Description
The Yokogawa PW501 is a dedicated power supply unit designed specifically to power optical bus repeater component units (such as the YNT5xx series) within Yokogawa CENTUM CS, CS3000, and related legacy distributed control system (DCS) architectures. It delivers stable, regulated DC operating power to maintain continuous communication across extended optical bus networks.
Technical Specifications
| Parameter | Value |
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Power Supply Unit (for Optical Bus Repeater Components) |
| Input Voltage Range | 100 to 120 V AC |
| Output Voltage | 24 V DC |
| Maximum Output Current | 1 A |
| System Compatibility | CENTUM CS, CENTUM CS 3000 / Optical Bus Repeater Units |
| Operating Temperature | 0 to +50°C (verify with OEM datasheet for exact cabinet constraints) |
| Enclosure Protection | IP20 (intended for internal cabinet mounting) |
| Weight | Approx. 1,000 g |
Availability and Commercial Terms
- Condition: New Original (Factory Sealed), New Surplus, or Refurbished (fully tested)
- Lead Time: 1 to 3 business days for stock items; 2 to 4 weeks for specialized surplus sourcing
- Warranty: 12-month standard replacement warranty from date of shipment
- Pricing Note: Listed price is indicative, not final. Price subject to market conditions; contact us for a firm quote.
Engineering and Integration Notes
In field deployments of distributed control systems utilizing optical data transmission, reliable power infrastructure for repeater nodes is critical to prevent packet loss or link drops.
- Input Regulation: The unit accepts a nominal 100 to 120 V AC source. Ensure incoming facility power is stable and properly fused upstream to protect the internal regulation components.
- Load Management: Rated at a maximum output current of 1 A, verify that the total current draw of the connected optical bus repeater modules does not exceed this threshold to prevent thermal overload or voltage sagging.
- Cabinet Placement: Mount the unit with adequate clearance above and below to allow natural convection cooling inside the marshalling or node cabinet.
Frequently Asked Questions
What specific hardware does the PW501 power?
The PW501 is engineered primarily to supply operating power to optical bus repeater component units (such as YNT series hardware) used in Yokogawa CENTUM control architectures. It is not designed to serve as a main node processor or I/O rack bulk power supply.
Can the input voltage handle 220 V AC sources?
No. The standard PW501 model is rated for an input range of 100 to 120 V AC. Applying 220–240 V AC directly without a step-down control transformer will cause catastrophic failure of the internal power circuit. Verify your cabinet’s auxiliary distribution voltage before installation.
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