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- Bulk Power Supply
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Product Overview
The Emerson VE5012 is a DeltaV M-series bulk power supply that converts an incoming AC supply into 12 VDC for compatible control-system power arrangements. It is associated with legacy M-series installations where the 12 VDC output serves system power hardware, including the VE5009 DC/DC dual system power supply. Its role is different from a general-purpose 12 VDC supply: selection depends on the electrical requirements and architecture of the installed DeltaV system.
In a process-control cabinet, the VE5012 can form the upstream power stage for system electronics. Incoming AC power is converted to 12 VDC, which can then feed compatible downstream power hardware. The downstream unit handles the next stage of power distribution to the control-system components. This arrangement allows the cabinet’s AC input, DC conversion, and system power functions to be handled by separate components.
The distinction between system power and field power is important when planning a replacement. The VE5012 should not automatically be treated as an interchangeable substitute for the VE5011, even though both belong to the DeltaV bulk power supply family. The VE5011 is associated with a 24 VDC output for field-power applications, whereas the VE5012 is associated with a 12 VDC output used in the corresponding M-series power arrangement.
When maintaining an existing installation, the relevant checks include the incoming AC supply, the required DC output, the downstream power-supply model, the connected load, and any redundancy arrangement. A mismatch in output voltage or power architecture can affect more than one device in the cabinet.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Emerson |
| Model | VE5012 |
| Product Type | Bulk Power Supply |
| Product Series | DeltaV M-series |
| Power Supply Category | DIN-rail-mounted bulk power supply |
| Input Power Type | AC |
| Input Supply | 120/240 VAC nominal supply arrangement |
| Output Voltage | 12 VDC |
| Primary Function | AC-to-DC power conversion |
| Typical System Role | Supplies compatible 12 VDC system power hardware |
| Associated System Power Supply | VE5009 DC/DC Dual System Power Supply |
| Installation Type | DIN rail |
| System Application | DeltaV M-series power architecture |
| Dimensions | 123 × 50 × 110 mm |
| Weight | 0.6 kg |
Product Features
12 VDC output configuration: The VE5012 supplies the voltage required by compatible downstream equipment in the specified M-series power arrangement. The output voltage is a critical selection criterion; a 24 VDC supply cannot be substituted solely because its physical dimensions or product-family designation appear similar.
AC-to-DC conversion: The unit converts the cabinet’s incoming AC supply into DC power. This separates the incoming power source from the downstream system-power equipment and allows each stage to be assessed according to its own electrical requirements.
Use with compatible M-series system power hardware: The VE5012 is associated with the VE5009 DC/DC dual system power supply in legacy DeltaV M-series installations. The complete arrangement must be checked to confirm that the downstream equipment accepts the VE5012’s output and that the resulting supply capacity meets the system load.
DIN-rail mounting: The DIN-rail form supports installation in a control cabinet alongside other power-distribution and automation hardware. The mounting arrangement should allow access to terminals and adequate space for heat dissipation.
Suitable for established control-system installations: The model is relevant when maintaining or restoring a compatible M-series power arrangement. Its role should be determined from the installed architecture rather than inferred from the name “bulk power supply” alone.
Separate system-power and field-power functions: The VE5012’s 12 VDC output role differs from the VE5011’s 24 VDC field-power role. Keeping these functions distinct helps avoid wiring errors and incorrect replacement selection during cabinet maintenance.
Working Principle
The VE5012 receives AC input power and converts it to a 12 VDC output. Compatible downstream hardware draws current from this output to support the next stage of the control system’s power arrangement. The supply must operate within its electrical limits, and the connected equipment must be compatible with the output voltage and available capacity.
Consider a legacy DeltaV M-series cabinet with a VE5009 DC/DC dual system power supply. In this arrangement, the VE5012 can provide the 12 VDC input required by the downstream system power supply. The VE5009 then serves its own system-power function for compatible control-system hardware. The VE5012 therefore forms part of a power chain rather than directly performing controller logic or field-signal acquisition.
This distinction also matters during fault diagnosis. If a controller or I/O subsystem loses power, technicians should inspect the relevant supply stages and their connections instead of assuming that the controller or I/O card has failed. Measurements at the VE5012 output, the downstream input, and the applicable system-power points help isolate whether the problem originates in the incoming AC supply, the bulk power supply, the wiring, or a downstream component.
Where redundant supplies are installed, the wiring arrangement must follow the intended system architecture. Connecting power outputs in an unsuitable configuration can create a common point of failure or cause unexpected behavior during a supply fault. Redundancy should therefore be checked as a complete arrangement, including the upstream supplies, downstream system power hardware, and distribution wiring.
