DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty
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.
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.
DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty
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.
Warranty: | 1 year DO Supply Warranty Included |
Shipping: | Worldwide shipping via UPS, DHL, and TNT |
Repairs: | We offer repair service for the 1785-LT4. |
Exchange: | Exchange credit for your defective unit available. |
Conditions: | We sell preowned surplus and refurbished parts. |
Manufacturer | Rockwell Automation |
Brand | Allen-Bradley |
Part Number/Catalog No. | 1785-LT4 |
Module Type | Processor |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
Analog I/O | 256 |
DH+ Channel | Yes |
Remote I/O Channel | Yes |
Number of Words | 6 Kilowords SRAM |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
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 |
RS-232-C/422-A/423- A Ports | 1 |
Control Coprocessor Expansion Port | Yes |
Manufacturer | Rockwell Automation |
Brand | Allen-Bradley |
Part Number/Catalog No. | 1785-LT4 |
Module Type | Processor |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
Analog I/O | 256 |
DH+ Channel | Yes |
Remote I/O Channel | Yes |
Number of Words | 6 Kilowords SRAM |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
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 |
RS-232-C/422-A/423- A Ports | 1 |
Control Coprocessor Expansion Port | Yes |
The Allen-Bradley 1785-LT4 is one version of the Classic 1785 PLC-5 Programmable Controller modules. The maximum analog I/O of this module is 512 and the program scan time is 2 ms (discrete logic) and 8 ms (typical). To optimize this scan time, divide the I/O rack between multiple channels. Place the most critical I/O on a single channel, and turn off the I/O on other channels. Because all I/O channels are independent, the remote I/O scan on one channel will not affect remote I/O scan on other channels. The Allen-Bradley 1785-LT4 has 1 DH+ port, the remote I/O transmission rate is 57.6 kbps, and the maximum user memory is 6K words.
The Allen-Bradley 1785-LT4 is regarded as Industrial Equipment Class 1, Class A in accordance with Publication IEC/CISPR 11. Without appropriate precautions, there may be difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances. The operating temperature of this module is from -25-60 °C (-13-140 °F). The nonoperating temperature of this module is from -40-85 °C (-40-185 °F). The relative humidity of the 1785-LT4 is from 5-95% without condensation. The operating vibration of this module is 2 g at 10-500 Hz. The Allen-Bradley 1785-LT4 has an operating shock of 30 g (3 pulses, 11 ms). The nonoperating shock of this module is 50 g (3 pulses, 11 ms). The 1785-LT4 has an ESD immunity of 4 kV contact discharges and 8 kV air discharges.
Type | Lead Time | Price | Action |
---|---|---|---|
Repair Service | 2-4 weeks | $176 | ![]() |
Our highly skilled technicians can repair your 1785-LT4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.
Please refer to the manual for more information about the 1785-LT4 such as the wiring diagrams, data sheets and migration or obsolescence details.
Revision Part # | Also Known as | Availability |
1785-LT4 Ser A
|
1785-LT4/A, Series A, Rev A | Request Quote |
Size | |
Input Type | |
Panel Cutout Height | in mm |
Panel Cutout Width | in mm |
Terminal Height | in mm |
Terminal Width | in mm |
Terminal Overall Depth | in mm |
Terminal Mounted Depth | in mm |
Manufacturer | Rockwell Automation |
Brand | Allen-Bradley |
Part Number/Catalog No. | 1785-LT4 |
Module Type | Processor |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
Analog I/O | 256 |
DH+ Channel | Yes |
Remote I/O Channel | Yes |
Number of Words | 6 Kilowords SRAM |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
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 |
RS-232-C/422-A/423- A Ports | 1 |
Control Coprocessor Expansion Port | Yes |
Manufacturer | Rockwell Automation |
Brand | Allen-Bradley |
Part Number/Catalog No. | 1785-LT4 |
Module Type | Processor |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
Analog I/O | 256 |
DH+ Channel | Yes |
Remote I/O Channel | Yes |
Number of Words | 6 Kilowords SRAM |
Backplane Requirement | 2.5 Amperes at 5 Volts DC |
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 |
RS-232-C/422-A/423- A Ports | 1 |
Control Coprocessor Expansion Port | Yes |
The Allen-Bradley 1785-LT4 is one version of the Classic 1785 PLC-5 Programmable Controller modules. The maximum analog I/O of this module is 512 and the program scan time is 2 ms (discrete logic) and 8 ms (typical). To optimize this scan time, divide the I/O rack between multiple channels. Place the most critical I/O on a single channel, and turn off the I/O on other channels. Because all I/O channels are independent, the remote I/O scan on one channel will not affect remote I/O scan on other channels. The Allen-Bradley 1785-LT4 has 1 DH+ port, the remote I/O transmission rate is 57.6 kbps, and the maximum user memory is 6K words.
The Allen-Bradley 1785-LT4 is regarded as Industrial Equipment Class 1, Class A in accordance with Publication IEC/CISPR 11. Without appropriate precautions, there may be difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances. The operating temperature of this module is from -25-60 °C (-13-140 °F). The nonoperating temperature of this module is from -40-85 °C (-40-185 °F). The relative humidity of the 1785-LT4 is from 5-95% without condensation. The operating vibration of this module is 2 g at 10-500 Hz. The Allen-Bradley 1785-LT4 has an operating shock of 30 g (3 pulses, 11 ms). The nonoperating shock of this module is 50 g (3 pulses, 11 ms). The 1785-LT4 has an ESD immunity of 4 kV contact discharges and 8 kV air discharges.
Type | Lead Time | Price | Action |
---|---|---|---|
Repair Service | 2-4 weeks | $176 | ![]() |
Our highly skilled technicians can repair your 1785-LT4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.
Type | Lead Time | Price | Action |
---|---|---|---|
Repair Service | 2-4 weeks | $176 | ![]() |
Our highly skilled technicians can repair your 1785-LT4. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.
Please refer to the manual for more information about the 1785-LT4 such as the wiring diagrams, data sheets and migration or obsolescence details.
Revision Part # | Also Known as | Availability |
1785-LT4 Ser A
|
1785-LT4/A, Series A, Rev A | Request Quote |