Allen Bradley 1785-L20B
The Allen-Bradley 1785-L20B is an Allen-Bradley PLC5 Controller. This controller has 16K words of user memory, supports 512 (any mix) or 512 in + 512 out (complementary). It has embedded communication ports such as One (1) DH+ (Fixed), One (1) DH+,Remote I,O (Adapter or Scanner) One (1) serial port, configurable for RS-232 and 423 and RS-422A standards.
This Allen Bradley 1785-L20B is supplied brand new by PartLogic for machine control, process automation, industrial communication, equipment maintenance and replacement applications. It forms part of our Industrial automation > Plc controllers > Cpu > Plc 5 range and is referenced internally as PartLogic SKU PL26941343434.
Before ordering, please confirm the manufacturer part number, product specifications and compatibility with your existing equipment. If you are replacing a failed, obsolete or hard-to-find part, contact PartLogic and we can help check suitability or source related components.
| Manufacturer | Allen Bradley |
| Product Type | Programmable Logic Controller |
| Product Line | PLC 5 |
| Part Number | 1785-L20B |
| UPC | 612598123971 |
| Weight | 2.75 lbs (1.25 kg) |
| Non-Operating Temperature | IEC 60068-2-1 (Test Ab, Un-packaged Nonoperating Cold), IEC 60068-2-2 (Test Bc, Un-packaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Un- packaged Nonoperating Thermal Shock): –40...85 o C (– 40...185 o F) |
| Operating Temperature | EC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0...60 o C (32...140 o F) |
| Remote I/O | 12 chassis |
| Maximum Number of I/O Racks | 4 (0-3) |
| Battery | 1770-XYC |
| Memory | 16 Kwords |
| Embedded Communication interfaces | 1 DH+ (Fixed) 1 DH+/Remote I/O (Adapter or Scanner) 1 serial port, configurable for RS-232 and 423 and RS-422A standards |
| Backplane current load | 2.3 A |
| Power Dissipation | 12 W |
| Power Supply | 1771-P4S, -P6S, -P4S1, -P6S1 |
| Module Type | Standard Processor |
| Processor | PLC-5/20 |
| Max User Memory Words | 16 Kilowords |
| Battery-Backed Static RAM | Yes |
| EEPROM Program Backup Option (using 1785-ME16, -ME32, -ME64, and -M100) | Yes |
| Protected Memory | No |
| Max Total I/O | 512 (any mix) or 512 in + 512 out (complementary) |
| Max Analog I/O | 512 |
| 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 Extended Local | 0 |
| Max I/O Chassis Total | 13 |
| Max I/O Chassis Universal Remote | 12 |
| RS-232-C/422-A/423- A Ports | 1 |
| Control Coprocessor Expansion Port | Yes |
| Brand | Allen Bradley |
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