Allen-Bradley 857-RAA, User Manual

Page 1: ...857 RAA 857 RAD RTD Scanner Catalog Numbers 857 RAA 857 RAD User Manual OriginalInstructions...

Page 2: ...nformation circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited T...

Page 3: ...or PTC Connections 16 Chapter4 Configure the Base 857 Relay Connect a Bulletin 857 Relay to PC 17 Connect to the 857 RAA RTD Scanner 18 Protocol Configuration to Connect the 857 RAA to the 857 18 Exte...

Page 4: ...ebruary 2018 Table of Contents AppendixA Configure the 857 RAD Analog Outputs Example 1 mA Output Scaling for IL 35 Example 2 mA Output Scaling for ULine 36 Example 3 mA Output Scaling for Bidirection...

Page 5: ...on 857 Protection System for Feeder and Motor Protection Series A publication 857 UM001 Providesinformationonparameters installation dimensions troubleshooting control functions and specifications Set...

Page 6: ...6 Rockwell Automation Publication 857 UM002C EN P February 2018 Preface Notes...

Page 7: ...A uses one fiber optic cable only TX while the 857 RAD uses a dual fiber optic cable configuration TX and RX The RTD scanners can also be mounted remotely up to 2000 m from the base 857 relay Catalog...

Page 8: ...ounded metal enclosure 2 Glass fiber Tx communication 3 Not used on this model 4 RTD inputs 12 channels 3 wire connection shield channel 5 Power connector and earthing connection 6 DIN rail mounting F...

Page 9: ...closure 2 Glass Fiber Rx communication 3 Glass Fiber Tx communication 4 Not used on this model 5 Not used on this model 6 Address DIP switch 7 RTD inputs 12 channels 3 wire connection shield channel 8...

Page 10: ...10 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 1 Layout Notes...

Page 11: ...Scanner Figure 5 Dual Glass Fiber Connection to the 857 RAD Scanner and the 857 Relay Fiber Optic Interface Module mounted to the Option Module 857 RAA Fiber Tx Multimode Fiber Optic Cable Diameter 62...

Page 12: ...e 857 RAD scanner The slave address must match the setting in the base 857 relay The switch position is ON when the switch is turned DOWNWARDS Table 1 LE 1 Optical Fiber Communication Setup Position F...

Page 13: ...lock of 256 addresses 0 255 However it is very important to note that the Modbus protocol that is used between the RTD scanner and the base 857 relay restricts the use of addresses 0 and others larger...

Page 14: ...14 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 2 Application Notes...

Page 15: ...r 3 Wiring Configurations RTD Connections RTD connections are the same for all versions of the RTD Scanners Figure 7 shows the proper way to connect RTDs Figure 7 Connections of RTDs Typical Recommend...

Page 16: ...D mA Input and mA Output Connections The RTD channel number for each terminal connection can be confirmed by viewing it from the top of the RTD scanner see Figure 3 Recommended RTD Cable type Shielded...

Page 17: ...3 3 to the front panel of the relay Figure 7 Figure 10 Connecting Cable 857 VX003 3 to the Front Port on the 857 Relay For more information about communication between Bulletin 857 relay and a PC refe...

Page 18: ...nfiguration in SetPointPS 2 In the Extension Port protocol section confirm External I O is selected 3 If it is not click the pulldown menu and select External I O a IMPORTANT The unit Bulletin 857 rel...

Page 19: ...t to 9600 bits per second bps and the Data Parity is always Even The 857 RAA input settings are shown in Table 4 IMPORTANT If a parameter is changed it will be highlighted in red This indicates that a...

Page 20: ...guration Table 5 RTD Inputs Quick Setup Parameters 1 1 Only the first 12 channels are used for RTD inputs Channels 13 16 only used with 857 RAD Parameter Value s To Modify AI Enabled On Off 1 Select t...

Page 21: ...device The available address range is 1 247 See the side and top of the 837 RAD enclosure for switch position Figure 3 The baud rate is fixed at 9600 bps with even parity Protocol Configuration for 85...

