-9000
Conductor thickness 22-28 AWG
LVD Sercos III Installation
Quick Start Guide 19
Figure 4-3. Incremental Encoder and Halls Connector
Absolute Encoder / Secondary Incremental Connector - J16
Table 4-9. Absolute Encoder / Secondary Incremental Interface
Pin Item Description
1 ABS_ENC_SUPPLY Encoder supply
2 ABS_ENC_RET Ground
3 A+ Secondary incremental encoder A+
4 A- Secondary incremental encoder A-
5 B+ Secondary incremental encoder B+
6 B- Secondary incremental encoder B-
7 I+ Secondary incremental encoder I+
8 I- Secondary incremental encoder I-
9 Reserved*
10 Reserved*
11 Reserved*
12 Reserved*
13 Reserved*
14 NC Not connected
15 Reserved*
16 Shield Chassis connection
Table 4-10. Absolute Encoder / Secondary Incremental Connector
Item Specification
Manufacturer Molex
Part number 55959-1630
Pin#2 Pin#18
Pin#1 Pin#17
Installation LVD Sercos III
20 Quick Start Guide
Table 4-11. Absolute Encoder / Secondary Incremental Mating Connector
Item Specification
Manufacturer Molex
Part number 51353-1600
Crimp terminal part number 56134-9000
Conductor thickness 22-28 AWG
Figure 4-4. Absolute Encoder / Secondary Incremental Connector
I/O - J14
Table 4-12. I/O Interface
Pin Item Description
1 AN_IN+_0 Analog input + 0
2 AN_IN-_0 Analog input – 0
3 AN_IN+_1 Analog input + 1
4 AN_IN-_1 Analog input - 1
5 DI_0 Digital input 0
6 DI_1 Digital input 1
7 DI_0_1_RET Digital inputs 0,1 external ground
8 DI_2_3_RET Digital inputs 2,3 external ground
9 DI_2 Digital input 2
10 DI_3 Digital input 3
11 DO Digital output
12 DO_RET Digital output external ground
13 EXT_EN+ External enable +
14 EXT_EN- External enable -
Pin#2 Pin#16
Pin#1 Pin#15
LVD Sercos III Installation
Quick Start Guide 21
Table 4-13. I/O Connector
Item Specification
Manufacturer Molex
Part number 55959-1430
Table 4-14. I/O Mating Connector
Item Specification
Manufacturer Molex
Part number 51353-1400
Crimp terminal part number 56134-9000
Conductor thickness 22-28 AWG
Figure 4-5. I/O Connector
Power and Motor - P7
Table 4-15. Bus Power and Motor Interface
Pin Item Description
1 Bus+ Bus voltage supply +
2 Bus- Bus voltage supply -
3 MPhaseD Motor phase D
4 MPhaseC Motor phase C
5 MPhaseB Motor phase B
6 MPhaseA Motor phase A
7 Shield Motor shield
Table 4-16. Bus Power and Motor Connector
Item Specification
Manufacturer Phoenix Contact
Part Number MSTBA_2,5/ 7-G (1755493)
Pin#2 Pin#14
Pin#1 Pin#13
Installation LVD Sercos III
22 Quick Start Guide
Table 4-17. Bus Power and Motor Mating Connector
Item Specification
Manufacturer Phoenix Contact
Part number MSTB 2,5/ 7-ST (1754546)
Conductor Thickness 12 – 24 AWG
Figure 4-6. Bus Power and Motor Connector
Logic Power - P2
Table 4-18. Logic Power Interface
Pin Item Specification
1 Logic+ Logic voltage supply +
2 GND Ground
Table 4-19. Logic Power Connector
Item Specification
Manufacturer Molex
Part number 35363-0260
Table 4-20. Logic Power Mating Connector
Item Specification
Manufacturer Molex
Part number 35507-0200
Crimp terminal part number 50212-8100
Conductor thickness 24-30 AWG
Pin#1
LVD Sercos III Installation
Quick Start Guide 23
Figure 4-7. Logic Power Connector
USB
Table 4-21. USB Interface
Pin Item Specification
1 VCC USB power supply input
2 USBDN USB data -
3 USBDP USB data-
4 NC USB ID - not connected
5 GND USB ground
Table 4-22. USB Connector
Item Specification
Connector type USB Mini-B receptacle
Mating connector type USB Mini-B plug
Figure 4-8. USB Connector
Pin#1
Wiring LVD Sercos III
24 Quick Start Guide
4 Wiring
Wiring Guidelines
Be sure to use conductor thickness as specified in the section Pinouts and Location of the Connectors.
