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Allen Bradley PLC 5 1771-OJC
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1771-OJC

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Allen Bradley PLC 5 Pulse Output Expander Module, 5-30 Volt DC Digital Inputs for Jogging and E-Stop, 20 Kilohertz Output to Translator Source/Sink Push-Pull, 0.80 Amperes Backplane Current, Earlier Model

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Technical specifications for 1771-OJC

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1771-OJC
Module TypePulse Output Expander Module
Inputs5-30 Volt DC Digital Inputs for Jogging and E-Stop
Max Input FrequencyN/A
Outputs20 Kilohertz Output to Translator Source/Sink Push-Pull
Slots1 Per OJ
Module Update Period2.4-3.1 ms
Backplane Current0.80 Amperes
Wiring Arm1771-WH
Model StatusEarlier Model
CoatingConformal Coat
Typical AC Signal Delay (Off)45 (+/- 15) ms
Typical DC Signal Delay (Off)50 ms
MountingRack Mountable
Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

The 1771-OJC PLC 5 Pulse Output Expander Module is an essential electrical component of the 1771-QA Stepper Motor Positioning Assembly which functions by allowing programmable control of a steppe motor of a PC and consequently allows for modular expansion from a single to a 3-axis setup per I/O chassis. The 1771-OJC requires an 800 milliampere current at 5V DC from the backplane and employs 5-30V DC at 340mA (max) rated auxiliary power source with a peak-to-peak ripple value less than the factory specification for the stepper translator. The 1771-OJC has the E-STOP and the JUG input modes with 120ms signal (input) delay time between 1 and 3 axes in JUG mod, and 250ms signal delay time for the E-STOP mode. The 1771-OJC’s voltage ranges between 1.0V DC (high state) and 0.8V DC (low state) and it comes with an internal pull-resistor (1.6 Kilo Ohms) which makes it compatible with most Open Collector Logic Devices. The module has an ON-state current of 2.3mA at 5.0V DC and 18.6mA at 30V DC and its output voltage ranges between -2.6V DC (-4.2 in the worst case) and +.7V DC (1.0V DC in the worst case) at 100mA maximum output current. The 1771-OJC’s worst-case signal rise and fall lasts for 0.6 microseconds at 100mA and it has a 50% duty cycle pulse. It requires a wiring arm with a wiring screw torque of 9 pound-inches and its circuitry uses Belden 8771 wire with a 40-foot maximum range. It is keyed to the backplane by connecting its connector band between pins 8 and 10 and between pins 22 and 24 of the backplane top connector. The 1771-OJC has an operational temperature between 0 and 60 0C (32 and 140 0F) around 5-95% non-condensing humidity environment and it is stored between -40 and 85 0C (-40 and 185 0F).

Revision Part #Also known as
1771-OJC Ser A1771-OJC/A, Series A, Rev A
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