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Manual No. 21-115-527-024 rev02 

 

 

 

 

 

 

MJ-4

TM

 Communications Module 

Fiber Optic and RS-232/485 

Installation Manual for MJ-4A

TM

, MJ-X

L TM

 and MJ-X

TM

 Control Panels 

 

Rxd

Txd

POWER

Watchdog

Communications

RS - 232 / 485

Communications Module

G
N
D

R

T

N

-

+

R

x
d

T

x

d

C

T
S

R

T
S

Data

IN

OUT

 

MJ-4 Communications Module 

 

 

 

 

 

 

 

 

 

 

 

 

 

Содержание MJ-4A

Страница 1: ...ons Module Fiber Optic and RS 232 485 Installation Manual for MJ 4ATM MJ XL TM and MJ XTM Control Panels Rxd Txd POWER Watchdog Communications RS 232 485 Communications Module G N D R T N R x d T x d C T S R T S Data IN OUT MJ 4 Communications Module ...

Страница 2: ...tag circuits and equipment in accordance with established safety practices b Is trained in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses or face shields flash clothing etc in accordance with established safety practices c Is trained in rendering first aid SUMMARY These instructions do not purport to cover all details or variations in equipment nor to...

Страница 3: ...OUT 11 6 2 PERFORMING THE LOOPBACK DIAGNOSTIC TEST 11 7 CABLING THE COMMUNICATIONS MODULE TO THE POWER SYSTEM 12 7 1 FIBER OPTIC CABLE TYPE 12 7 1 1 Fiber Optic Cable Lengths 12 7 1 2 Fiber Optic Connector 12 7 1 3 Fiber Optic Connections 13 7 2 RS 485 TWISTED PAIR CABLE 13 7 2 1 RS 485 Cable Type 13 7 2 2 RS 485 Cable Grounding 13 7 2 3 RS 485 Connector 14 7 2 4 RS 485 Cabling Considerations 14 7...

Страница 4: ...NSTALLED 7 FIGURE 5 1 MJ X CONTROL PANEL REAR COVER 8 FIGURE 5 2 COMMUNICATIONS MODULE INSTALLATION IN MJ X 9 FIGURE 5 3 MEMBRANE SWITCH CABLE ROUTING TOP DOWN VIEW 9 FIGURE 5 4 MJ X COMMUNICATIONS MODULE CABLE ROUTING 10 FIGURE 7 1 FIBER OPTIC CONNECTIONS 13 FIGURE 7 2 RS 485 CONNECTION 13 FIGURE 7 3 SCREW TERMINAL BLOCK CONNECTOR 14 FIGURE 7 4 RS 485 LOOP TOPOLOGY 14 FIGURE 7 5 COMMUNICATION CAB...

Страница 5: ... of the tap changer control panel to the supervisory equipment via electrical wire The MJ 4 Communications Module is installed in MJ 4 Tap Changer Control Panels This allows you to easily network the control panels and other field devices to a remote terminal unit RTU or other supervisory device An adapter kit is available for mounting MJ 4 Communications Modules in MJ X Control Panels Rxd Txd POW...

Страница 6: ...he MJ 4 supports two popular wire interfaces RS 232 and RS 485 The screw terminal block connector supplied with the module can be wired for either interface Connection to the supervisory device is typically accomplished using either a DB 9 or DB 25 connector for RS 232 while the connector used for RS 485 will vary with the application 2 2 1 RS 232 Direct RS 232 connections are limited to a maximum...

Страница 7: ...able s terminating impedance matches the characteristic impedance of the cable If the cable s characteristic impedance is 120 ohms use a 120 ohm terminating resistor Capacitance Wire capacitance affects the rise and fall times of a transmitted signal and as a result limits the signaling baud rate of the data The higher the capacitance the lower the maximum baud rate Additionally higher capacitance...

Страница 8: ...ing the Communications Module in MJ 4 Control Panels The MJ 4 Communications Module is mounted directly on the MJ 4 Main Processor Board Follow these steps to install the communications module Details are provided in the sections below 1 Turn off power to the MJ 4 2 If in a regulating device then disconnect the polarized disconnect switch PDS 3 Remove the MJ 4 rear cover 4 Install the communicatio...

Страница 9: ...tandoffs on the main PCB and insert the 24 pin connector on the ribbon cable into the 24 pin connector P8 on the main PCB See Figure 4 2 below Mount the communications module on the threaded standoffs on the main PCB using the five screws provided 6 32 x 3 8 Screw 5 Comm Mod PCB Ribbon Cable with 24 Pin Connector MJ XL Main PCB 24 Pin Connector P8 P9 MJ 4 Main PCB Figure 4 2 Communications Module ...

