Product Details
The Yokogawa NM6*D, also cataloged as the NM6 Power Supply Module, operates as a dedicated hardware component for primary DC power regulation and backplane bus distribution within Yokogawa CENTUM DCS racks. The unit converts incoming power sources into regulated DC voltages, feeding power directly to controller cards and I/O subrack buses.
Suffix Breakdown & Model Matrix
| Code Element | Specification / Description |
|---|---|
| NM6 | Base model designation for power supply module series |
| *D | Style code Revision D indicating circuit board layout, heat sink footprint, and internal protection revisions |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NM6*D |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg |
| Dimensions | 300 mm x 150 mm x 70 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Internal dissipation / regulated power delivery |
| Protection Circuits | Overcurrent, overvoltage, short-circuit protection |
| Category | Power Supply Module / Power Regulator |
| Output Function | Regulated backplane DC voltage distribution |
Channel-to-Channel Isolation and DCS Power Regulation
The NM6*D power supply module provides regulated DC power output while filtering line transients and switching noise across the subrack. Galvanic isolation barriers decouple input power connections from backplane logic rails, protecting downstream analog and digital I/O cards—including 4-20 mA HART loop protocol field interfaces—from overvoltage events. Built-in overcurrent and short-circuit protection circuits clamp output voltage during fault conditions, preventing power disturbances from propagating to central processor modules.
Frequently Asked Questions
Q: How does the NM6*D respond to output short-circuit conditions?
A: The module activates integrated short-circuit protection circuitry, clamping or shutting down output rail voltage to prevent physical damage to connected backplane circuits until the fault is removed.
Q: What grounding procedure is required to minimize output switching noise?
A: Ground the module chassis frame directly to the main cabinet functional earth (FE) bus bar using low-impedance copper conductors to optimize noise filtering and transient suppression.
Q: Is the NM6*D module hot-swappable in a live control rack?
A: Hot-swapping is permitted only in dual-redundant power configurations where the secondary parallel power supply module actively supports the entire backplane current load.
Field Installation Guidelines
- Chassis Alignment: Slide the NM6*D module into the designated power slot of the CENTUM rack chassis, ensuring guide rails align properly before seating the rear backplane connectors.
- Fastener Engagement: Tighten top and bottom retaining screws to secure the 300 mm x 150 mm x 70 mm chassis against industrial vibration.
- Wiring & Isolation: Separate primary input power lines from low-voltage field communication cabling in wire ducts to prevent electromagnetic noise coupling.
- Thermal Clearance: Maintain clear ventilation channels above and below the module assembly to allow heat sink dissipation and keep ambient operating temperatures within 0 to 55 deg C.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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