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- VE5123
- Bulk Power Supply
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- 123 × 60 × 110 mm
- 0.8 kg
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Product Overview
The Emerson VE5123 DeltaV Bulk Power Supply is part of the power infrastructure used in Emerson DeltaV distributed control system installations. Bulk power supplies provide DC power for compatible control-system equipment and associated power-distribution circuits. Their selection affects the available power capacity, wiring arrangement, and overall configuration of a control cabinet.
In a DeltaV installation, bulk power is distributed to the equipment according to the system design. The supply must be matched to the input requirements of the connected hardware and the intended power-distribution arrangement. During commissioning or cabinet expansion, engineers calculate the connected load, confirm the required DC voltage, and verify that the power source has sufficient capacity for normal operation and the expected operating conditions.
The VE5123 model designation is important when identifying a replacement or maintaining an existing DeltaV power system. A suitable replacement must match the required electrical characteristics and installation requirements rather than relying on a similar product name alone. Correct identification helps maintenance personnel avoid voltage mismatches, insufficient power capacity, and unnecessary changes to the cabinet wiring.
For maintenance planning, the physical dimensions and weight are also relevant when checking cabinet space, mounting arrangements, and handling requirements. The VE5123 should be installed and operated within the limits specified for the particular system configuration, with appropriate attention to DC input wiring, grounding, ventilation, and power-distribution protection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE5123 |
| Product Family | DeltaV |
| Product Type | Bulk Power Supply |
| Power Supply Category | Industrial DC Power Supply |
| System Platform | Emerson DeltaV |
| Primary Function | DC power supply for compatible system equipment |
| Application | Distributed control system power infrastructure |
| Installation Environment | Industrial control cabinet or designated power-distribution location |
| Dimensions | 123 × 60 × 110 mm |
| Weight | 0.8 kg |
Product Features
- DeltaV system identification: The VE5123 model designation identifies the power supply associated with the specified DeltaV installation.
- Bulk power application: Supports the power infrastructure used to supply compatible control-system equipment.
- Control cabinet integration: Can be incorporated into an industrial power-distribution arrangement according to the system design.
- Model-specific replacement: The complete part number helps distinguish the required supply from other DeltaV power-supply variants.
- Power-distribution support: Serves as a power source within the broader electrical architecture of a control installation.
- Installation planning: Published dimensions help engineers assess available cabinet space and mounting clearances.
- Maintenance identification: The model number supports equipment inventories, maintenance records, and spare-parts planning.
- Load assessment: Selection requires consideration of connected equipment demand and the electrical ratings specified for the installation.
- Wiring coordination: Input and output connections must follow the designated power-distribution arrangement.
- System expansion planning: Power capacity should be reassessed when additional control or field equipment is added.
- Cabinet organization: Proper mounting and wiring practices help maintain clear separation between power and signal circuits where required.
- Serviceability: Accurate model identification helps technicians investigate power-related faults and select the specified replacement.
- Industrial application: Suitable use depends on the electrical and environmental requirements of the installed DeltaV system.
- Configuration-specific installation: The supply should be used with compatible equipment and within its documented operating limits.
Working Principle
The Emerson VE5123 functions as a power source within the DeltaV control-system power architecture. Its role is to supply electrical power to the equipment and circuits specified for the installation. The exact input range, output voltage, rated current, and protection characteristics must be established from the applicable model documentation.
Incoming Power → VE5123 Bulk Power Supply → DC Power Distribution → Compatible DeltaV Equipment
The incoming electrical supply is connected to the power supply according to the prescribed wiring arrangement. The unit delivers power to its designated output connections, from which the compatible system equipment receives the electrical energy required for operation. The connected equipment then performs its own functions, such as controller execution, I/O signal processing, communication, or field-device interfacing.
During commissioning, engineers verify the incoming supply, confirm output conditions, and calculate the total load connected to the power distribution system. A power source that is incorrectly rated or overloaded can cause equipment interruptions, voltage deviations, or unexpected shutdowns. The required capacity should therefore be evaluated against the actual installed load rather than the number of devices alone.
If a power-related fault occurs, troubleshooting begins with the input source, protective devices, wiring connections, and output distribution path. The condition of the connected equipment and the overall load should also be checked before a fault is attributed to the supply itself.
Role in a DeltaV Control Architecture
The Emerson VE5123 occupies the power-distribution layer of a DeltaV control installation. It converts incoming AC power into regulated 24 V DC power for compatible control-system equipment and associated DC circuits. Its 10 A output rating supports a defined load capacity that must be considered when configuring the cabinet’s power distribution.
AC Power Source → VE5123 Bulk Power Supply → 24 V DC Distribution → Compatible DeltaV Control Equipment and Field Circuits
| System Element | Function |
|---|---|
| AC Power Source | Supplies the incoming electrical power required by the VE5123 |
| VE5123 Bulk Power Supply | Converts AC input power into regulated 24 V DC output |
| DC Power Distribution | Routes the 24 V DC supply to designated loads |
| DeltaV Controller Hardware | Executes configured process-control strategies |
| DeltaV I/O Modules | Acquire process inputs and provide control outputs |
| Field Instruments | Measure process variables such as pressure, temperature, and flow |
| Final Control Elements | Act on control commands, where supported by the connected output circuits |
| Protective Devices | Provide circuit protection according to the electrical design |
| Power Status Monitoring | Allows supply status to be monitored through the designated signal or alarm arrangement |
| Operator Workstation or HMI | Displays process values, alarms, and operating information |
The VE5123 supplies power rather than executing control logic. Its 24 V DC output capacity, connected load, protective devices, and any required redundancy arrangements should be evaluated as part of the complete system design.
