Bacharach MVR-300 User Manual

Also see for MVR-300: Installation guide

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Bacharach MVR-300 User Manual Manual pdf 34 page image

MVR-300™ Refrigerant Gas Detector34 P/N: 6203-9000 Version 1SECTION 8. TECHNICAL DATA8.1 ApprovalsSpecification DescriptionEN 50270:2015 Electromagnetic compatibility. Electrical apparatus for the detection andmeasurement of combustible gases, toxic gases or oxygenCE Approval pendingUL/CSA/IEC/EN 61010-1 Approval Pending8.2 Specifications for Modbus RTU Digital Communication over RS-485Specification DescriptionBaud Rate 9,6001 or 19,200 (selectable)Start Bits 1Data Bits 8Parity None1 , odd, even (selectable)Stop Bits 11 or 2 (selectable)Retry Time 500 ms, min time between retriesEnd of Message Silent 3.5 characters1 - Default Values8.3 Power Supply and Relay SpecificationsSpecification DescriptionOperating Voltage 100 to 240 VAC, 50/60 HzOperating Power 4 W maxPower Monitoring Green LEDRelay Rating 2 SPDT; 1 A at 30 VDC, 1 A at 125 and 250 VAC, resistive loadAudible Alarm Internal Buzzer; open enclosure85 dBA at 10 cm (4 in); 80 dBA @ 30 cm (12 in)Alarm Delay 0 to 15 minutes (selectable 0, 5, 10, 15)8.4 Wiring SpecificationsSpecification DescriptionPower 3-core cable, 14 to 20 AWG (0.5 to 2.0 mm 2)Relay 3-core cable, 18 to 20 AWG (0.5 to 1.0 mm 2)Modbus Network 2-core twisted pair shielded cable 18 to 24 AWG (0.2 to 1.0 mm 2) with120 Ohm characteristic impedance; Use Belden 8761 or similar;Max diameter of cable plus heat shrink must be ≤ 5 mm (0.2 in) (to fitboot)www. .com information@itm.com1.800.561.8187