1785-MJ Memory Module Allen-Bradley

Description

1785-MJ is a memory module by Allen-Bradley, designed for use with various PLC-5 processors. It provides reliable program backup with a memory size of 8K Words and is compatible with multiple Allen-Bradley PLC processors.

Specifications

• Memory Size: 8K Words

• Number of Words: 6 Kilowords SRAM

• Type: EEPROM

• Write Protection: Removable jumper

• Function: Program Backup

• Backplane Requirement: 2.5 Amperes at 5 Volts DC

Compatibility

• Compatible Processors:

• 1772-LW (PLC-2/17)

• 1772-LWP (PLC-2/17)

• 1785-LT (PLC-5/10)

• 1785-LT2 (PLC-5/12)

• 1785-LT3 (PLC-5/15)

• 1785-LT4 (PLC-5/25)

Environmental Conditions

• Operating Temperature: 0° to 60° C (32° to 140° F)

• Storage Temperature: -40° to 85° C (-40° to 185° F)

• Relative Humidity: 5 to 95% (without condensation)

Physical Dimensions

• Size (Inches): 2.18L x 1.73H x 0.69D

• Size (Millimeters): 55.4L x 43.9H x 17.4D

Connectivity

• RS-232-C/422-A/423-A Ports: 1

Performance

• Max Analog I/O: 3072

• I/O Scan Time Per Rack:

• 10 ms at 57.6 kbits/s

• 7 ms at 115.2 kbits/s

• 3 ms at 230.4 mbits/s

• Max I/O Chassis Total: 93

• Max I/O Chassis Extended Local: 0

• Max I/O Chassis Universal Remote: 32 Max. Per I/O Link