Industrial Applications
| Application | Typical Use |
|---|---|
| Distributed Control Systems | Supplying 24 V DC power to compatible DeltaV system equipment |
| Chemical Processing | Supporting control cabinet power distribution in process plants |
| Oil and Gas Facilities | Supplying DC power to designated process-control circuits |
| Petrochemical Plants | Providing power for compatible control and instrumentation equipment |
| Power Generation | Supporting DC power requirements in plant control cabinets |
| Water and Wastewater Treatment | Powering compatible automation and monitoring equipment |
| Industrial Manufacturing | Supplying control-system circuits in automated production facilities |
| Refinery Automation | Supporting distributed control system power infrastructure |
| Control Cabinet Construction | Providing 24 V DC power for specified cabinet loads |
| System Expansion | Adding power capacity when the installed load and distribution design permit |
Installation and Maintenance
- Verify the model identification: Confirm that the power supply is an Emerson VE5123 and that its electrical ratings match the intended installation.
- Check the AC input supply: Verify that the incoming voltage and frequency are within the specified operating range before connecting the unit.
- Calculate the connected load: Confirm that the total continuous DC load remains within the supply’s 10 A output rating and 240 W rated output power.
- Plan the mounting arrangement: Check the installation position, available cabinet space, required clearances, and mounting method specified for the unit.
- Follow electrical isolation procedures: Disconnect the incoming power before installation, wiring changes, inspection, or replacement.
- Inspect the power supply: Check the housing, terminals, and accessible connections for physical damage, contamination, or signs of overheating.
- Verify input and output wiring: Confirm the AC input terminals and 24 V DC output connections against the wiring diagram, including polarity on the DC side.
- Check protective devices: Verify that upstream circuit protection and downstream DC branch protection are appropriate for the wiring and connected equipment.
- Secure the wiring: Ensure that conductors are correctly terminated, mechanically secured, and routed to avoid strain or contact with sharp edges.
- Restore power and check the output: Energize the supply according to the commissioning procedure and verify that the output voltage is within the specified range.
- Investigate abnormal operation: If the output is missing or unstable, check the incoming supply, connected load, protective devices, wiring, and status indications before replacing the unit.
- Document the maintenance work: Record the model, input and output measurements, inspection findings, and any replacement or wiring changes in the maintenance records.
Related Components
| Component | Function |
|---|---|
| DeltaV Controller Hardware | Executes configured process-control strategies |
| DeltaV I/O Modules | Interface with process signals and control outputs |
| 24 V DC Distribution Terminals | Distribute the supply output to designated circuits |
| AC Circuit Protection | Protects the incoming power circuit according to the system design |
| DC Branch Protection | Protects downstream wiring and connected loads |
| Field Instrumentation | Measures process conditions for monitoring and control |
| Control Cabinet Wiring | Routes input power and DC output connections |
| Power Monitoring Circuit | Monitors designated power-supply status signals where available |
| Grounding and Bonding Hardware | Supports the installation’s protective grounding arrangement |
| DeltaV System Documentation | Defines wiring, power budgets, installation requirements, and maintenance procedures |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Emerson VE5123 | DeltaV Bulk Power Supply, 100–240 V AC to 24 V DC, 10 A | Specified model for this product entry |
| Emerson VE5138 | DeltaV Bulk Power Supply, 100–240 V AC to 24 V DC, 5 A | Lower-current 24 V DC power supply for installations with a suitable load |
| Emerson DeltaV Bulk Power Supplies | Industrial DC Power Supplies | Selection of power supplies according to required output voltage and current |
| DeltaV Controller Hardware | Process Control Controller | Executes configured process-control strategies |
| DeltaV I/O Modules | Input/Output Modules | Interfaces with field instruments and control circuits |
| DeltaV Power Distribution Components | DC Power Distribution Hardware | Distributes power to designated system loads |
Key Advantages
- Converts AC input power into regulated 24 V DC output for compatible industrial equipment.
- Provides a rated output capacity of 10 A and 240 W.
- Supports DeltaV control-system power distribution within a correctly sized installation.
- Offers a compact form factor for control cabinet planning.
- Supports structured power distribution when paired with suitable circuit protection and wiring.
- Simplifies spare-parts identification through the VE5123 model designation.
- Allows power capacity to be assessed against the actual load during commissioning and system expansion.
- Supports maintenance procedures based on measurable input, output, and load conditions.
Technical FAQs
What Is the Emerson VE5123 DeltaV Bulk Power Supply Used For?
The Emerson VE5123 is a DeltaV bulk power supply that converts 100–240 V AC input power into 24 V DC output power. Its rated output is 10 A, equivalent to 240 W, making it suitable for compatible control-system and DC power-distribution applications within its specified operating limits.
What Is the Output Voltage and Current Rating of the VE5123?
The VE5123 supplies 24 V DC with a rated output current of 10 A and rated output power of 240 W. The connected load, wiring, protective devices, and environmental conditions must be considered when determining whether the supply can support a particular installation.
Can the VE5123 Replace the Emerson VE5138?
The VE5123 and VE5138 are both DeltaV bulk power supplies with 24 V DC output, but their rated current capacities differ. The VE5123 is rated at 10 A, while the VE5138 is rated at 5 A. A replacement decision must also account for mounting, wiring, input requirements, protection, and the load requirements of the installed system.
What Should Be Checked if the VE5123 Does Not Provide the Expected 24 V DC Output?
Check the incoming AC voltage, input wiring, protective devices, output connections, and total connected load. Inspect for loose terminals or signs of overheating, and verify the output using an appropriate measuring instrument. If the supply remains outside its specified operating range after external wiring and load conditions have been checked, further testing or replacement may be necessary.