When using shielded cables for motor, feedback and communication, follow shielding instructions in the section Shielding.
Use the shortest cable possible.
Follow the wiring guidelines defined by the connectors’ manufacturers.
For reducing EMI effects, use twisted pairs for the following cables:
Power supply
Motor phases
Feedback
Communication
System Electrical Drawings
Figure 6-1 is an example of system connection with brushless DC motor, Halls and a differential encoder.
LVD Sercos III Wiring
Quick Start Guide 25
Figure 6-1. System Wiring Diagram
Detailed wiring diagrams of other motor types are in the section Motor.
Detailed wiring diagrams of other feedback types are in the section Feedback.
LVD Sercos III
Wiring LVD Sercos III
26 Quick Start Guide
Power Supply
Figure 6-2. Power Supply Wiring Diagram
The LVD Sercos III has two separate power supply inputs.
The power supply ground line is connected to drive’s shield. System shielding must be implemented.
Use twisted pair cables for reducing EMI.
When bus voltage is higher than 32 VDC, use isolated power supply source for UL compliance.
Caution: No reverse polarity protection on bus supply input. Incorrect wiring may cause severe damage to the drive.
Motor
DC Motor Wiring
Figure 6-3. DC Motor Wiring Diagram
When driving a DC motor, phases A and B (P7.6 and P7.5) must be connected. Use a twisted pair for these phase lines.
Connect the cable shield to the drive chassis (P7.7). If the motor has a protective earth (PE) terminal, it must also be shielded.
LVD Sercos III Wiring
Quick Start Guide 27
Brushless DC (BLDC) Motor Wiring
Figure 6-4. BLDC Motor Wiring Diagram
When driving a brushless DC motor, phases A, B and C (P7.6, P7.5 and P7.4) should be connected. Use twisted wires for these 3 phase lines.
Connect the cable shield to the drive chassis (P7.7). If the motor has a protective earth (PE) terminal, it must also be shielded.
Stepper Motor Wiring
Figure 6-5. Stepper Motor Wiring Diagram
When driving a bipolar stepper motor, phases A and B (P7.6 and P7.5) must be connected to motor’s first phase. Phases C and D (P7.4 and P7.3) must be connected to the second phase.
Use a twisted pair for each motor phase (AB and CD).
Connect the cable shield to the drive chassis (P7.7). If the motor has a protective earth (PE) terminal, it must also be shielded.
Wiring LVD Sercos III
28 Quick Start Guide
Feedback
Single-ended Incremental Encoder
Figure 6-6. Single Ended Incremental Encoder Wiring Diagram
When using a single ended incremental encoder, connect the signals to the positive terminals A+, B+ and I+ (J18.3, J18.5 and J18.7). The encoder is supplied from the encoder supply pins.
Use a shielded cable and connect to the shield terminal (J18.18).
Use of a single-ended encoder is not recommended if the application requires a long cable application or if the environment is noisy.
* Notes 1. When using a single-ended encoder, there is no connection loss detection.
2. If an index line is missing, leave I+ terminal disconnected.
Differential Incremental Encoder
Figure 6-7. Differential Encoder Wiring Diagram
LVD Sercos III Wiring
Quick Start Guide 29
When using a differential encoder, use a twisted pair for each differential signal (A±, B± and I±) and power supply.
