1606-XL240DR Switched Mode Power Supply | Allen Bradley

Configured for industrial power distribution in control panel environments, the Allen Bradley 1606-XL240DR (1606-XL240DR Power Supply Module) provides direct physical and electrical execution of 24 VDC output conversion for auxiliary circuit requirements.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

The 1606-XL240DR power supply module facilitates voltage regulation within industrial control architectures. While the unit operates primarily as a power conversion device, its output stability directly influences the backplane bus communication velocity of connected PLC and I/O modules by ensuring a clean voltage rail. The unit features an adjustable output voltage, allowing for I/O density scaling adjustments when compensating for voltage drop across long distribution runs. Firmware flash compatibility is not required for this power supply, as it functions as a hardware-level voltage regulator. Deterministic system uptime is monitored via the integrated DC-OK signal contact, which provides status feedback to the host controller's digital input module.

Frequently Asked Questions

Q: Can multiple units be connected in parallel for current sharing?

A: Yes, the unit supports parallel operation to increase total output current capacity. Ensure that the output voltages of all paralleled units are matched within a tolerance of 50 mV to prevent load imbalance and thermal stress.

Q: What is the function of the DC-OK contact?

A: The DC-OK signal is a relay output that transitions to a closed state when the output voltage is within the nominal operating range. It serves as a diagnostic indicator for the host control system to detect power supply failure or undervoltage conditions.

Field Installation Guidelines

1. Mounting: Install the unit on a 35 mm DIN rail in a vertical orientation. Ensure a minimum clearance of 50 mm above and below the unit to allow for convective airflow and thermal dissipation.
2. Wiring: Use copper conductors rated for at least 75 deg C. Ensure the wire gauge is sufficient to handle the 30 A continuous current load without excessive voltage drop.
3. Grounding: Connect the chassis ground terminal to the main electrical panel ground bus using a low-impedance connection to comply with electrical safety standards and reduce EMI.
4. Voltage Adjustment: Use the front-mounted potentiometer to fine-tune the output voltage to the required level, measuring at the load end to account for cable losses.
5. Circuit Protection: Install an appropriately rated input branch circuit breaker or fuse to protect the supply against short-circuit currents and overload conditions.