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Macurco MRS-485 Modbus RS-485 Adapter

REV – 1.0

[34-2900-0019-7]

P a g e

Maintenance

The BRS-485 does not require regular maintenance. All maintenance and repair of products manufactured by

Macurco are to be performed at the appropriate Macurco manufacturing facility. Macurco does not sanction

any third-party repair facilities.

WARNING

Do not disassemble unit or attempt to repair or modify any component of this instrument. This instrument

contains no user serviceable parts, and substitution of components may impair product performance and

void product warranty.

CAUTION

Avoid the use of harsh cleaning materials, abrasives, and other organic solvents. Such materials may
permanently scratch the surfaces and damage the LEDs, labels, or instrument housing.

7.1

Cleaning

Cleaning of the external surfaces is best carried out using a damp cloth with a mild detergent or soap. Use a

vacuum cleaner with soft brush to remove dust or contamination. Do not blow out the sensor with compressed
air.

Содержание BRS-485

Страница 1: ...IMPORTANT Keep these user instructions for reference Macurco BRS 485 Multi protocol RS 485 Adapter User Instructions ...

Страница 2: ......

Страница 3: ...Location 8 3 2 Installation 8 3 3 Connection 10 3 4 Wiring 11 3 4 1 Signal Wire 11 3 4 2 Topology 11 3 4 3 Length 12 3 4 4 Grounding 12 3 4 5 Power Wire 13 4 Configuration 14 4 1 Macurco NPU Software 15 4 2 Addressing and Communication Settings 16 4 3 Firmware and Configuration Update 18 5 Operations 20 5 1 Power up 20 5 2 4 20mA Loop 20 5 3 Normal Operation 20 6 Troubleshooting 21 6 1 On Board Di...

Страница 4: ... 7 Maintenance 23 7 1 Cleaning 23 8 Testing 24 8 1 Operation Test 24 8 2 Manual Operation Test 25 9 Appendix A 26 10 Appendix B Table of Figures 30 11 Macurco Gas Detection Product Limited Warranty 31 Technical Support Contact Information 32 General Contact Information 32 ...

Страница 5: ... Devices that accept Modbus BACnet Metasys and Siemens communication protocol 1 1 List of warnings WARNING Each person using this equipment must read and understand the information in this user manual before use Use of this equipment by untrained or unqualified persons or use that is not in accordance with this user manual may adversely affect product performance This equipment may not function ef...

Страница 6: ...a family of fully programmable low voltage dual relay gas detectors controllers and transducers for BAS HVAC and Fire Security applications The 6 Series detectors are used to measure the concentration of various gases and provide feedback and automatic control to help ensure a safe environment Carbon Monoxide Methane Propane Hydrogen Nitrogen Dioxide and other gases 2 2 Do NOT use for The BRS 485 ...

Страница 7: ...using RTU Transmission Mode Commercial type enclosure to protect and support the electronics Tricolor LED indicates power test and communication status Mounts behind the detector inside of a standard 4 x 4 electrical box Held in place on the back of the 6 Series detector with a single screw USB connection to configure address and communication protocol and settings RS 485 termination uses 3 pin co...

Страница 8: ...on condensing Connections plugs terminals Color Blue Mounting screw and screwdriver included BRS 485 operates as Modbus RTU Slave BACnet MSTP Server Metasys N2 Slave or Siemens FLN Slave Baud Rate Modbus 2400 4800 9600 19200 default 38400 57600 115200 bps BACnet 9600 19200 38400 default 57600 76800 115200 bps Metasys N2 Slave 9600 Siemens FLN Slave 2400 4800 9600 19200 default 38400 57600 115200 b...

Страница 9: ...ser instructions of the specific Macurco 6 Series gas detector to which the BRS 485 will be connected 3 2 Installation The Macurco BRS 485 Adapter converts the Macurco 6 Series 4 20mA analog output to a digital output for use with addressable network systems The Macurco 6 Series is a family of fully programmable low voltage dual relay gas detectors controllers and transducers for BAS HVAC and Fire...