Use a shielded cable, and connect it to the shield terminal (J18.18).
Notes:
* Notes 1. When using a differential encoder, a connection loss in A± and B± lines will produce a drive fault.
2. If an index line is missing, leave I+ terminal disconnected.
Hall Sensors
Figure 6-8. HALLs Wiring Diagram
If the Hall sensors have dedicated supply terminals at J18.17 and J18.16, twist all 3 signal lines to reduce EMI.
Use shielded cable and terminate in J18.18.
I/Os
Digital Inputs
Figure 6-9. Digital Inputs Wiring Diagram
LVD Sercos III has 4 digital inputs. Inputs 0 and 1 have common return pin at J14.7. Inputs 2 and 3 have common return pin at J14.8.
Refer to the I/O specifications for proper use of this interface.
Wiring LVD Sercos III
30 Quick Start Guide
Digital Output
Figure 6-10. Digital Output PD Wiring Diagram
Figure 6-11. Digital Output PU Wiring diagram
The digital output can be connected in either of the following ways:
Pull-down: connect the VCC directly to J14.11, and connect the controller’s pulled down input to J14.12.
Pull-up: connect the ground directly to J14.12, and connect the controller’s pulled up input to J14.11.
Refer to the digital output specifications for proper use of this interface.
Analog Input
Figure 6-12. Analog Input Differential Wiring Diagram
LVD Sercos III Wiring
Quick Start Guide 31
Figure 6-13. Analog Input Single Ended Wiring Diagram
The analog input can interface with both single-ended and differential analog interfaces.
Single-ended: AN_IN- is connected to the controller’s ground and AN_IN+ is connected to the controller’s S.E. output in range of ±10V.
Differential: AN_IN+ is connected to the controller’s positive output and AN_IN- is connected to the negative output.
Use a shielded cable and a twisted pair for each analog signal.
External Enable
Figure 6-14. External Enable Wiring Diagram
External Enable must be connected to enable motion.
The external enable connection is similar to that of the digital inputs.
An output low signal or a disconnection will disable the drive and prevent motion.
Wiring LVD Sercos III
32 Quick Start Guide
Real Time Ethernet
Figure 6-15. Real Time Ethernet Wiring Diagram
The realtime Ethernet connection is done by standardized Ethernet connection via RJ45 connectors.
The two Ethernet ports enable chaining multiple devices in the Sercos III network to simple (last device’s second port is left unconnected) or redundant (ring structure) network.
If using a network edge device, one port can be left unconnected.
Use a shielded cable with a metal plug for termination.
USB
Figure 6-16. USB Wiring Diagram
LVD Sercos III is a USB device and not a host controller.
The data lines are a twisted pair.
The cable shield is terminated via the standard mini-B connector and must be grounded at the host point.
LVD Sercos III Shielding
Quick Start Guide 33
5 Shielding
LVD Sercos III has a common ground between the bus and logic units. This common ground is shielded in order to overcome motion system noise. When installing the drive, in any system, be sure to take into consideration the power supply shielded ground.
Figure 7-1. Grounding Structure
The following cables must also be shielded:
Motor
Feedback
Realtime Ethernet
USB
Analog input
The motor cable shield must be connected to the Chassis pin (P7.7). It your motor has a built-in shield connection, the shield wire and cable shield must be attached to the Chassis pin.
The feedback cables must be shielded and connected to Incremental Encoder and Halls pin #18 (J18.18), or Absolute Encoder pin #16 (J16.16) if the secondary incremental encoder is used.
When using a shielded cable, it is recommended to use a non-insulated drain wire in contact with cable’s shield. This facilitates termination of the shield at the connection points.
Logic- BUS- Chassis(PE)
Drive Status LVD Sercos III
34 Quick Start Guide
6 Drive Status
System Indicators
LEDs are located on the LVD Sercos III front and side panels, as shown in Figure 5-1.
