Order now the 20-750-2262D-2R, a specialized I/O option module engineered for the Allen-Bradley PowerFlex 750-Series variable frequency drives. This module provides a flexible interface for drive-level control, integrating digital inputs and relay outputs into a single, reliable hardware unit.
What Is the 20-750-2262D-2R?
The 20-750-2262D-2R is a plug-in I/O module designed to expand the local control capabilities of PowerFlex 753 and 755 drives. The «D» in the part number signifies that the digital inputs are specifically designed for 24V DC logic, while the «2R» indicates the presence of two high-quality Form C relay outputs. This module is essential for applications where the drive must directly manage peripheral equipment, such as mechanical brakes, cooling fans, or safety interlocks, without the latency of a central PLC. By placing these control points directly on the drive’s internal bus, the 20-750-2262D-2R allows for sub-millisecond response times to field-side events. This architecture is particularly useful in decentralized control schemes where each drive operates as a semi-autonomous node in a larger automation system.
Key Technical Specifications
- Digital Inputs: 2 (24V DC, Sinking/Sourcing)
- Relay Outputs: 2 (Form C – Normally Open and Normally Closed)
- Analog Inputs: 1 (Isolated, +/-10V or 0-20mA)
- Analog Outputs: 1 (Isolated, +/-10V or 0-20mA)
- Input Current: 5mA per channel
- Relay Rating: 2A max @ 240V AC / 30V DC
- Compatibility: All PowerFlex 750-Series Frame Sizes
- Isolation: Full isolation between analog and digital sections
Drive Integration and DeviceLogix
The 20-750-2262D-2R is fully compatible with Rockwell Automation’s DeviceLogix technology. This allows users to program simple logic blocks within the drive itself using the I/O provided by this module. For example, a «ready-to-run» signal can be interlocked with a local flow switch via the digital inputs, while the relay outputs can trigger a fault alarm. This functionality reduces the programming burden on the main PLC and ensures that critical safety or process interlocks remain active even if network communication is lost. The module installs easily into any available option slot (4 through 8), and the drive automatically populates the corresponding parameters in the firmware.
Installation Advice
Before installing the 20-750-2262D-2R, ensure that the drive’s power is completely disconnected and the bus voltage has dissipated. When wiring the relay outputs, always use a suppression device (like an RC snubber for AC or a diode for DC) when switching inductive loads to prevent electrical noise from interfering with the module’s analog signals. Ensure that the 24V DC digital input common is properly tied to the field power supply common to prevent floating signals that could cause erratic drive behavior.
Frequently Asked Questions
Q: Can the analog input on this module be used for a 4-20mA speed reference?
A: Yes, the analog channel is fully configurable for either voltage (+/-10V) or current (0-20mA/4-20mA) signals via the drive’s internal parameters.
Q: Does this module support hot-swapping?
A: No, the 20-750-2262D-2R should only be installed or removed when the PowerFlex drive is completely powered down to prevent damage to the DPI backplane.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here: https://atlantechdrives.com/manufacturers/allen-bradley/