Страница 10: ...tic Interface Jumper Locations Table 4 1 Fiber Optic Interface Jumper Settings Jumper Name Position Function Selected State Description 1 2 Auto Repeat Repeat message from Host and any responses from other IEDs Auto repeat for mark 0 or mark 1 2 3 No Repeat Transmit continuously ON for testing Force 0 J14 Auto Repeat Out No Repeat Only transmit a response if being addressed by Host no jumper insta...

Страница 11: ...ic interface Jumpers will not affect the working of the RS 232 485 interface and J10 and J11 RS 232 485 Jumpers will not affect the working of the Fiber Optic interface Though the jumpers J14 J12 and J10 J11 may be placed in the required operational position only one interface can be used at a time 4 4 Replacing the MJ 4 Rear Cover Remove the adhesive strip covering the rectangular opening for the...

Страница 12: ...iber Optic interface and RS232 485 interface are described in Section 4 3 1 and Section 4 3 2 respectively 5 2 Mounting the Communications Module in MJ X Control Panels Follow these steps to install the communications module in the MJ X Control Panel 1 If the control panel is installed on a Siemens regulating device first turn off the power to the MJ X then disconnect the polarized disconnect swit...

Страница 13: ...X base with six 6 32 x 7 16 standoffs Figure 5 2 Ensure that the membrane switch cable is folded over itself and under the communications module printed circuit board as shown in Figure 5 3 6 32 x 3 8 Screw 6 32 x 7 16 Mal e Fem Standoff 6 PCB Cover Pan MJ X Base 6 32 x 3 8 Screw 6 32 x 7 16 Male F Standoff 6 PCB Cover Pan MJ X Base Hexnuts 5 Spacers 5 PCB Cover Pan MJ X Base Threaded Studs 5 Figu...

Страница 14: ...tallation Once the MJ 4 Communications Module is installed in the MJ 4 control panel test the module as follows to ensure proper operation and performance 1 Visually inspect the MJ 4 Communications Module for proper mechanical assembly and cable connections 2 Apply power to the MJ 4 Control Panel and observe the LEDs on the communications module The Power LED should light immediately and stay lit ...

Страница 15: ...al problem with the MJ 4 Communications Module Contact Siemens for assistance 6 2 Performing the Loopback Diagnostic Test The loopback test evaluates the MJ 4 for communications readiness For this test connect the transmit output to the receive input of the communications module When testing the fiber optic interface ensure that the cable used meets the requirements outlined in section 7 1 When te...

Страница 16: ... the long range jumper J12 even for very short cable lengths A 100 140 µm diameter cable can also be used for cable lengths less than 1500 feet Use of this cable requires that the range jumper J12 be set to normal This setting will provide protection against overdriving the receiver Plastic cable is not recommended due to the coupling efficiency of the cable which at short lengths will overload th...

Страница 17: ...ovides 100 percent RFI EMI coverage Table 7 1 RS 485 Cable Specifications Characteristic Value Maximum Typical Impedance 120 ohms Typical Capacitance pF ft 35 Maximum Cable Size 22 AWG Typical DC Resistance 17 ohms 1000 ft Maximum Velocity of Propagation 80 Maximum 7 2 2 RS 485 Cable Grounding Ground the cable shield for all devices on the network Ground the cable shield at only one end to prevent...

Страница 18: ... advantages of the loop topology is that if a line is cut communication is not interrupted By completing the loop in the RS 485 cable one break can be made anywhere in the line without compromising communication with the master device RTU To maintain redundancy avoid open ended runs of the bus Each installation method see Figures 2 4 to 2 6 has advantages and disadvantages The loop method requires...

Страница 19: ...onductor Communication Cable Figure 7 5 Communication Cable Routing Electrical current flowing through a conductor forms a magnetic field around the wire as shown above Interference is coupled into the wires in the cable through electromagnetic fields Just as current through a wire causes a magnetic field to form around it a magnetic field can cause current to flow in a wire This induction of curr...

Страница 20: ...RXD RXD TXD TXD RTS RTS CTS CTS RXD is an input for Data Terminal Equipment DTE and an output for Data Communications Equipment DCE TXD is an output for the DTE and an input for the DCE Personal computer serial ports are configured as DTE and the modems are configured as DCE The communications module RS 232 connections implement DTE 7 3 1 RS 232 Multi drop Wiring Multi drop configurations require ...

Страница 21: ...u items in the order in which they appear on the MJ 4 Control Panel default settings are in bold 1 Program the communications parameters of the MJ 4 Communications Module by pressing the Menu key twice to display the METER menu 2 Then press the left arrow key until the COMMUNICATIONS menu appears Use the up and down arrow keys to access the individual menu items 3 To change the value of the parame...

Страница 22: ... items apply only to the Data Port located on the front of the MJ 4 Control Panel and do not require modification Reg Id Regulator Identification This item allows you to uniquely identify each regulator in the system The Regulator Id is accessible as a data item via the communications module for most of the protocol selections Protocol This item defines the protocol selection for the MJ 4 Communic...