Figure 5-1. LED Indicators
Table 5-1 lists the functions of the status LED indicators.
Table 5-1. LED Indicators
Name Color Function
Bus Power Yellow On: Bus power is connected and powered to at least 10 VDC.
S1 (Drive status)
Green Blinking: The drive is operational and ready to be enabled.
On: The drive is enabled Off: Drive disabled with fault(s).
S2 (Fault)
Red Blinking: A fault that was detected can now be cleared.
On: A persistent fault cannot be cleared and needs attention.
Off: No faults
LVD Sercos III Drive Status
Quick Start Guide 35
Error Codes
Error Code Error Message Description Action Required
0x00000000 No Faults No faults -
0xC00F2018 Over Temperature The temperature of the drive is higher than 90°C (194°F) or lower than 30°C ( 22°F), or the temperature sensor has a malfunction.
Check the drive operation conditions, using IDN S-0-0384 (Amplifier temperature) to read the measured temperature. Or, reduce the load on the drive, increase heat-sink size or improve ventilation.
0xC00F2174 Encoder Line Break
A disconnection of one of the encoder inputs was detected.
Check the encoder cable wiring. If single ended encoder is used, set the value of IDN P-0-0629 (Differential or Single Ended Encoder) to 0.
0xC00F8028 Over Current The motor current exceeded 120% of the value of amplifier peak currentץ
Check the value of IDN S-0-0110 (Amplifier peak current). Check and adjust the controller's acceleration and deceleration values. The current can be limited by the use of IDN S-0-0092 (Bipolar torque limit value)
0xC00F2025 Over Voltage Bus voltage exceeded the limit for the bus voltage IDN P-0-0113 (Over Voltage Fault Level)
Check the value of IDN P-0-0113 (Over Voltage Fault Level). Consider usage of Regen functionality and resistor.
0xC00F2026 Under Voltage Bus voltage is lower than the value that is set at the under-voltage fault level IDN P-0-0114 (Under Voltage Fault Level)
Check if BUS power is connected. Check the value of IDN P-0-0114 (Under Voltage Fault Level).
0xC00F2036 Position Error Position error value is larger than the value of IDN S-0-0057 (Position Window)
Check the value of IDN S-0-0057 (Position Window). Or, check the parameters tuning.
0xC00F8079 Over Speed Actual speed exceeded the velocity over speed value at IDN P-0-0631 (Velocity Over Speed)
Check the value of IDN P-0-0631 (Velocity Over Speed). Or, reduce the controller's demanded velocity.
0x000F0100 Acc Dec Violation The motor acceleration or deceleration is greater than the value of the maximum acceleration IDN S-0-0138 (Bipolar acceleration limit value).
Check control loops parameters. Check the demanded acceleration and deceleration. Or, increase the value of the maximum acceleration, or set it to 0 to disable this functionality.
0x000F0200 Velocity Error The difference between the velocity command and the actual velocity is greater than the value that is set in IDN S-0-0157 (Velocity window)
Check current loop and velocity loop parameters. Or, check the controller's velocity demand, acceleration and deceleration.
0x000F0300 EEPROM Checksum Fault
Checksum error while loading parameters.
Configure all the drive parameters and save them to the EEPROM using IDN S-0-0264 (Backup working memory procedure command). Or, the EEPROM might be damaged and the drive requires service.
0x000F0400 EEPROM Reading Fault
The drive’s firmware could not access the EEPROM.
Reset the drive, and try again. Or, the EEPROM might be damaged and the drive requires service.
0x000F0500 EEPROM Writing Fault
The drive’s firmware could not access the EEPROM.
Reset the drive, and try again. Or, the EEPROM might be damaged and the drive requires service.
