isolated, field configurable analog input 6b13 / 6b13hv 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 ri ghts of analog devices. trademarks and registered trademarks are the proper ty of their respective companies. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.326.8703 ? 2004 analog devices, inc. all rights reserved. features single-channel isolated signal-conditioning modules. accepts outputs from platinum, nickel and copper rtd sensors. complete microcomputer-based data acquisition systems. can be remotely reconfigured for various sensor types and input ranges. applications process monitoring & control test stand automation machine monitoring material testing remote energy mangement laboratory data acquisition product overview the 6b series delivers sensor-to-host signal-conditioning for remote applications. software-configurable for a wide variety of sensor types, including: analog input, analog output, and digital i/o, the 6b series is intended for remote data acquisition, machine monitoring, remote energy management and process monitoring and control applications. including transformer-based isolation, ranging, linearization, a/d conversion and rs-232c/rs-485 serial communication for up to 256 channels per serial port, the 6b series modules and boards are a complete, low-cost interface between computers and analog signals. all 6b series input/output modules are fully encapsulated and identical in pin-out and size, facilitating their ability to be mixed and matched with all other 6b series modules on the same backplane. the 6b series is fully rated over the industrial temperature range of -25 o c to +85 o c. each 6b series module and board is a complete microcontroller-based process monitoring and control system, with all calibration, address and linearizing parameters stored in non-volatile memory. being microcontroller-based, 6b series modules can be configured for various sensor types, including rtd and thermocouple, and a wide variety of input ranges. this reduces the number of different modules that need to be used in a given application and carried in inventory. functional block diagram figure 1. 6b13 & 6b13hv functional block diagram designed for industrial applications, the 6b series modules incorporate transformer-based isolation with surface-mount manufacturing technology C providing increased reliability at low cost. the compact, rugged 6b series analog modules can be mixed and matched on a 16-channel backplane for high density, remote process monitoring and control. communications between backplanes, modules and host is in ascii over an rs-232c link or rs-485 bi-directional serial bus. circuitry to convert rs-232c to rs485 is built into the 6b backplane. baud rates are software programmable, with speeds up to 19.2 k baud. the 6b series digital subsystem communication is compatible with the overall 6b series communication protocol. each digital i/o board can be configured for its address, baud rate and checksum status. connection to the 16 and 24-channel solid state relay backplanes is by a 50-conductor ribbon cable. this enables interfacing with input and outputs from 4 v to 240 v. power control modules are also available that can switch up to 3a and come with a variety of ratings for low voltage dc up to 280 vac.
6b13 / 6b13hv rev. 0 | page 2 of 8 general description the 6b13 and 6b13hv are single-channel isolated signal- conditioning modules which accept outputs from platinum, nickel and copper rtd sensors. unlike conventional signal conditioners, the 6b13 and 6b13hv are complete microcomputer-based data acquisition systems. a major advantage of the on-board microcontroller is its ability to be remotely reconfigured for various sensor types and input ranges. software configuration C the 6b13 and 6b13hv linearize 100 ? platinum rtds (alphas of 0.00385 and 0.003916), 120 ? nickel rtds and 10 ? copper rtds. software is used to configure the 6b13 and 6b13hv modules for address, input range, baud rate, data format, checksum status and integration