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Description
Overview
Essential details：1756-RM/A ControlLogix enhanced redundancy module Allen Bradley
The Allen-Bradley 1756-RM is a ControlLogix Redundancy module. This module may only be used with the ControlLogix platform to enable controller redundancy. It manages connectivity of Two (2) identical controllers, installed in an identical rack of the same components and configuration. It provides redundancy system monitoring as well as module health via the embedded LED display such as PRI, COM and OK.
The 1756-RM has been released as Series A and B. Series is basically an enhancement of the previous series however, a 1756-RM with different series can co-exist in one redundant configuration. It is highly recommended to have the same series installed to achieve maximum operability of the redundancy setup. When used with the same series of redundancy module, speed of 100 Mbps is achieved.
The 1756-RM comes with One (1) single mode LC fiber optic connector. It requires use of the 1756-RMCx redundancy cable to synchronize the operation of the redundant controller pair. This controller may be configured using the redundancy configuration tool for setting up the redundancy and Studio 5000 Logix designer for configuring the overall parameters of the module.
1756-RM/A
This module is compatible with 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 ControlLogix chassis, 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75 Standard Power supply and 1756-PA75R, 1756-PB75R, 1756-PSCA2 redundant power supply. It is a single slot module and may be installed to any available slot in the chassis. The redundant pair must have the same configuration as to the partner chassis.
The 1756-RM has a Current draw of 4 mA at 1.2VDC, 1.2 mA at 5.1VDC and 120 mA at 24VDC operation.
The 1756-RM redundancy module has a current draw of 4 milliAmps at 1.2 Volts DC, 1.2 Amps at 5.1 Volts DC, and 120 milliAmps at 24 Volts DC. The unit mounts in a chassis and it can be fitted into any slot. The 1756-RM module has a power dissipation of 9 Watts along with thermal dissipation of 31 BTU per hour. This ControlLogix comes with open enclosure and it carries the T4 temperature code. In regard to physical characteristics of the module, it weighs around 0.29 kilograms or 0.64 pounds and it has small dimensions. The 1756-RM module has an operating temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) and it can be stored within a temperature range of -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit). The unit is made in accordance with several industrial standards and it includes certifications from the CE, CSA, Ex, C-Tick, and c-UL-us standards.
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