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1771-ISC

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The 1771-ISC I/O module is a specialized I/O module that is available from the Allen-Bradley PLC 5 series. It is a 1-slot module, which means that it only needs 1 chassis slot for installation. The 1771-ISC specialized I/O module has a voltage rating of 5 Volts DC and it supports rack-based module functions. This module has no outputs but it can support as many as 72 inputs. The 1771-ISC specialized I/O module has a backplane current rating of 0.8 Amps.

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Technical specifications for 1771-ISC

Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Part Number/Catalog No.	1771-ISC
Module Type	Specialized I/O Module
Number of Inputs	72 Direct Digital Inputs for up to four 4-digit BDC TW, six 3-digit BDC TW, or 72 discrete switches
Number of Outputs	N/A
Input Voltage Range	5 Volts DC (Supplied by Module)
Output Voltage Range	N/A
Slots	1 Slot
Backplane Current	0.8 Amperes
Wiring Arm	1771-WH
Module Scan Time	15.3 ms (normal) and 5.1 ms (fast)
Model Status	Earlier Model
Typical AC Signal Delay (Off)	45 (+/- 15) ms
Typical DC Signal Delay (Off)	50 ms

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.

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This 1771-ISC input module by Allen-Bradley is a multiplexer input module from the 1771 series. The input voltage range is 5V DC which is supplied by the module. The device has a single slot with a backplane current supply of 0.8A. This device works on Flex I/O modules which are cost-effective, flexible, and support distributed applications. This device also supports all those functions of larger I/O modules that are rack-based and require no extra or separate placement arrangements. This 1771-ISC module also selects the termination and network which would be appropriate for the specific module. This 1771-ISC needs to be set perfectly in the required mode of operation to match the conditions with which the module will operate. Depending on the kind of switches are connected to it the module selects and operates accordingly. No matter where the module is placed, the device will be automatically programmed after the data transfer. You can select the modes by switching the On/Off switches as required. The typical module scan time for this device is 15.3ms for normal mode and 5.1ms in fast mode. The typical AC signal delay ranges to 45ms (+/-) in off status and the typical DC signal delay ranges to 50ms.