LMU 210 Series | Load Monitoring Units
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Catalog excerpts

LMU 210 Series | Load Monitoring Units - 1

LOAD MONITORING UNITS MAGTROL's LMU - Load Monitoring Units are signal conditioners for strain gauge sensor applications. They provide the excitation voltage, amplify the output signal, and incorporate overload protection. The LMU 210 Series are specifically designed to work with MAGTROL's Load Measuring Pins. The LMU 209 is versatile and designed for conditioning and interfacing low amplitude signals to industrial programmable logic controllers (PLC). The LMU conditioners can easily be connected to the GAD Series and AN Series signal displays. FEATURES ▪ For use with full-bridge strain gauge transducers (sensitivity 0.5 to 4 mV / V) ▪ Voltage input for load summation or for individual use (without sensor) ▪ 2 to 4 level detectors with relay output contacts ▪ 0 - 20 mA or 4 - 20 mA DC current output ▪ ± 10 V voltage output(s) ▪ Provides continuous detection of signal line failure and short circuits («OK» signals) ▪ Includes integrated test equipment (B.I.T.E.) with continuous power supply monitoring Fig. 1: LMU 217 | Load Monitoring Unit ▪ Compatible to CE Standards ▪ IP 65 aluminum housing FEATURES OF LMU 216 ONLY: ▪ 4 level detectors with output contacts, 2 of them with programmable memory ▪ 4 voltage inputs with summation ▪ TARE function ▪ Optional balancing and comparator sub-module DESCRIPTION The Magtrol Load Monitoring Unit is specially designed for strain gauge transducer applications. Specifically developed for use with Magtrol load measuring pins and load-forceweight sensors, the LMU Series provides excitation current and amplifies the output signal of full-bridge strain gauges. Load Monitoring Units are flexible and fully configurable due to DIP-switches and jumpers which allow the unit to be easily installed - no solder connections are required. The level detectors and the outputs can be dedicated either to the full-bridge input, to the voltage input, or to the sum of both (see "Application Selection" at the top of page 4). A built-in auto-diagnostic system detects any short circuits or signal line failures, thus allowing the system to be used in applications where safety is important. If a problem is detected, both relays are deactivated and the output voltage (respective current) changes to > 10 V DC and > 20 mA. The LMU is fully compatible with European Community (CE) standards. Its IP  aluminum housing allows the system to 65 be used in harsh environments. Using SMD (surface mounted device) technology, the LMU allows the maximum performance/ price ratio for strain gauge transducer monitoring. © 2020 MAGTROL | Due to continual product development, Magtrol reserves the ri

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LMU 210 Series | Load Monitoring Units - 2

LMU 210 SERIES MODELS COMPARISON MODEL Technology Voltage Output Current Output Relays Summation Weight SYSTEM CONFIGURATION The LMU Load Monitoring Unit offers many configuration possibilities. As it is not possible to describe all of them and in order for our solution to be perfectly configured to your needs, we recommend that you contact our technical sales advisers. LB & LE Series Load measuring pin SK-02 Series Cable force transducer AN Series Load monitor display PROG LMU Series Load monitor unit DATA ENTER GAD Series Large Digital Display MB-02 Series Miniature Load Pin MD-01 Series...

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LMU 210 Series | Load Monitoring Units - 3

LMU 210 SERIES SPECIFICATIONS INPUT CHARACTERISTICS Voltage Output Power Supply Max. Dynamics ▪ 115 - 230 V AC & 20 - 32 V DC jumper selectable ▪ 48 V AC fixed Fuse rating Max. Load Output Impedance Output for Auto-diagnostic Feature (OK O/P) Type Open collector TRANSFER CHARACTERISTICS Voltage Transfer Ranges (ΔUI/P / ΔUO/P) Range Bridge signal Supply Voltage Max. Dynamic Component of Bridge Signal Max. Common Mode Voltage on Input Input Impedance Voltage Transfert (gain) Adjustement Range Range Selection Max. Input Signal (dynamic) Signal Division by 2 Jumper selectable Input for...

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LMU 210 Series | Load Monitoring Units - 4

LMU 210 SERIES TRANSFER CHARACTERISTICS (Continues) ENVIRONMENTAL CHARACTERISTICS Switching Delay Operating Temperature Storage Temperature Delay Adjustment Range 0.01 to 4.25 seconds (adjustment for every relay by multiturn potentiometer) Application selection A = bride signal; B = voltage input B.I.T.E. test signal (Built In Test Equipment) Load simulation on request (calibrated during the installation) Logic signal, active low, CMOS/TTL compatible Reliability MTBF Stuffing glands SAFETY CHARACTERISTICS Signal type MECHANICAL CHARACTERISTICS Output specific application: REL1 det....

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LMU 210 Series | Load Monitoring Units - 5

LMU SERIES LOAD MONITORING UNIT Stuffing glands: ø cable: 5-12 mm Stuffing glands (max. PG 11): ø cable: 5-12 mm LMU SERIES LOAD MONITORING UNIT Sealed diecast aluminum box 287 NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. © 2020 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.

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LMU 210 Series | Load Monitoring Units - 6

LMU 210 SERIES ORDERING INFORMATION ORDERING NUMBER a) According to application and MAGTROL configuration and calibration protocol Example: LMU  Series Monitoring Unit, model 210  212, supply 230  AC, without balancV  ing option and with calibration would be ordered as follows: LMU 212/011C LMU  Series Monitoring Unit, model 201  216, supply 48 V AC, with balancing option and no calibration would be ordered as follows: LMU 216/461 11 : No balancing comparator option 61 : Balancing comparator option (only for LMU 216) Blank : No configuration & calibration (standard) C : Configuration &...

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