GE / IP FANUC Series 90/30 In Stock

Call Now




Rated 4.7/5 Based on 13 ratings.

Rate your purchase of the 1771-OJ

Allen Bradley | PLC-5 | 1771-OJ | Image

Allen Bradley | PLC-5 | 1771-OJ | Image Allen Bradley | PLC-5 | 1771-OJ - Wiring Diagram Image

SKU 2178029  UPC 0799705797208

Allen Bradley products are now sold by our affiliate company

Notice: By clicking this link, you will be redirected away from to

The 1771-OJ is a Pulse Output Expander Module from Allen Bradley. It forms an integral part of the stepper positioning assembly which also houses the 1771-M1 Stepper Controller Module and a single 1771-WB field wiring arm. A single 1771-OJ module is capable of powering one stepper motor axis although the number of axis per I/O chassis can be expanded up to a maximum of three axis by installing a 3 Pulse Output Expander Module in the I/O chassis. The 1771-OJ occupies one slot in the 1771 I/O chassis except the leftmost slot which is assigned to the processor. The 1771-OJ module meets the Electromagnetic Compatibility standards specified in the 89/336/EEC Council directive, and it also complies with the Generic Emission and Immunity Standards. Three 1771-OJ modules can be controlled by one stepper positioning assembly. The 1771-OJ uses switches to control stops and jogs. Note that the jog switch can only be operated when the axis (corresponding) is not operating and the stop switch will instantly block output pulses from reaching the corresponding axis. The module draws a current of 800 milliamperes from the backplane at a voltage of 5 Volts DC.

A fault in the 1771-OJ module is indicated by the ACTIVE, EXPANDER COMM FAULT, and the MODULE FAULT LED indicators on the Stepper Positioning Assembly. The module accepts low true inputs which are received from the stepper translator that is supplied by the user. The 1771-OJ Pulse Output Expander Module must be supplied with an extra power source to power the switch inputs and the pulse outputs that are fed to the stepper translator and motor. The extra power source must fall under NEC Class 2 specifications. The pulse outputs for the output expander module are converted to the required current/voltage by the stepper translator and power supply. The converted information is used to precisely control the stepper motor. When repairing or installing the 1771-OJ module, disconnect power to the Stepper Positioning assembly. Use Pins 2 to 4, 8 to 10, to key the module to the backplane.

PDF Electric & Supply Inc. sells new, new surplus and refurbished products which are sourced through independent channels. All warranties and support, if applicable, are with PDF Electric & Supply Inc. and not the manufacturer. PDF Electric & Supply Inc. is not an authorized distributor or representative for the listed manufacturers and makes no representations as to any quality control performed by any listed manufacturer on the products. The products listed on this website may vary as to their country of origin; the accessories, and other items included with the product; and the language used on the packaging, the parts, and any related instructions or printed material related to the products. This website is not sanctioned or approved by any manufacturer or tradename listed. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.