Страница 10: ...f gas reaches or exceeds the alarm settings See Operation of the detector User Instructions for details on relay settings 8 The alarm relay can be configured to normally open default N O or normally closed N C and will activate if the gas concentration exceeds alarm set point It will deactivate once the gas concentration drops below the alarm set point Note that the disable setting will cause the ...

Страница 11: ... the ends of the RS 485 bus The power for the BRS 485 adapter is connected via a two terminal screw type connector 12 to 24 VAC or 12 to 24 VDC and no polarity Note Running the Modbus cable adjacent to or in the same conduit with high voltage wires is not recommended as there may be interference from the high voltages Line polarization should not be required for the BRS 485 but may be required for...

Страница 12: ...eristic impedance of higher than 100 Ohms may be preferred especially for 19200 and higher baud rates Note It is recommended to always use twisted wires to reduce noise and allow for reliable data communication over greater distances Use at least 3 conductor wire with one twisted pair providing a pair for signal A B and Common COM connections For best performance use shielded 3 conductor wire with...

Страница 13: ...the number of loads on the daisy chain and the network configuration 2 wire For a maximum 9600 Baud Rate and AWG26 or wider gauge the maximum length is 1000m 3281ft The derivations must be short never more than 20m 65 5ft If a multi port tap is used with n derivations each one must respect a maximum length of 40m 131ft divided by n 3 4 4 Grounding The Common circuit COM must be connected directly ...

Страница 14: ...rco detectors are rated for operation between 12 and 24 VDC or VAC the voltage drop between the power supply and the BRS 485 should not be an issue if the recommended power wire gauge guidelines below are followed The terminals will accept wire from 16 to 28 AWG To install a wire strip back approximately 0 25 in 6 mm of insulation and insert the bare wire into the terminal Tighten the screw clamp ...

Страница 15: ...Macurco MRS 485 Modbus RS 485 Adapter REV 1 0 34 2900 0019 7 14 P a g e 4 Configuration Figure 4 1 NPU Program ...

Страница 16: ...asys and Siemens are protocol supported by BRS 485 Address The address of the device in the network This setting is not available for BACnet MAC Address Defines the address 0 127 that the BRS 485 node will reside on the network This setting is available for BACnet only Baud Rate Baud rate of the network Parity Parity for the communication Response Delay Time in milliseconds that the driver waits b...

Страница 17: ...Defines the highest allowable address 0 127 for MS TP master nodes on the network Any address higher than this will not receive the token from the unit Note that this value must be greater than or equal to the configured MAC Address es If the highest address on the network is unknown set this field to 127 This setting is available for BACnet only 4 2 Addressing and Communication Settings Connect B...

Страница 18: ...r any configuration change disconnect the USB cable from BRS 485 and perform power reset for BRS 485 Following table shows the valid addresses for different protocols Communication Protocol Valid Address Modbus RTU 1 247 BACnet MS TP 0 127 Metasys N2 1 255 Siemens FLN 1 98 Table 4 1 ...

Страница 19: ...twork Parameter Utility Software b If BRS 485 is connected to PC via USB the software will display home screen like one in Figure 5 1 If Software does not detect the BRS 485 it will display No Device Connected Make sure software detects the panel before proceeding c Go to File on the top left corner of the software and select Update Device d A new window will pop up to select the file Select the D...

Страница 20: ...9 P a g e Place the EOL jumper on one of the following positions Y 120 ohm N No termination default If Line Termination requirements are different than those provided then the line termination will need to be provided by the installer Figure 4 4 BRS 485 Front view ...

Страница 21: ...e BRS 485 will monitor the 4 20 mA current output of the detector At power up and during its warm up period the 6 Series detector will communicate its sensor type over the 4 20 current output using a custom protocol The BRS 485 will automatically register each 6 Series detector as it is programmed with information about all the detectors to which it can be connected The BRS 485 will use this infor...

Страница 22: ...e connect the power line to the BRS 485 6 1 2 Error Codes Solid RED The BRS 485 detected an error and no Modbus communications are in progress RED with random bursts of AMBER The BRS 485 detected an error and AMBER is displayed when data are received or transmitted over the RS 485 line There are a number of conditions which are signalized in this way Current EEPROM Settings not initialized Current...

