5B Series 16 Channel Backplane 5B02 FEATURES Mix and Match 5B Series I/O Module Capability Factory Mutual (FM) Approved Approved for Use in Class I, Division2, Groups A, B, C, and D Locations. CE Certified: EMC Directive in Heavy Industrial Applications 1500 V rms Channel/Channel and Input/Output Isolation 16- channels -25oC to +85oC Temperature Range Single Threaded Insert for module Hold Down FUNCTIONAL BLOCK DIAGRAM APPLICATIONS Industrial Signal Conditioning Industrial Signal Isolation Industrial Signal Filtering PRODUCT OVERVIEW To address diverse applications, the 5B Series includes a family of backplanes and mounting cards which provide a complete signal conditioning solution. The 16-channel backplane can be mounted in a 19” x 3.5” panel space, providing an economical means to handle signals. Figure 1 5B02 Functional Block Diagram This backplane provides four screw terminals per channel for all field connections. These connections satisfy all transducer inputs, process current outputs and provide transducer excitation when necessary. A cold junction temperature sensor (model AC1361) sensor is also supplied on each channel to accommodate thermocouple input modules. A pair of pin sockets permits installation of the AC1362 current sensing resistor used with the 5B32 current input module on the 16channel backplane, a 26-pin system interface connector provides high level I/O for all channels. The 5B02 Series backplane requires a regulated +5VDC external power source. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved. 5B02 GENERAL DESCRIPTION connects +5 VDC power common to input/output common (backplane measurement ground). A connection between power common and input/output common is important for the 5B Series modules to function properly; however, if this connection is made elsewhere in your system (the best place is usually near the A/D or D/A converters), W4 should be cut since a ground loop could result. Model 5B02 Backplane - The 5B02 diagrammed in Figure 1, is a 16 channel backplane. It incorporates input and output buses that take advantage of the internal series output switches in the input modules and the track-and-hold in the output module. Designers integrating the 5B02 into a measurement and control system do not need external multiplexers and can use a single digital-to-analog converter to server numerous output channels. Digital outputs from the host data acquisition system are used to address the 5B Series modules and designate inputs and outputs. Only one analog input, one analog output, and a number of digital outputs are required to address up to 64 analog input/output channels. Model 5B02 Address Selection Jumpers – The 5B02 backplane can hold 16 modules in any combination of inputs or outputs. Address decoders on the backplane (separate decoders are provided for inputs and outputs) determine which module is read (inputs) or driven (outputs). To permit system expansion, up to four backplanes can be daisy-chained on the system I/O ribbon cable for a total of 64 channels. Jumpers on each backplane (labeled SH1-5 and SH6-10) determine the block of 16 addresses assigned to each backplane. Input (read) and output (write) addressing are completely independent; in all cases, Jumpers 1-5 control inputs and 6-10 control outputs. Independent addressing might be used, for example, to update output modules without interrupting the monitoring of input modules. Model 5B02 System Connectors – Signal connections between the 5B02 backplane and the associated measurement or control system are made at P1. One signal path is provided for inputs and one for outputs. Input and output modules are independently addressed by two sets of six address pins and an enable pin. In addition, a number of grounded pins are present in the connector pin-out to provide shield conductors in the ribbon cable. In some cases, discussed below, the ground conductors will not provide an accurate signal reference, so a SENSE pin is also provided in the pin-out. Several jumper and component options in the backplane provide optimum ground connections for various circumstances. Backplanes are factory configured with jumpers at Positions 1 and 6. This sets up the backplane as a stand-alone 16 –channel system; the two highest order address bits in the read and write addresses are ignored. Moving the jumpers to any other position in the two blocks enables decoding of the full six address bits. The exact position of the jumper determines address position for the backplane. To use multiple backplanes in this manner, connect the corresponding I/O connector pins of each backplane in parallel. CAB-01 is a ribbon cable with three 28-pin connectors designed for this purpose. Model 5B02 Grounding – Each 5B02 backplane is factory configured with Jumpers W1, W2, and W4 installed. Jumper W1 grounds the shield wires in the ribbon cable (Pins 2,5, and 6) at the 5B02 backplane. This will usually be the primary ground connection between the 5B02 and the measurement system. This connection is required if output modules will be used on the backplane. It is also required if there is no high impedance sense input (input low of a differential or pseudo-differential system) available on the measurement system. Jumper W2 connects the sense input, if available, to Pin 25 so that the 5B02’s ground is read. It can be left in place at all times. Jumper W4 Figure 2 Rev. 0 | Page 2 of 7 5B02 5B02 Specifications (typical @ +25°C and Vs =+5 V dc Power) Description Number of Channels Model 5B02 16 ISOLATION Input-to-Output Continuous 1500 V rms, Maximum Channel-to-Channel Continuous 1500 V rms, Maximum MECHANICAL DIMENSIONS – with modules 3.5” x 17.4” x 3.2” (88.9 mm x 442 mm x 81.3 mm) WEIGHT 11.25 oz. (305 g) MOUNTING STANDOFFS 7 COLD JUNCTION TEMPERATURE SENSORS Number provided on backplane 16 Type Model AC1361 o Initial Accuracy @ +25 C +0.5oC Accuracy +5oC to +45oC +0.5oC (+0.0125oC/oC) SYSTEM I/O CONNECTOR Number 1, 26-pin Type Amp 746290-6 ADDRESS ENABLE INPUTS Max Logic “0” +0.8 V Min Logic “1” +2.0 V Max Logic “1” +7.0 V POWER SUPPLY OPTIONS Voltage; Operating +5 VDC +5% Voltage; Max Safe Limit – with modules +6.0 VDC Max. Current – without modules 32mA Fuse; (F1) 4 Ampere Littlefuse © Type 252 004 Environmental Temperature Range Rated Performance -25°C to +85°C Operating -40°C to +85°C Storage -40°C to +85°C Relative Humidity, 24 hours 0 to 95% @ +60°C noncondensing Rev. 0 | Page 3 of 7 5B02 PIN CONFIGURATION AND FUNCTIONAL DESCRIPTION Table 1. Pin Function Descriptions— Figure 3 5B02 Pin-outs Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Description V READ I/O COM V WRITE SNS LO I/O COM I/O COM READ (INPUT) ADDR LSB READ (INPUT) ADDR BIT 2 READ (INPUT) ADDR BIT 3 READ (INPUT) ADDR BIT 4 READ (INPUT) ADDR BIT 5 READ (INPUT) ADDR MSB READ (OUTPUT) ADDR LSB READ (OUTPUT) ADDR BIT 2 READ (OUTPUT) ADDR BIT 3 READ (OUTPUT) ADDR BIT 4 READ (OUTPUT) ADDR BIT 5 READ (OUTPUT) ADDR MSB READ ENB (0) WRITE ENB (0) NO CONNECTION RESERVED NO CONNECTION NO CONNECTION D COM D COM ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. 0 | Page 4 of 7 5B02 OUTLINE DIMENSIONS Figure 3 Outline Dimensions Rev. 0 | Page 5 of 7 5B02 NOTES Rev. 0 | Page 6 of 7 5B02 NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. D05411-0-2/05(0) Rev. 0 | Page 7 of 7