YOKOGAWA PW482-10 | AC Input Power Supply Module

Description

The YOKOGAWA PW482-10 is a 220–240 VAC input power supply module used in Yokogawa CENTUM control-system infrastructure. It can be installed in Field Control Units (FCUs), FIO Node Units, and Optical ESB Bus Repeater Units. Two identical PW482 modules can be installed for a dual-redundant power configuration.

The module is designed specifically for Yokogawa system hardware and should not be treated as a general-purpose AC/DC power supply. Yokogawa’s own specification states that the output voltage and current are not specified as generic power-supply ratings because the PW482 is intended exclusively for compatible FCU, FIO Node Unit, and Optical ESB Bus Repeater applications.

 

📋 Product Datasheet

The official Yokogawa specification confirms 220–240 VAC ±10%, 50/60 Hz ±3 Hz, maximum power consumption of 230 VA, approximately 1 kg weight, and dedicated input/output connectors.

⚠️ Output note: Do not use generic 5.1 VDC/24 VDC output figures from third-party listings as a universal specification for every PW482-10 configuration. Yokogawa explicitly states that the output voltage/current are not specified as generic power-supply ratings because the module is dedicated to its intended Yokogawa system units.

 

⚙️ Main Functions

🔹 Provides operating power for compatible Yokogawa control-system hardware.

🔹 Supports Field Control Unit power requirements.

🔹 Supports FIO Node Unit applications.

🔹 Supports Optical ESB Bus Repeater Unit applications.

🔹 Allows dual-redundant power configuration when two identical modules are installed.

🔹 Provides an AC input interface for 220–240 VAC plant power.

🔹 Supports continuous operation in industrial process-control environments.

 

🛠️ Operating Instructions & How to Use

1. 🔍 Confirm the installed system uses a compatible Yokogawa FCU, FIO Node Unit, or Optical ESB Bus Repeater Unit.
2. 🏷️ Verify the complete module marking PW482-10.
3. ⚡ Confirm that the incoming supply is 220–240 VAC.
4. 📏 Verify that the input frequency is 50/60 Hz.
5. 🔌 Inspect the dedicated connector and wiring.
6. 🧰 Confirm that the module is installed in the correct power-supply position.
7. 🔧 Make sure the module is firmly seated.
8. ⚡ Apply AC power according to the system commissioning procedure.
9. 🟢 Check the FCU/FIO system status.
10. 📊 Verify that the associated I/O and communication modules initialize correctly.
11. 🔄 For redundant systems, confirm that both power-supply modules are recognized correctly.
12. ✅ Return the process-control system to normal operation after all diagnostics are clear.

Yokogawa documentation specifies that PW481/PW482/PW484 power modules are installed in the designated power-supply slots, with P1 used for a single configuration and two identical modules used for dual redundancy.

 

🔌 Power-On Sequence

For a Yokogawa control-system cabinet, use the following general sequence:

1. 🧰 Confirm all modules are properly installed.
2. 🔌 Check AC input wiring.
3. ⚡ Measure the incoming voltage before energization.
4. 🔍 Confirm the voltage is within the 220–240 VAC ±10% range.
5. 🛡️ Verify protective grounding and upstream protection.
6. ⚡ Energize the power supply.
7. ⏳ Allow the PW482-10 and system modules to initialize.
8. 🖥️ Check system diagnostic information.
9. 📡 Confirm communication with the control system.
10. 🔍 Check FIO and FCU status.
11. 🔄 If redundant, verify the standby power module is available.
12. ✅ Start normal process operation.

 

🔻 Power-Off / Shutdown Sequence

1. 🛑 Place the controlled process into a safe condition.
2. 🖥️ Stop automatic control according to the plant procedure.
3. 💾 Save required system information and maintenance records.
4. ⚡ Switch off the associated AC power source.
5. 🔒 Apply lockout/tagout procedures where required.
6. ⏳ Wait for internal circuits to discharge.
7. 🔍 Verify that hazardous voltage is absent.
8. 🔧 Remove the PW482-10 only after electrical isolation is confirmed.
9. 📦 Place the removed module in antistatic protective packaging.
10. 🔄 After replacement, verify wiring and module seating before restoring power.

 

📖 Product Usage Notes

The PW482-10 is a system-specific power module, not an independent industrial AC/DC supply.

A typical application can be represented as:

220–240 VAC Supply → PW482-10 → Yokogawa FCU / FIO Node / Optical ESB Repeater → Control & I/O Modules

The module can be used in a redundant arrangement:

PW482-10 #1 + PW482-10 #2 → Dual-Redundant System Power

Yokogawa specifies that two identical power-supply modules are required for a dual-redundant configuration.