Role in a DeltaV M-Series Power Architecture
The VE5012 occupies the AC-to-12 VDC conversion stage in a compatible DeltaV M-series power arrangement. It supplies downstream hardware rather than processing process measurements or executing control strategies. The downstream power supply, controller, I/O subsystem, and field circuits each retain their own functions and electrical requirements.
| System Component | Function | Relationship to VE5012 |
|---|---|---|
| AC Input Distribution | Provides incoming power to cabinet equipment | Supplies the VE5012 input |
| VE5012 Bulk Power Supply | Converts AC input into 12 VDC | Forms the upstream DC supply stage |
| VE5009 DC/DC Dual System Power Supply | Provides system power from an appropriate DC input arrangement | Can receive 12 VDC from the VE5012 in a compatible M-series configuration |
| System Power Distribution | Routes power to the intended control-system hardware | Carries power from the applicable downstream supply stage |
| DeltaV Controller | Executes configured control strategies | Performs control processing independently of the VE5012’s power-conversion function |
| DeltaV I/O Modules | Interface with field inputs and outputs | Require the power arrangement specified for the installed hardware |
| Field Instruments | Measure process variables or receive control commands | Use the appropriate field signal and power circuits |
| Protective Devices | Protect circuits and wiring against applicable fault conditions | Must be coordinated with the input supply, conductors, and connected load |
| Cabinet Grounding and Bonding | Establishes the required electrical grounding arrangement | Supports the cabinet installation according to its design |
Industrial Applications
| Application | Power-System Requirement | Use of VE5012 |
|---|---|---|
| Legacy DeltaV M-Series Cabinets | Maintain the existing AC-to-12 VDC power path | Supplies 12 VDC to compatible downstream power hardware |
| Process-Control System Maintenance | Replace a power unit without changing the established architecture | Can be selected when the installed arrangement specifically calls for VE5012 |
| Chemical Processing Facilities | Keep process-control cabinet power organized by function | Supports the DC power stage of a compatible M-series installation |
| Oil and Gas Control Systems | Maintain power to control-system electronics through the designated supply chain | Forms part of the cabinet’s system-power arrangement |
| Refinery Instrumentation Cabinets | Separate bulk conversion from downstream system power | Supplies the required 12 VDC stage where the installed design uses this model |
| Redundant Control-System Installations | Maintain the intended primary and backup supply arrangement | May be used within a compatible arrangement when the required redundancy wiring is followed |
| Control-System Fault Diagnosis | Identify whether power problems originate upstream or downstream | Provides a defined measurement point for checking the 12 VDC supply stage |
Installation and Maintenance
- Verify the complete model reference: Confirm that the required unit is VE5012 and that the existing DeltaV M-series power architecture specifies this 12 VDC bulk power supply.
- Check the downstream equipment: Identify the connected system power supply and verify that its input requirements match the VE5012 output. For a VE5009-based arrangement, confirm the intended system configuration before wiring.
- Confirm the incoming AC supply: Check the installed supply voltage and frequency against the unit’s applicable electrical specifications. Do not assume the input arrangement from the model number alone.
- Calculate the connected load: Establish the downstream current and power requirements. Confirm that the supply capacity is sufficient for normal operation and the expected operating conditions.
- Inspect the DIN-rail mounting: Ensure that the rail is secure and that the supply is mounted in the intended orientation. Allow sufficient space for terminal access and heat dissipation.
- Verify terminal identification: Confirm the input and output terminal designations against the unit markings and the cabinet wiring documentation before connecting conductors.
- Check the DC output polarity: Verify the positive and negative connections and ensure that the downstream equipment receives the required 12 VDC supply.
- Maintain proper circuit protection: Check that the upstream protective devices and conductors are suitable for the input supply and connected load. Do not rely on the power supply alone to protect the complete circuit.
- Inspect grounding and cabinet wiring: Follow the installation’s grounding and bonding requirements. Route and secure wiring to prevent accidental contact, mechanical strain, or interference with adjacent equipment.
- Verify redundancy arrangements: If primary and backup supplies are installed, confirm that their connections follow the intended DeltaV architecture. Avoid improvised parallel connections or changes to ORing arrangements.
- Measure voltage during commissioning: Check the output at the VE5012 and, where applicable, at the downstream power-supply input. Confirm that the voltage remains suitable when the system is operating under load.
- Inspect the unit during scheduled maintenance: Check terminal tightness, cable condition, mounting security, ventilation, and signs of overheating or physical damage. Isolate the relevant power sources before carrying out work that requires de-energization.
