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Part Number/Catalog No.
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1756-L1
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Module Type
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Processor Module
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User Memory
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64 KB
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Isolation Voltage
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30 Volts Continuous
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Communication Port
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One (1) RS232
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Operating Temperature
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32-140 Fahrenheit (0-60 Celsius)
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Compatible Memory Modules
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1756-M1, 1756-M2 and 1756-M3
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Minimum Operating Current
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2 milliamps at 10 Volts DC
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Battery Back-Up
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1756-BA1; 1756-BA2
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Maximum Operating Current
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3.5 milliamps at 30 Volts DC
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Communication Cable
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1756-CP3
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Maximum Input Current, Off-State
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1.5 milliamps
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Enclosure
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Open
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Power Dissipation (Max)
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4.1 Watts at 60 degrees Celsius
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SLot Width
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One (1)
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Backplane Current at 5 Volts
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120 milliamps
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Backplane Current at 24 Volts
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2 milliamps
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Removeable Terminal Block(s)
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1756-TBCH, 1756-TBS6H
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The 1756-L1 is a versatile 5550 controller designed for industrial automation. It supports up to 250 connections and has a compact weight of 0.28 kilograms (10.0 ounces). This controller includes 64 kilobytes of user memory and can be installed directly into any available slot in a chassis. Multiple controllers can be placed in different slots within the same chassis, where they can communicate across the backplane or operate independently. The 1756-L1 is capable of communication over DeviceNet, RS-232-C (DF1/DH-485 protocols), ControlNet, DH+, and EtherNet/IP networks. However, it does not feature nonvolatile memory.
This controller requires a peak backplane current of 0.65 Amps at 5 Volts DC and 0.02 Amps at 24 Volts DC. It dissipates power at an average rate of 3.3 Watts, with a thermal dissipation of 11.3 BTU/hour. The 1756-L1 operates effectively within a temperature range of 0 to 60 degrees Celsius and can be stored between -40 and 85 degrees Celsius. It maintains functionality in a noncondensing relative humidity range of 5% to 95%.
The unit is robust, with a storage shock capacity of 50 G peak for 11 milliseconds and an operating shock capacity of 30 G peak for 11 milliseconds. Additionally, it withstands vibrations between 10 to 500 Hertz with a peak acceleration of 2.0 G. For battery replacements, the controller is compatible with the 1756-BA1 lithium battery, weighing 0.59 grams. The programming cables suited for this device are the category 3 serial cables, models 1756-CP3 and 1747-CP3.
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