Macurco MRS-485 Modbus RS-485 Adapter
REV – 1.0
[34-2900-0019-7]
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Installation Instructions
The following instructions are intended to serve as a guideline for the use of the Macurco BRS-485 Adapter. It is
not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility. If you
have any doubts about the applicability of the equipment to your situation, call Technical Support at 844-325-
3050.
WARNING
This equipment may not function effectively below 0°F or above 125°F (-18°C or above 52°C). Using the
detector outside of this temperature range may adversely affect product performance.
3.1
Location
Refer to the user 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 & Security applications. The 6-Series
detectors are used to measure the concentration of various gas and provide feedback and automatic control to
help ensure a safe environment: Carbon Monoxide, Methane, Propane, Hydrogen, Nitrogen Dioxide and other
gases.
1.
Remove the 4-20mA/Power connector from the Macurco 6-Series gas detector.
2.
Plug the BRS-485 adapter into the empty 4-pin socket.
3.
Install the provided BRS-485 screw.
4.
See the wiring diagram for wire connection.