PW481-11 Yokogawa DCS Power Supply Module

Yokogawa PW481-11 CENTUM VP Power Supply Module

Yokogawa PW481-11 CENTUM VP Power Supply Module

Availability: 20 left in stock

Yokogawa PW481-11 S2 CENTUM VP Power Supply Module The Yokogawa PW481-11 S2, also cataloged as the PW481-11 Power Supply Module,...

SKU: PW481-11

Manufacturer: Yokogawa
Product No.: PW481-11
Product Type: Distributed Control System Power Supplies
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa PW481-11 S2 CENTUM VP Power Supply Module

The Yokogawa PW481-11 S2, also cataloged as the PW481-11 Power Supply Module, operates as a dedicated hardware component for regulated DC power distribution within CENTUM VP Field Control Unit racks.

Suffix Breakdown & Model Matrix

Suffix Code	Option Code	Description / Specification Detail
-11	--	Standard AC power supply module variant (supersedes PW481-51)
Style S2	--	Revision level denoting standard environmental and physical compliance

Hardware Specifications

Parameter	Specification
Model	PW481-11 S2
Brand	Yokogawa
Origin	Japan
Weight	0.4 kg (net module), 2.0 kg (gross shipping weight)
Dimensions	120 mm x 25 mm x 130 mm
Operating Temp	0 deg C to +55 deg C
Power Consumption	Max 200 VA
Input Voltage Range	100 to 240 VAC
Input Frequency	47 to 63 Hz
Output Voltage	5 VDC / 24 VDC system distribution
Output Current	Up to 20 A
Power Capacity	100 W nominal
Isolation Resistance	>= 100 M ohm at 500 VDC
Operating Humidity	10 to 95% RH (non-condensing)
Environmental Compliance	ISA-71.04 Class G3, CE, UL Compliant

Channel Isolation & HART Loop Subsystem Protection

The power conversion topology features reinforced galvanic isolation rated for 100 M ohm at 500 VDC between line input terminals and internal logic rails. This physical barrier blocks line-borne high-voltage transients from reaching internal system backplane buses. By stabilizing internal system voltage rails under fluctuating mains conditions, the power module preserves signal integrity across field-side 4-20 mA HART loop protocol interfaces and eliminates supply-induced noise on channel-isolated analog input channels.

Frequently Asked Questions

Q: Does replacing a PW481-11 S2 module require shutting down the Field Control Unit (FCU)?

A: No. Hot-swap replacement is fully supported when the host rack is configured with dual-redundant power supplies. Removing one module does not disturb system logic execution, as the parallel PW481-11 unit carries the full internal DC current load automatically.

Q: Can the PW481-11 serve as a direct replacement for older PW481-51 modules?

A: Yes. The PW481-11 functional revision directly supersedes the PW481-51 module variant, maintaining backward mechanical and electrical pin compatibility across CENTUM VP AFV10S and AFV10D Field Control Unit chassis slots.

Field Installation Guidelines

Backplane Connector Inspection: Verify that the backplane receptacle pins in the designated power slot are clean and free of distortion before sliding the PW481-11 S2 module into position. Secure the module using top and bottom retention latches to maintain proper electrical pin contact.
Equipotential Frame Grounding: Connect the field control rack frame to functional earth (FE) using a dedicated conductor with a minimum gauge of 5.5 mm2. Ensure the safety ground terminal impedance remains under 1 ohm to dissipate high-frequency noise transients.
Mains Supply Wiring Separation: Route incoming AC power lines in separate cable channels away from low-voltage DC signals, ESB/ER bus cables, and network lines. Maintain a clearance gap of at least 200 mm to avoid electromagnetic noise coupling.
Thermal Dissipation Compliance: Maintain unobstructed airflow around cabinet ventilation louvers. Ensure ambient rack enclosure temperatures stay between 0 deg C and +55 deg C to maximize internal component service life.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.