Страница 23: ...amount of time between the RTS output being activated and the start of transmit output data DNP dl Confirm This configuration item defines whether or not to request confirmation from the master station for all responses for the DNP3 0 protocol CM SW RepeatEn This configuration item controls whether software repeat is used for the MJ3A A B1 and B2 protocols Host Addr This configuration item defines...

Страница 24: ...llows interfacing to the MJ 4 Communications Module Up to three MJ 4 units may be connected at a time When connecting the Fiber Optic interface to MJXplorer the auto repeat function must match the setting in the ConfigureÆConfigure MJXplorer menu See section 4 3 1 for setting the Fiber Optic interface jumpers A Fiber Optic to RS 232 driver receiver is required in order to perform these tests on th...

Страница 25: ... can now be set the same way 5 Click the Send button Drag and drop the points up and down in the list boxes to change their point number if desired The top point in each box is point 0 the point below that is point 1 etc Click the Cancel button after points are ordered as desired 6 In the menu bar click File Æ Save and save your file as XXXX dnp 7 Click the Setting button 8 Match the baud rate and...

Страница 26: ...tral U12 Signal 5 VRC1 contacts 6 VRC2 contacts 7 Remote Switch position 8 Manual Switch position Binary Outputs Point Description 0 Tap Raise 1 Tap Lower 2 Auto Inhibit Latch On Off Analog Inputs Point Description 0 R A M switch position 1 Power Flow Direction Indicator 2 VRC contacts status 3 Tap Position 4 Load Current 5 Load Voltage 6 KW 7 Power Factor 8 KW Fwd Dmd 9 KW Rev Dmd 10 Vld Total Ha...

Страница 27: ... 22 Log Setup 23 Alert Status part 1 24 Alert Status part 2 8 2 4 Small 2 x3 Binary Inputs Point Description 0 Tap Pos Known 1 Power Flow Direction 2 Auto Inhibit Status 3 Raise J Motor Signal 4 Lower K Motor Signal 5 Remote Control occurring 6 U2 P2 Switch Position 7 Neutral U12 Signal 8 Operations Count U10 Signal 9 Auto Inhibit Terminal Block Input 10 VRC1 contacts 11 VRC2 contacts 12 Remote Sw...

Страница 28: ...ription 0 Tap Position 1 Load Voltage 2 Load Current 3 Source Voltage Analog Outputs No Analog Outputs in the Simple set currently 8 2 6 Metering Binary Inputs Point Description 0 LOW Voltage Limiting 1 On 1 HIGH Voltage Limiting 1 On 2 Automatic Operation 1 Inhibited 3 Power Flow Direction 0 Fwd 1 Rev 4 R A M Switch 0 Off Manual 1 Auto Remote 5 Voltage Reduction Input 1 0 Open 1 Closed 6 Voltage ...

Страница 29: ...ardware Status 0 All Good 5 Primary Load Current in Amps 6 Secondary Load Voltage 7 Primary Load Voltage 8 Primary Source Voltage 9 kVAR Load 10 Power Factor 11 Compensated Voltage Sec 12 Voltage Reduction in Effect 13 Tap Position 14 Voltage Reduction Status 15 Voltage Limit Status 16 Tap Control Mode Status 17 R A M switch position 18 Load Voltage Harmonics 19 Load Current Harmonics 20 Fwd Volta...

Страница 30: ...puts Point Description 0 Tap Raise 1 Tap Lower 2 Auto Inhibit Latch On Off 3 Active Auto Inhibit Analog Inputs Point Description 0 Tap Position 1 Load Current 2 Load Voltage 3 KVAR 4 KW 5 Power Factor 6 Band Status Indicators 7 Tap Control Mode 8 Op Count Elapsed 9 CM firmware version Analog Outputs Point Description 0 Fwd Bandwidth 1 Fwd Voltage Level 2 Fwd Time Delay 3 Fwd Resistive Compensation...

Страница 31: ... 10 Tap Changer Type 11 Balance Winding 12 Range of Regulation 13 Lower Led Solid Blink 14 U2 P2 Terminal Out 15 Fixed RL On time 16 Log Min Max 17 PT Calc Enable Analog Outputs Point Description 0 Fwd Voltage Level 1 Fwd Bandwidth 2 Fwd Time Delay 3 Clear Contact Statuses and Op Counters 4 Read Overall Status of Contacts 8 2 9 2 x3 Binary Inputs Point Scale Factor Description 0 SF 1 Tap Pos Known...

