Description
The WHEDCO 78004654 is a high-performance industrial power supply unit designed to provide stable and regulated DC power to motion control systems, PLC racks, and drive assemblies. Engineered for precision and reliability, this module ensures that sensitive electronic components receive consistent voltage even under varying load conditions.
Product Introduction
The WHEDCO 78004654 Power Supply is a ruggedized energy conversion module typically utilized in high-speed automated machinery. As a part of the WHEDCO (now integrated into the GE/Fanuc and Kollmorgen ecosystems) motion control lineup, the 78004654 Voltage Regulator is built to withstand the electrical noise and thermal stresses found in industrial environments. It features advanced filtering and short-circuit protection to safeguard both the power unit and the downstream hardware.
WHEDCO 78004654
Technical Specifications (Datasheet)
The following parameters detail the operational limits and physical characteristics of the module:
| Parameter | Specification |
| Model Number | 78004654 |
| Input Voltage | 115 / 230 V AC (Auto-ranging or Jumper Selectable) |
| Input Frequency | 47 – 63 Hz |
| Output Voltage | +24 V DC (Regulated) |
| Output Current | 5.0 A (Continuous) |
| Efficiency | > 85% at full load |
| Protection | Overload, Over-voltage, and Thermal Shutdown |
| Mounting | DIN Rail or Panel Mount |
| Indicator | LED status for Output OK |
| Country of Origin | USA |
Usage & Installation Instructions
To ensure optimal performance and safety, follow these installation guidelines:
- Mounting: Install the power supply vertically to allow for natural convection cooling. Ensure there is at least 25mm of clearance above and below the unit for airflow.
- Wiring: Use copper conductors rated for at least 75°C. Connect the AC input to the primary terminals (L, N, G) and verify the ground connection is secure to reduce EMI.
- Output Connection: Connect the 24V DC output to the motion controller or drive bus. Ensure that the total current draw does not exceed the 5.0A continuous rating.
- Startup: Upon applying power, the green LED should illuminate. If the LED is off or flashing, check for a short circuit in the output wiring or an over-temperature condition.
Common Questions Q&A
- Q: Can this power supply be used in parallel with another unit?
- A: No, the 78004654 is not designed for direct parallel operation for current sharing unless external redundancy modules are used.
- Q: What is the significance of the 7800 series prefix?
- A: The 7800 series denotes WHEDCO’s high-reliability power family, often paired with their multi-axis motion controllers.
- Q: Does the unit require external fusing?
- A: While the unit has internal protection, an external fast-acting fuse on the AC input is recommended to meet local electrical codes.
Recommended Similar Models
For users maintaining legacy WHEDCO systems or requiring similar power profiles, consider the following models:
- WHEDCO 78004655: A higher output version designed for multi-drive systems.
- WHEDCO 78003112: A compact auxiliary power board for control logic.
- GE/Fanuc IC693PWR330: A comparable power supply used in Series 90-30 PLC systems.
- Kollmorgen PS-24-5: A modern 24V replacement module with similar footprints.
- WHEDCO 78004650: A standard-duty version with 2.5A output for single-axis applications.
