RS-485 Hookup Diagram 2 wire Half Duplex | GE EPM 5300 guide

RS-485

CHAPTER 4: COMMUNICATION INSTALLATION

4.2RS-485

Each EPM 5300P or 5200P instrument has a unique address up to four digits long. This allows the user to communicate with up to 10,000 instruments. Available standard baud rates are 1200, 2400, 4800, and 9600. To select the proper baud rate, apply the following rules:

The unit operates up to 9600 baud. For a smaller number of instruments over a long distance, use a lower baud rate. Optimal recommended baud rate is 1200 baud, if noisy conditions exist.

RS-485 Hookup Diagram (2 wire) Half Duplex

5300P Instruments (rear view)

RS-485

Communications Port

Model#SF485DB

RT

RT

RS-485

UNICOM 2500

(Bottom View Shown)

RS-232

PC

(+) (-)

FIGURE 4–2: 2-Wire RS-485 Communication Connection Installation half duplex

4–22	EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL

Image 34

GE EPM 5300, EPM 5200, EPM 5350 instruction manual RS-485 Hookup Diagram 2 wire Half Duplex

Contents

EPM 5300 Power Metering System Chapter GE MultilinPage Table of Contents Programming 113 111112 114 Table of Contents TOC-IV EPM 5300 Series Meters AC Power Measurement Single Phase System Power W in a single phase system is = E I cosΘ Three-Phase System Delta Wye Poly Phase System 1 Delta, 2 Wye Consumption, Demand and Poor Power Factor Consumption WH = W ⋅ T Waveform and Harmonics Sin ω ⋅ t EPM 5300 Series Meters Mechanical Installation Mechanical Installation Installation with K-110 option for limited space conditions Port Mechanical Installation Connecting the Current Circuit EPM 5300 Series Meters Electrical InstallationFeet CT Connection Option 1 Isolating a CT Connection Reversal power readingHelpful Debugging Tools Connecting the Voltage Circuit Selecting the Voltage Fuses Connection to the Main Power Supply Externally fuse power supply with a slow-blow 3 Amp fuse Electrical Connection Installation List of Connection Diagrams Line Load Back View Line Back View B C Load Line B C Back View Load Single Phase with CT and PT Connection EPM 5300P-S Line 2 2 Relays & 1 KYZ Pulse Output -NL Option Relay, Protection and Pulse OutputEPM 5300P Relay Overview This section applies only to the -NL or -NL2 Relay Option Close-up of the Relay and KYZ pulse output on the rear panel Standard Rate Table for Watts KYZ Pulse Outputs NL2 Option Standard Rate Table for Watts KYZ Pulse Outputs NL2 Option EPM 5300 Series Meters Communication Installation RS-232C RS-485 Hookup Diagram 2 wire Half Duplex RS-485 RS-485 Hookup Diagram 2 wire Half Duplex Closed Loop RS-485 Hookup Diagram 4 wire Full Duplex Connecting 4-Wire bus to RS-485 Port RS-485 Hookup Diagram 4 wire Full Duplex Detail View Network of Instruments and Long Distance Communication You may want to use a Modem Manager RS485-RS232 Converter Programming the Modem Modem Connected to Computer Originate ModemModem Connected to the Device Remote Modem Tell modem to write the new settings to activate profile Debugging Communication Problems ± Total KWH EPM 5300 Series Meters OverviewFreq Total Kvah N/A on EPM 5200P EPM 5300P front panel with display and keypad Press Power to select the power category Accessing the Power FunctionsSequence Accessing Voltage and Current Phases Press PHASE/NEXT for the desired phase Accessing %THD Functions Display blanks and indicates the %THD value momentarily Viewing Individual Phase Indication for Power Functions Accessing Max/Min Values Phase To reset the min of Amps a Resetting ValuesUnprotected Reset Repeat this procedure for each value you wish to reset Protected Reset Password is Time a password digit Appears Resetting Hour ReadingsPress Power once While the question To access the set limit Accessing the LM1/LM2 Set LimitsTo view the setup of the LM1/LM2 set limits To locate readings that exceeded Limit This display indicates a Voltage Phase Reversal and ImbalanceVoltage Phase Reversal Press and hold down Print Operating Data Access ModesEnter Programming Mode see Programming Section Print Programming Data Print Operating Data Press and hold PHASE/NEXTMiddle display Release both buttons Print Programming Data Accessing Firmware Version/LED Test Step Press and hold PHASE/NEXT General Procedure EPM 5300 Series Meters Programming Overview Switch Packs GROUPS, Functions, and Switch Packs Position UP or Down Programming Mode Data EntryPoint from Function and Group level Activates new data entry and enters or exits from Standard Numeric Data Entry EPM 5300 Series Meters EPM 5200P EPM 5200P EPM 5300P vs EPM 5200P vs EPM 5350P VA/HR EPM 5300 Series