🔍 Compatible Installation Units

The PW482 family can be installed in:

🔹 FCU: AFV30D / AFV30S

🔹 FCU: A2FV50D / A2FV50S

🔹 FCU: A2FV70D / A2FV70S

🔹 FIO Node Unit: ANB10D / ANB10S

🔹 FIO Node Unit: ANB11D / ANB11S

🔹 Optical ESB Bus Repeater Unit: ANT10U

🔹 Base Plate: A2BE1D / A2BE2D

These installation references are documented for the PW481/PW482/PW484 family.

 

🧪 Inspection Before Installation

🔍 Check the model label.

🔍 Confirm PW482-10.

🔍 Inspect the enclosure for cracks or deformation.

🔍 Check the dedicated connector.

🔍 Inspect terminals and contacts for oxidation.

🔍 Check for overheating marks.

🔍 Look for corrosion or moisture.

🔍 Confirm the AC input voltage.

🔍 Check the mounting position.

🔍 Verify the associated FCU/FIO unit.

🔍 For redundant systems, confirm that the second module has the same model configuration.

 

⚠️ Important Replacement Notes

When replacing a PW482-10, do not select a module only because the housing looks similar.

Pay particular attention to:

🔹 PW481 vs. PW482 vs. PW484

🔹 Input voltage

🔹 Complete suffix code

🔹 System unit type

🔹 Connector configuration

🔹 Single vs. redundant installation

🔹 Hardware revision

🔹 Existing system configuration

The basic PW48 family differentiates primarily by input power: PW481 = 100–120 VAC, PW482 = 220–240 VAC, and PW484 = 24 VDC.

 

❓ Common Questions & Answers

Q: What is YOKOGAWA PW482-10?
A: It is a 220–240 VAC input power supply module for compatible Yokogawa process-control system hardware.

Q: What voltage does PW482-10 use?
A: It uses 220–240 VAC ±10% at 50/60 Hz ±3 Hz.

Q: What is the maximum power consumption?
A: The specified maximum power consumption is 230 VA.

Q: What is the weight?
A: Yokogawa specifies approximately 1 kg.

Q: Can PW482-10 be used as a standalone power supply?
A: No. Yokogawa specifically states that the PW48 series is an exclusive module for FCU, FIO Node Unit, and Optical ESB Bus Repeater Unit applications.

Q: Can two PW482-10 modules be used together?
A: Yes. Two identical modules can be used for a dual-redundant power configuration.

Q: What is the difference between PW481 and PW482?
A: PW481 is designed for 100–120 VAC input, while PW482 is designed for 220–240 VAC input.

Q: What is the difference between PW482 and PW484?
A: PW482 uses 220–240 VAC input, while PW484 uses 24 VDC input.

Q: Can PW482 replace PW484?
A: No. Their input power types are different. The complete system configuration must be checked before replacement.

Q: Does the PW482-10 have a generic DC output rating?
A: Yokogawa’s official specification does not define the output as a generic power-supply rating because the module is designed specifically for its associated Yokogawa system units.

Q: What should I check before purchasing?
A: Check the exact model, suffix, input voltage, connector arrangement, installation unit, hardware revision, and whether the system uses redundant power supplies.

 

⭐ Recommended YOKOGAWA Models / Series

1. YOKOGAWA PW481 — 100–120 VAC Input Power Supply Module
2. YOKOGAWA PW482 — 220–240 VAC Input Power Supply Module
3. YOKOGAWA PW484 — 24 VDC Input Power Supply Module
4. YOKOGAWA PW482-10 S2 — PW482 Power Supply Variant
5. YOKOGAWA PW481-10 — PW481 Power Supply Variant
6. YOKOGAWA PW484-10 — PW484 Power Supply Variant
7. YOKOGAWA PW482-11 — Related PW482 Configuration
8. YOKOGAWA PW482-12 — Related PW482 Configuration
9. YOKOGAWA PW484-11 — Related PW484 Configuration
10. YOKOGAWA PW484-12 — Related PW484 Configuration

 

📦 Storage & Handling

📦 Store the module in a clean, dry environment.

🛡️ Use ESD-safe packaging for long-term storage and transportation.

💧 Protect the module from condensation and moisture.

🔌 Protect the dedicated connector from impact and contamination.

🌡️ Avoid excessive heat and direct sunlight.

🏷️ Keep the original model label and revision information intact.

Before installation, compare the replacement module against the original PW482-10 and confirm that the input voltage and system application are identical.

Recommended Short Listing Title

YOKOGAWA PW482-10 | AC Input Power Supply Module | 220-240VAC

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