Modbus Communications | Emerson Epsilon Eb Digital Servo Drive

Installation

Modbus Communications

The drive’s serial communication protocol is Modbus RTU slave with a 32 bit data extension. The Modbus protocol is available on most operator interface panels and PLC’s.

Serial Communications Specifications

Max baud rate	19.2k

Start bit	1

Stop bit	2

Parity	none

Data	8

Control Techniques’ Motion Interface panels are supplied with a Modbus master communications driver.

Multi-Drop Communications

The RS-485 option (pins 4 and 9) is provided for multi-drop configurations of up to 32 drives. Control Techniques provides a special multi-drop serial cable which allows you to easily connect two or more drives.

Figure 31: Multi-Drop Wiring Diagram

31

Image 49

Emerson Epsilon Eb Digital Servo Drive, 400501-05 installation manual Modbus Communications, Multi-Drop Communications

Contents

Installation Manual Page Epsilon Eb Digital Servo Drive Installation Manual Control Techniques Drives, Inc FAX Customer Service Document Conventions Training Services 952 995-8000 or 800 This Represents Epsilon Only Reference Materials Safety InstructionsGeneral Warning Qualified Person Setup, Commissioning and Maintenance Safety PrecautionsSafety of Machinery Enclosure Viii Drive Overload Protection Underwriters Laboratories ListedRated output current Amps RMS Drive Model Continuous Peak CE Declaration of Conformity Supplementary information Xii Table of Contents Options and Accessories Diagnostics and TroubleshootingSpecifications Index Epsilon Eb Digital Servo Drive Installation Manual Xvi Drive Model Power Rating Continuous Current Peak Current FeaturesEpsilon Eb Digital Servo Drive Epsilon Eb Drives Feature Location Electromagnetic Compatibility EMC Basic Installation Notes Achieving Low Impedance Connections AC Line Filters AC Line Filter Installation NotesEpsilon Series Schaffner Control Techniques Rating Drive Rating Cable Type Cable to Enclosure ShieldingActual Hole Size AC Filter and Cable Connections for Epsilon Drives Environmental Considerations Wiring Notes Mechanical InstallationDrive Mounting Motor Mounting Typical System Grounding Diagram Electrical Installation AC Supplies not Requiring Transformers Power Supply Requirements Earth Grounded WYE Distribution Transformer AC Supplies Requiring Transformers Delta to Delta Isolation Transformer Drive/Motor Combination Suggested KVA Rating Transformer Sizing Inrush Current Amps Line Fusing and Wire SizeAmps RMS at St Cycle 2nd Cycle Epsilon AC Power Wiring Diagram Input Power Connections Epsilon Auxiliary Power Supply Wiring Diagram Alternate Power Supply Wiring Voltage Range Current Inrush Current APS Input Specification Multiple APS Wiring Diagram Motor Power Wiring Motor Brake Wiring Motor Feedback Wiring Epsilon Brake Wiring Diagram using the Command Connector Epsilon Input/Output Wiring Diagram Input/Output and Drive Enable Wiring Epsilon I/O to Command Connector Internal Connections Command Connector Wiring Function Pin Numbers Electrical Characteristics Command Connector J5 Pinout and CMDO-XXX Wire Colors Command Cables Analog Command, Differential Wiring Diagram Analog Command Wiring Command Connector Encoder Output Wiring Encoder Output Signal Wiring Pulse Mode, Differential Output to Differential Input Pulse Mode Wiring, Differential Inputs Pulse Mode Wiring, Single Ended Inputs Master/Slave Encoder Connections Serial Communications Modbus Communications Serial Communications SpecificationsMulti-Drop Communications Multi-Drop Wiring Pinout Display Indication Status Description Diagnostic Display Display Fault Action to Reset Bridge Disabled Fault Codes Diagnostics and Troubleshooting Fault Descriptions High DC Bus Threshold Low DC Bus Treshold Power Module Encoder State Output Source Offset Scale Diagnostic Analog Output Test Points Diagnostic Cable Dgne Diagram Drive Faults Viewing Active Drive Faults Resetting FaultsRebooting the Drive Watch Window Watch Window Group View Motor Parameters Options and Accessories Dimensions of ECI-44 ECI-44 External Connector Interface STI EIO STI-EIO Interface ECI-44 Signal Connections Drive Specifications Fault Detection Capability Encoder Output SignalShunt Resistor Capacity Regeneration Capacity Drive and Motor Combination Specifications Motor Weights Motor Brake Specifications Axial/Radial Loading IP RatingsMotor Max Radial Load lb Max. Axial Load lb Power Dissipation Encoder SpecificationsPower Dissipation Calculation Motor Density Output Type Output Signals Power Supply Motor Mounting Plate Size Speed Torque Curves Epsilon Speed Torque Curves, sheet 1 Epsilon Speed Torque Curves, sheet 2 Following table applies to A* and B* as shown in Figure Epsilon Drive Dimensions Eb 202, Eb-203, Eb-205 MGE-205 and 208 Mounting Dimensions inches mm MG Motor DimensionsMGE-205 and 208 Motors MGE-316, MGM-316, and MGM-340 Mounting Dimensions MGE-316, MGM-316, and MGM-340 Mounting Dimensions Inches mmMGE-316 and 340 Motors MGE-455, 490 and 4120 Motors MGE-455, 490 and 4120 Mounting Dimensions inches mm MGM-455, 490 and 4120 Motors MGE-455, 490 and 4120 Mounting Dimensions mm inches NTE-207 Motors English Face Nema 23 with 3/8 inch shaft NT Motor Dimensions NTM-207 Motors Metric Face NTE-212 Motors English Face Nema 23 with 3/8 inch shaft NTM-212 Motors Metric Face Drive Signal Cable Diagrams CMDX-XXX Cable CMDO-XXX Cable CDRO-XXX Cable AX-CEN-XXX Cable TIA-XXX Cable EIO-XXX Cable DDS-XXX Cable TERM-H Head Terminator CMDS-XXX Cable CMMS-XXX Cable TERM-T Tail Terminator CFCS-XXX Cable CFCO-XXX Cable CFOS-XXX Cable Vendor Contact Information Index STI-EIO Index Epsilon Eb Digital Servo Drive Installation Manual