485CARLP9A B&B Electronics

485CARLP9A4300 - pg. 1/1 Carrier HVAC Converter CE Includes Send Data Control Model 485CARLP9A The Model 485CARLP9A is an RS-232 to RS-485 converter that allows you to connect your laptop PC to Carrier HVAC equipment. The 485CARLP9A is a port-powered, half-duplex RS-232 to RS-485 converter with send data control. The unit converts TD and RD RS-232 lines to balanced RS-485 signals and supports three-wire (Data A, B, and Signal Ground reference) RS-485 communications only. The converter is powered from the RS-232 handshake lines, RTS, CTS and DTR, DSR, CD. The handshake lines are looped back on each other and can be in either state. No handshake change is necessary so no software is required to control the lines. The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled. This prevents data from being echoed back into the RS-232 device. The RS-232 side has a DB-9 female connector. The RS-485 side has a six-position RJ11 connector. NOTE: This converter is not optically isolated. Connections Regardless of the system, the 485CARLP9A must be connected with the proper polarity (See Table 1). With no data being sent and the driver enabled, the RS-232 line should be negative and the Data(A) should be negative with respect to Data(B). Proper operation of any RS-485 system requires the presence of a signal return path between the signal grounds of the equipment at each end of an interconnection. This circuit reference may be established by a third conductor connecting the common leads of devices, or it may be provided by connections in each equipment to an earth reference. When the circuit reference is provided by a third conductor, the connection between the signal grounds and the third conductor should contain some resistance (e.g. 100 ohms) to limit circulating currents when other ground connections are provided for safety. DECLARATION OF CONFORMITY Manufacturers Name: B&B Electronics Manufacturing Company Manufacturers Address: P.O. Box 1040 707 Dayton Road Ottawa, IL 61350 USA Model Number: 485CARLP9A Description: RS-232 to Rs-485 Data Converter with Send Data Control, Port-powered, DB9 to RJ45 Type: Light industrial ITE equipment Application of Council Directive: 89/336/EEC Standards: EN 50082-1 (IEC 801-2, IEC 801-3, IEC 801-4) Table 1: 485CARLP9A Pin-Outs EN 50081-1 (EN 55022, IEC 1000-4-2) EN 61000 (-4-2, -4-3, -4-4, -4-5, -4-6, -4-8, -4-11) Signal RJ11 Pin ENV 50204 EN 55024 Data A (-) 2 Data B (+) 5 Signal Ground 4 Michael J. Fahrion, Director of Engineering Specifications Communication: Two-wire with Signal Ground reference Data Rate: 115.2K Baud max. RS-485 Power: Port-powered from handshake lines Dimensions: 3.0 x 1.3 x 0.9 in Temperature Range: 0C to 70C B&B Electronics Revised November 2000 This product designed and manufactured in USA of domestic and imported parts by X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Interface Modules category: Click to view products by B&B Electronics manufacturer: Other Similar products are found below : IFD8520 cPCI-3544 422CON ATX6022/14GP7 ATX6022/8 AX93221-24/48 FC6A-EXM2 OPT8AP-AE 96RMKVM-19V1C-A 60016- 011 60016-014 60006-008 60011-075 HPCI-14S12U cBP-3208 cBP-3062A FAB205-6P5 ATX6022/6 60016-012 96RMKVM-17V1C-A MOS-1120Y-0201E 96RMLCD-17V1-A 96RMKVM-17V8C-A 60004-005 60016-017 60006-009 60016-035 60016-034 60016-031 60016-030 60016-026 60016-024 60016-018 60016-007 60016-005 60007-002 60006-010 AXX10GBTWLHW3 382-BBEH 555-BDCL K6CMISZBI52 426451401-3 60011-093 MIC-3620/3-BE MPCIE-UART-KIT02-R20 RSM232 PCIE-1680-AE BB-FOSTCDRI 73-544-002 UC-313