Meters Entering Programming Mode Checksum Error-Protective Self-Checking Algorithms If 3 is not already displayed Press Amps until 3 appears Password EntryEntering Programming Mode Flashes momentarily in middle display Relay 2 Set-up / Time delay System Configuration see TableRelay 1 Set-up / Time delay Number of Phases Group 0, Function 0-The Integration Interval Enter Group Level of Programming Mode see ChpLower display indicates current Interval setting Press Amps to activate the Group Programming Group 0 Global Meter Setup To change the Meter Address Group 0, Function 2 Baud Rate Group 0, Function 3 System Configuration Group Function Pack Open Delta System Installation Programming Programming Group 0 Global Meter Setup Modbus Plus Capability Printing Option Group 0, Function 3-Programming Procedure To change the System Configuration Switch Settings Relay Mode Programming Steps Enter in Group 0, Function 4, Pack ‘p’, Segments C and D LI M IT S Relay 1 Off to On Delay Time To change Time DelaysRelay 1 On to Off Delay Time Relay 2 On to Off Delay Time To program Relay 2 To perform the KYZ Parameter Selection Group 0, Function 6-KYZ Parameter SelectionKYZ Parameters Enter Group Level of Programming Mode see Chp Applies to -NL2 Option only How to Use KYZ Pulse Value Table for MultiplicationKYZ Pulse Value How to Use KYZ Pulse Value Table for Division Selection is Multiply by To change the KYZ pulse value Enter Group Level of Programming Mode. Chapter Group 0, Function 7-Number of PhasesEnter 2 for single phase/two wire Press Amps to activate the Group Appears in upper display Formulas Voltage Full Scale Typical Full Scale Settings for VoltsGroup 1, Function Group 1 Programming Format Press Amps to activate Group Appears in upper display Press MAX/MIN/LIMITS until 1. appears in upper displayPress Volts to move decimal point Press Amps to store 10-76 To change the Full Scale Settings Full Scale Settings for Amps Entering the Scale Factor Decimal Point Selection Step Press Amps to begin Data Entry Sequence Scale Selection and Decimal Placement for Watts To change the scale factor setting for wattage Display Entering the Scale Factor Step 10-82 EPM 5300 Series Meters Programming Group 2 Meter Calibration High End Calibration-Volts AN, BN, CN Calibration RequirementsGroup 2 Programming Format High End Calibration-Amps A, B, C Group 2, Functions To change the calibration high end-Functions 0 For Amps Low End Function Group 2, Functions 11-87 11-88 EPM 5300 Series Meters Groups 4, 5 Set Limits Relays LM1 and LM2 SET Limits Trip Relay Time Delays & Relay Mode Group 4 Functions 0-3-LM1/LM2 Set Limits V O L T S A M P S Group 4 Functions Group 4 Programming Format for Limit ConditionGroup 4 Programming Format Group 4 Example for Function Group 5 Functions 0-7-LM1/LM2 Set Limits There are 3 switches to set with limitsGroup 5 Programming Format for Limit Condition Group 5 Example for Function Special CasesGroup 5 Functions Digit Up Digit Down 0120 Group 6 Programming Format For THD Limit Conditions Group 6 LM1/LM2 Set LimitsGroup 6 Functions Group 6-Example for Function Digit Up Digit Down 012.0 Limits or Relays Programming Procedure Group Press Amps once to Disable the Limit Limits or Relays Programming Procedure 12-100 Phase Reversal and Phase Imbalance Phase Imbalance Trip Relay Level ENABLE/DISABLE Voltage Phase Reversal Detection Group 7, Function 0-Voltage Phase Reversal DetectionTo change the phase reversal setting Voltage Phase Imbalance 13-104 Group 7, Function 1-Percentage Voltage Phase Imbalance To change the percentage voltage phase imbalance Middle and lower displays indicate new settings EPM 5300 Series Meters Exiting Programming Mode Exiting Programming Mode Meter returns to Function Level Press Amps to exit from Function Level to Group Level Entering the Programming Mode EPM 5300 Series Meters Programming Quick Reference Data Entry Sequence Group 0 Global Meter Setup Programming Groups Volts Full Scale Currents Full Scale Power Full Scale Group 1 Full Scale SetupOn to OFF delay time OFF to on delay time Group 2 Calibration Group 4 Volt/Current Limits Group 5 Power Function LimitsGroup 3 Calibration Ratios Group 6 THD Limits Group 8 DC output Calibration Group 7 Imbalance/Reversal LimitsDetect Reversal Imbalance percent Limit ⎯ Scroll Functions 89L. Low-End Calibration 89H. High-End Calibration⎯ Scroll Groups ⎯ Scroll Packs 15-116 EPM 5300 Series Meters Ethernet Option Ethernet Module Ethernet Option Setup AutoIP ARP on Unix Network Port LoginNetwork Configuration Telnet to Port Configuration Parameters Baud Rate