Страница 23: ...transmitted over the RS 485 line Green Red Alternating every 200ms Operation is normal and a USB connection has been made to a PC Solid Red The BRS 485 detected an error BRS 485 Status is non zero and no RS 485 communications are in progress Red with Bursts of Amber The BRS 485 detected an error BRS 485 Status is non zero and Amber is displayed when data is received or transmitted over the RS 485 ...

Страница 24: ... any component of this instrument This instrument contains no user serviceable parts and substitution of components may impair product performance and void product warranty CAUTION Avoid the use of harsh cleaning materials abrasives and other organic solvents Such materials may permanently scratch the surfaces and damage the LEDs labels or instrument housing 7 1 Cleaning Cleaning of the external s...

Страница 25: ...ts after installation Check that the detector operating LED light is illuminated Green continuously If not do not proceed with the tests If the unit is in error mode contact your local representative or Macurco technical service representative for information on resolving the problem 1 Remove the single screw in the middle of the front cover of the 6 Series detector 2 Remove the front cover 3 Obse...

Страница 26: ...Exception for Oxygen with OX 6 8 When testing is completed reassemble the unit or units 8 2 Manual Operation Test This option gives the user the opportunity to manually initiate an individual test for the audible buzzer each relay the analog output and the sensor response to gas From normal operation mode press the Next button 2 times to get to the Test Mode tSt Press the Enter button once to get ...

Страница 27: ...For dual sensor CX 6 S1 refers to carbon monoxide sensor and S2 refers to nitrogen dioxide sensor BRS 485 s network driver does not start up until a valid Macurco detector is recognized and hence objects registers are not exposed until after successful registration with valid Macurco detector Following table list valid detector type for BRS 485 along with other detector details Detector Sensor Typ...

Страница 28: ...use with CD 6H and CD 6MC is not recommended for Siemen FLN protocol if FLN master interprets 16 bit values as signed integer NOTE Due to limitation of Siemens FLN protocol and variation in range and resolution of Macurco detectors BRS 485 when used with CD 6G for Siemens FLN protocol will round readings for CD 6G to one decimal place instead of two decimal place readings displayed on CD 6G detect...

Страница 29: ...to time left until the detector connected indicates calibration overdue But value represented is the intervals of 3 hours until calibration overdue Cal Due Days Description 255 Calibration Due feature is disabled 254 Unknown value not transmitted by detector yet 253 Calibration Period feature not supported by detector 241 There are more than 30 days until calibration due 1 240 Indicates number of ...

Страница 30: ...ration and should not occur in the field When incompatible unknown detector is connected to BRS 485 f Warm up This is set during the first 60 seconds after power is applied to BRS 485 Since objects are not exposed until successful registration by BRS 485 this object might not appear for the first 30 seconds of power up g Over Range This is set when there is over range signal on the current loop h ...

Страница 31: ... is connected to unknown incompatible detector 10 Appendix B Table of Figures Figure 3 1 BRS 485 Installation Expanded 9 Figure 3 2 Connection Expanded 10 Figure 3 3 Modbus Wiring 12 Table 3 1 Power Wire lengths 13 Figure 4 1 NPU Program 14 Figure 4 2 16 Table 4 1 17 Figure 4 3 18 Figure 4 4 BRS 485 Front view 19 ...

Страница 32: ...oes not apply to units that have been altered or had repair attempted or that have been subjected to abuse accidental or otherwise The above warranty is in lieu of all other express warranties obligations or liabilities THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO 2 YEARS FROM THE PURCHASE DATE Macurco shall not be liable for any incid...

Страница 33: ...tact Information Phone 1 844 325 3050 Fax 1 605 951 9616 Email support macurco com Website www macurco com support General Contact Information Phone 1 877 367 7891 Fax 1 605 951 9616 Email info macurco com Website www macurco com Rev 1 0 Issue Date 4 7 2021 Document No 34 2900 0019 7 Aerionics 2021 All rights reserved Macurco is a trademark of Aerionics Inc ...

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