0x000F0600 PLL is Unlocked While Drive is Enabled
At SERCOS phase 4, during Enable - packets are missed
-
0x000F0700 Illegal Halls Illegal state for reading the Hall sensors.
Check Hall cable wiring. Also, check that Hall sensors are functioning.
Drive Status LVD Sercos III
36 Quick Start Guide
Error Code Error Message Description Action Required
0x000F0800 Position Command Error
The derivative of the position command is larger than the value of IDN P-0-0631 (Velocity Over Speed). Or, the second derivative of the position command is higher than the value of IDN S-0-0138 (Bipolar acceleration limit value).
Check the controller's position command to the drive. Or, set higher values to IDN P-0-0631 (Velocity Over Speed) and IDN S-0-0138 (Bipolar acceleration limit value). Or, disable this protection by setting value of 0 to the following IDN's: IDN P-0-0625 (Maximum Position Derivative) and IDN S-0-0138 (Bipolar acceleration limit value).
0x000F0900 Bus Voltage is higher than Regen threshold
When the drive is disabled - the bus voltage is higher than the voltage that would enable the regen activation
Check the value of IDN P-0-0113 (Over Voltage Fault Level). Disable Regen operation if not needed, IDN P-0-0638 (Regen enable).
0x000F0A00 Commutation Fault
A mismatch between the position of the Hall sensors and the encoder. Or, if the value of IDN P-0-0628 (Feedback Type) is 2 or 3, find commutation procedure command (P-0-0636) failed or it was not executed
Check the value of IDN S-0-0116 (Resolution of feedback 1), value of IDN P-0-0630 (Encoder Direction) and the Halls cable. Call the CONFIG procedure command, IDN P-0-0632. Or, (in case IDN P-0-0628 value is 2 or 3), execute find commutation procedure command (P-0-0636).
0x000F0B00 I2T Limit Energy usage value at IDN P-0-0503 (I2T Value) is higher than the I2T the value of IDN P-0-0504 (I2T Limit).
Set higher value to IDN P-0-0504 (I2T Limit). Reduce motor load. Or, if I2T protection is not needed, disable it by setting value of 0 to IDN P-0-0504 (I2T Limit).
LVD Sercos III Appendix A: Cable Preparation
Quick Start Guide 37
Appendix A: Cable Preparation
If ready-made cable assemblies are not being used, a crimping tool, such as the Molex hand crimper 63819-190500 or the Molex 63811-6300, must be used for Molex headers (P2, J14, J16 and J18).
The Logic Power (P2) header is from the Sherlock© series, and requires Molex hand crimp tool number 63819-0500.
Figure 8-1. Molex Hand Crimp Tool 63819-0500
J14, J16 and J18 connectors are from the MicroClasp© series, and require Molex hand crimp tool number 63811-6300.
Figure 8-2. Molex Hand Crimp Tool 63811-6300
Follow the hand crimp tools’ operating instructions carefully. Select conductor with the right thickness and then strip it in a proper length. For detailed instructions, refer to tool’s specification.
Table 8-1. Cable Preparation
Header Hand Crimp Tool
Conductor Thickness [AWG]
Strip Length [mm]
Tooling Specification Link
P2 63819-0500 24 – 30 1.3 – 1.8 http://www.molex.com/pdm_docs/ats/ATS-638190500.pdf
J14, J16, J18 63811-6300 22 - 28 1.6 – 2.0 http://www.molex.com/pdm_docs/ats/ATS-6381163HM.pdf
Appendix A: Cable Preparation LVD Sercos III
38 Quick Start Guide
Be sure to following the crimping instructions to avoid loose wires. An example of proper crimping is shown in Figure 8-3.
Figure 8-3. Proper Crimping
LVD Sercos III Servo Drive Quick Start Guide Rev. 1.0
Servotronix - 21C Yagia Kapayim St. POB 3919 Petach Tikva 49130, Israel Tel: 972-3-927-3800 [email protected] www.servotronix.com