Страница 32: ...ble Ld Current Dmd Fwd Present 18 SF 1 kVA Dmd Fwd Present 19 SF 1 kVAR Dmd Fwd Present 20 SF 1 kW Dmd Fwd Present 21 SF 10 Load Volts Dmd Fwd Present 22 SF 10 CompVolts Dmd Fwd Present 23 variable Load I Dmd Rev Present Amps 24 SF 1 kVA Load Dmd Rev Present 25 SF 1 kVAR Load Dmd Rev Present 26 SF 1 kW Load Dmd Rev Present 27 SF 10 Load Volts Dmd Rev Present Volts 28 SF 10 Comp Volts Dmd Rev Prese...

Страница 33: ...F 10 Iload 5th harmonic RMS 72 SF 10 Iload 6th harmonic RMS 73 SF 10 Iload 7th harmonic RMS 74 SF 10 Iload 8th harmonic RMS 75 SF 10 Iload 9th harmonic RMS 76 SF 10 Iload 10th harmonic RMS 77 SF 10 Iload 11th harmonic RMS 78 SF 10 Iload 12th harmonic RMS 79 SF 10 Iload 13th harmonic RMS 80 SF 10 Iload 14th harmonic RMS 81 SF 10 Iload 15th harmonic RMS 82 SF 10 Iload 16th harmonic RMS 83 SF 10 Iloa...

Страница 34: ... SF 10 Vsource 31st harmonic RMS 130 SF 1 MJ X Main Proc SW Version 131 SF 1 Number of Resets 132 SF 10 Compensated Voltage Secondary 133 SF 10 Line Frequency 134 SF 10 Percent Regulation 135 SF 10 Voltage Reduction in Effect 136 SF 1 Number of Interval Logs Stored 137 SF 1000 Vld Total Harm Distortion 138 SF 10 Vload Harmonics RMS value 139 SF 1000 Iload Total Harm Distortion 140 SF 10 Iload Harm...

Страница 35: ... 1 kVA Load Dmd Rev Max 190 SF 1 kVAR Load Dmd Rev Min 191 SF 1 kVAR Load Dmd Rev Max 192 SF 1 kW Load Dmd Rev Min 193 SF 1 kW Load Dmd Rev Max 194 SF 10 Load Voltage Dmd Rev Min Volts 195 SF 10 Load Voltage Dmd Rev Max Volts 196 SF 10 Comp Voltage Dmd Rev Min Volts 197 SF 10 Comp Voltage Dmd Rev Max Volts 198 SF 10 Vsrc Dmd Fwd Min 199 SF 10 Vsrc Dmd Fwd Max 200 SF 10 Vsrc Dmd Rev Min 201 SF 10 V...

Страница 36: ...M Errors 248 SF 1 CM QSPI no of Failed Writes 249 SF 1 CM QSPI no of Xfer Cycles 250 SF 1 CM DNP no of requests for not supported items 251 SF 1 CM RAM Error High Address 252 SF 1 CM RAM Error Low Address Analog Outputs Point Scale Factor Description 0 SF 1 Total Operations Count 1 SF 1 Level 1 PW characters 2 SF 1 Cfg PW characters 3 SF 1 Reg PW characters 4 SF 1 Meter PW characters 5 SF 1 Dmd PW...

Страница 37: ... SF 10 Line Comp React Fwd Volts 52 SF 10 Line Comp Resist Fwd Volts 53 SF 1 Control Operating Modes 54 SF 10 Set Voltage Forward Volts 55 SF 1 Time Delay Forward seconds 56 SF 1 Control Communications Address 57 SF 1 Comm Port Baud Rate 58 SF 1 Comm Port Handshake Mode 59 SF 1 Communications Port Re Synch Time Characters no characters 60 SF 1 Communications Port Transmit Enable Delay msec 61 SF 1...

Страница 38: ... versions not included in this list please contact your Siemens representative Version 2 13 Contains full set of 370 DNP3 0 points see 2 x3 points list in Section 8 2 9 Version 2 14 Contains limited set of 64 DNP3 0 points see 2 x4 points list in Section 8 2 3 Version 3 01 Level 2 implementation of DNP3 0 no DNP points by default must use the DNP Configure program to load the desired DNP points on...

Страница 39: ... 0 dBm Normal Range Minimum Output Power 20 0 dBm Long Range 23 0 dBm Normal Range Numerical Aperture 0 49 Optical Port Diameter 290 µm Receiver Peak Input Power Logic Level Low 24 0 dBm Min to 9 2 dBm Max Peak Input Power Logic Level High 40 0 dBm Max System Wavelength 820 nanometers nominal Connector Type ST Fiber Type Glass 62 5 125 µm 5dB m Data Rate 5 Mbaud design 19 2 Kbaud tested Maximum Op...

Страница 40: ......

Страница 41: ...Siemens Energy Inc P O Box 6289 Jackson MS 39288 21 115527 024 rev02 Manual 11 09 1994 2009 Siemens Energy Inc ...

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