time. all programmable parameters are stored in the nonvolatile memory of the module. rtd sensor excitation current of 250 ua (2.25 ma for copper rtds) is supplied by a tracking pair of current sources. the resulting analog input signal is conditioned and scaled by a programmable-gain amplifier and digitized by a 16-bit integrating converter under microprocessor control. the digitized value is passed serially across a magnetically isolated barrier (1500 v rms C model 6b12; 2500 v rms C model 6b13hv) and clocked in by a custom controller chip. the on- board microprocessor then converts the data into engineering units or as a percentage of full scale, as determined by the channel parameters. in between conversions, the microprocessor auto zeros the offset and gain by monitoring the on-board temperature and compensating for reference drift. the 6b13 and 6b13hv use compensation factors to ensure the highest accuracy possible. . . figure 2
6b13 / 6b13hv rev. 0 | page 3 of 8 models 6b13 and 6b13hv range description (software configurable) accuracy (typical) error (maximum) noise (peak-to-peak) pt, -100c to +100c, = 0.00385 0.02c 0.15c 0.03c pt, 0c to +100c, = 0.00385 0.03c 0.15c 0.04c pt, -100c to +200c, = 0.00385 0.03c 0.15c 0.04c pt, -100c to +600c, = 0.00385 0.05c 0.15c 0.05c pt, -100c to +100c, = 0.003916 0.03c 0.15c 0.03c pt, 0c to +100c, = 0.003916 0.05c 0.15c 0.03c pt, 0c to +200c, = 0.003916 0.03c 0.15c 0.04c pt, 0c to +600c, = 0.003916 0.04c 0.15c 0.05c ni, -80c to +100c 0.05c 0.15c 0.02c ni, 0c to +100c 0.03c 0.15c 0.02c cu, (0 c @ +25c), 0c to +120c 0.13c 1.4c 0.04c cu, (10 c @ +25c), 0c to +120c 0.11c 1.4c 0.04c 6b13 and 6b13hv specifications (typical @ +25c and v s = +5 v dc) description model 6b13 and 6b13hv inputs, software selectable rtd types platinum, 100 ? , = 0.00385 or 0.003916 nickel, 120 ? copper, 10 ? temperature ranges refer to model table communications protocol rs-485 baud rates, software selectable 300 k, 600 k, 1.2 k, 2.4 k, 9.6 k, 19.2 k accuracy initial @ +25c refer to model table input offset vs. temperature 0.005c/c 1 span vs. temperature 0.005c/c 1 sensor excitation current 100 ? pt; 120 ? ni 0.25 ma 10 ? cu 2.25 ma lead wire resistance, each lead 10 ? maximum lead resistance effect 100 ? pt; 120 ? ni 0.0007c/ ? 10 ? cu 0.01c/ ?
6b13 / 6b13hv rev. 0 | page 4 of 8 bandwidth, -3 db 4 hz conversion rate 9 samples/second common-mode voltage (cmv) input-to-output and power model 6b13 1500 v rms, continuous model 6b13hv 2500 v rms, continuous common mode rejection (cmr) 1 k ? source imbalance @ 50/60 hz 160 db normal mode rejection (nmr) 1 k ? source imbalance @ 50/60 hz 56 db input protection 240 v dc, continuous input transient protection ansi/ieee c376.90.1-1989 power supply voltage, operating +5 v dc 5% voltage, maximum safe limit +6.5 v dc current +100 ma mechanical dimensions 2.3" x 3.1" x 0.79" (58.4 mm x 78.7 mm x 19.1 mm) environmental temperature range rated performance -25c to +85c operating -25c to +85c storage -40c to +85c relative humidity, 24 hours 0 to 95% @ +60c non-condensing 1 combined effect of zero drift and span drift. specifications subject to change without notice.
6b13 / 6b13hv rev. 0 | page 5 of 8 pin configurations and functional descriptions figure 3 . model 6b series module, with pin-out assignments. table 1. pin function descriptions pin no. description 1 n/c 2 hi 3 lo 4 n/c figure 4 6b13 & 6b13hv input field connections 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 discha rge without detection. although this product features proprietary esd protection circuitry, permanent damage may occur on devi ces subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
6b13 / 6b13hv rev. 0 | page 6 of 8 outline dimensions figure 5. outline dimensions
6b13 / 6b13hv rev. 0 | page 7 of 8 notes
6b13 / 6b13hv rev. 0 | page 8 of 8 notes ? 2004 analog devices, inc. all rights reserved. trademarks and registered trademarks are the proper ty of their respective companies. d05165-0-9/04(0)
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