Page 22: ...Even The External I O Bit Rate should be set to 9600 bits per second bps and the Data Parity is always Even The 857 RAA input settings are shown in Table 6 IMPORTANT If a parameter is changed it will...

Page 23: ...or details of the Output Matrix configuration Table 7 RTD Inputs Quick Setup Parameters Parameter Value s To Modify AI Enabled On Off 1 Select the row of the channel you want to modify 2 Choose the de...

Page 24: ...te location under the AI Enabled area Turn ON or OFF each individual channel These will be the last four lines of the table AI Slave Address 1 247 The AI Slave Address must match the hardware selectio...

Page 25: ...O protocol selection is RTDinput the AI Slave Address AI Modbus Address AI Register Type and AI Signed can be left to their default values Table 8 Parameter Values and Description Parameter Value Exp...

Page 26: ...in the 0 20 mA range Table 9 857 RAA RAD External I O Registers Modbus Register Properties RTD Channel 1 resistance 301 Read RTD Channel 2 resistance 302 Read RTD Channel 3 resistance 303 Read RTD Cha...

Page 27: ...the values set for the parameters mA Min mA Max Linked Val Min Max and Modbus Min Max parameters mA Min User defined See Table 11 on page 28 for the various measurandsthat canbe linkedtoany of the fo...

Page 28: ...35 This is the maximum value which is sent to the 857 RAD via Modbus protocolinordertosetthemaximum value for the mA Max parameter Typical values mA Max 20 is equal to a Modbus Max 20000 The relations...

Page 29: ...the 857 RAD is lost when using Modbus RTU protocol then Each sensor channel value freezes AI error counter increases in the External analog inputs menu There are two status indicators within the Outpu...

Page 30: ...30 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 4 Configure the Base 857 Relay Notes...

Page 31: ...time s 1 for all channels mean value 1 RTD open circuit detection 450 RTD short circuit detection 1 RTD sensor function Off Winding Bearing Ambient Other Table 13 Analog Inputs 1 1 857 RAD only Descri...

Page 32: ...AWG Table 17 Supply Voltage Description Value Rated voltage See Catalog Number Explanation on page 7 Power consumption W 1 normal conditions Terminal block maximum wire dimensions Phoenix MSTB or equi...

Page 33: ...s III 6 kV contact discharge 8 kV air discharge Fast transients EFT EN 61000 4 4 class III 2 kV 5 50 ns Surge EN 61000 4 5 class III 1 kV differential mode 2 kV common mode Conducted RF IEC EN 61000 4...

Page 34: ...34 Rockwell Automation Publication 857 UM002C EN P February 2018 Chapter 5 Specifications Notes...

Page 35: ...IL AO Link measurand IL Minimum Analog Output value 0 mA Maximum Analog Output value 20 mA Linked minimum value 0 A Linked maximum value 300 A Modbus minimum value 0 Minimum Analog Output value x 100...

Page 36: ...A Output Scaling for ULine AO Link measurand ULine Minimum Analog Output value 4 mA Maximum Analog Output value 20 mA Linked minimum value 0V Linked maximum value 15 000V Modbus minimum value 4000 Min...

Page 37: ...or Bidirectional Power Minimum Analog Output value 4 mA Maximum Analog Output value 20 mA Linked minimum value 2000 kVAR Linked maximum value 6000 kVAR Modbus minimum value 4000 Minimum Analog Output...

Page 38: ...38 Rockwell Automation Publication 857 UM002C EN P February 2018 Appendix A Configure the 857 RAD Analog Outputs Notes...

Page 39: ...Rockwell Automation Publication 857 UM002C EN P February 2018 39 Appendix B Construction and Mounting Figure 16 DIN rail Mounting...

Page 40: ...40 Rockwell Automation Publication 857 UM002C EN P February 2018 Appendix B Construction and Mounting Figure 17 Wall Mounting...

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