Related Components
| Component | Function | Relationship to VE5012 |
|---|---|---|
| VE5009 DC/DC Dual System Power Supply | Supplies DeltaV M-series system power from a compatible DC input | Relevant downstream component in the VE5012 12 VDC power arrangement |
| VE5011 Bulk Power Supply | Converts AC input into 24 VDC for compatible field-power applications | Related family member, but its 24 VDC output serves a different power requirement |
| VE5005 Bulk 24 VDC-to-12 VDC Power Supply | Converts a 24 VDC source into 12 VDC | Relevant when the available input source is 24 VDC rather than the VE5012’s AC input arrangement |
| VE5001 AC-to-DC System Power Supply | Provides system power from an AC input in the applicable M-series architecture | Related system-power hardware; its output arrangement and role differ from the VE5012 |
| DeltaV M-Series Controller | Executes control strategies | Depends on the appropriate system-power architecture rather than directly on the VE5012’s control function |
| DeltaV M-Series I/O Modules | Interface with process instruments and field signals | Require the correct system and field-power arrangements for their specific module types |
| DC Distribution Terminals | Route DC power to connected equipment | Carry the output to the intended downstream loads |
| Circuit Breaker or Fuse | Provides circuit protection | Must be selected for the actual input circuit, wiring, and load |
| DIN Rail | Supports cabinet-mounted hardware | Provides the mounting interface for compatible power-supply equipment |
Recommended Related Models
| Model | Product Description | Key Difference and Selection Notes |
|---|---|---|
| VE5012 | DeltaV M-Series Bulk AC-to-12 VDC Power Supply | Reference model for installations that require the VE5012 12 VDC supply configuration |
| VE5011 | DeltaV Bulk AC-to-24 VDC Power Supply | Produces 24 VDC rather than 12 VDC and is associated with field-power applications; not a direct voltage-equivalent replacement |
| VE5005 | DeltaV Bulk 24 VDC-to-12 VDC Power Supply | Converts a 24 VDC input to 12 VDC; relevant when the cabinet has a suitable 24 VDC source instead of the VE5012 AC-input arrangement |
| VE5009 | DeltaV M-Series DC/DC Dual System Power Supply | A downstream system-power component associated with compatible M-series configurations; it is not a bulk AC-to-12 VDC replacement for VE5012 |
| VE5001 | DeltaV M-Series AC-to-DC System Power Supply | Performs a system-power role in the M-series architecture; assess its output and function against the existing design before considering a change |
The most appropriate related model depends on where the power conversion occurs in the cabinet. VE5011 is relevant to a 24 VDC field-power requirement, VE5005 to a 24 VDC input that must be converted to 12 VDC, and VE5009 to the downstream system-power stage in a compatible M-series configuration. These models perform different functions and should not be substituted based only on their shared DeltaV branding.
Key Advantages
- Defined 12 VDC conversion stage: Separates incoming AC power from downstream DC-powered system hardware.
- M-series power architecture integration: Fits the specified role in compatible legacy DeltaV M-series installations.
- Supports staged power distribution: Allows bulk conversion and downstream system-power functions to be handled by separate components.
- Useful for maintenance and fault isolation: Provides a distinct supply stage to check when diagnosing power interruptions.
- Compact cabinet installation: The supplied dimensions support planning for a relatively small DIN-rail-mounted unit.
Technical FAQs
What is the primary role of the VE5012 in a DeltaV M-series installation?
The VE5012 converts incoming AC power into a 12 VDC output for compatible power-system hardware. In an applicable legacy M-series configuration, it can supply the VE5009 DC/DC dual system power supply. It does not perform controller logic or directly process field signals.
Why is the VE5012 not interchangeable with the VE5011?
The two units have different output-voltage roles. The VE5012 is associated with 12 VDC system-power arrangements, while the VE5011 supplies 24 VDC for compatible field-power applications. The required downstream equipment and the cabinet’s power architecture determine which model is appropriate.
When would the VE5005 be considered instead of the VE5012?
The VE5005 is a DC-to-DC converter that takes a 24 VDC input and produces 12 VDC. It may be relevant when a suitable 24 VDC source is already available. The VE5012, by contrast, uses an AC input arrangement to produce 12 VDC. The input source and downstream requirements must both be considered.
What should be checked if the VE5009 or connected control hardware loses power?
Check the incoming AC supply, the VE5012 output voltage, terminal connections, and the wiring to the downstream system power supply. If the VE5012 output is correct, investigate the downstream supply and subsequent distribution points. For redundant installations, also verify the primary and backup connections against the intended architecture.