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- Emerson
- VE5132
- Bulk Power Supply Redundancy Module
- USA
- 130 × 45 × 125 mm
- 0.91 kg
- Xiamen, China
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Product Overview
The Emerson VE5132 DeltaV Bulk Power Supply Redundancy Module is a DC power distribution component used in redundant power architectures for industrial automation systems. It connects two compatible DC power sources to a shared load while isolating the sources from one another. This arrangement helps maintain downstream power when one supply becomes unavailable, provided the remaining supply can support the full load.
Unlike a conventional bulk power supply, the VE5132 does not perform the primary AC-to-DC conversion. It operates between the DC power supplies and the load distribution network, supporting source isolation and power availability. Its status-monitoring capability can also be incorporated into a cabinet alarm circuit to help maintenance personnel identify power-related conditions.
In a DeltaV control installation, the module is relevant when a single power-supply failure must not automatically interrupt connected control or instrumentation equipment. Correct application depends on the connected supply ratings, current demand, wiring arrangement, and the required response to a source failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Emerson |
| Model | VE5132 |
| Product Type | DeltaV Bulk Power Supply Redundancy Module |
| Product Series | DeltaV |
| Module Function | DC power redundancy and source isolation |
| Input Type | DC |
| Nominal Input Voltage Range | 12–28 V DC |
| Input Voltage Operating Range | 10.8–30.8 V DC |
| Input Configuration | Dual DC power inputs |
| Output Type | DC |
| Output Voltage | Follows the input voltage, less the module’s internal voltage drop |
| Current Capacity | Confirm against the applicable module rating and operating conditions |
| Typical Input-to-Output Voltage Drop | Approximately 0.2 V |
| Status Monitoring | DC-OK status output |
| Alarm Contact Rating | Normally open contact, up to 60 V DC at 1 A |
| Power Conversion | No AC-to-DC conversion; passes through DC power |
| Dimensions | 130 × 45 × 125 mm |
| Weight | 0.91 kg |
Product Features
- Redundant DC power distribution: Supports a dual-source arrangement feeding a common DC load.
- Input source isolation: Helps prevent a fault on one power-supply output from pulling down the other source.
- Shared output connection: Routes power from the available input source to downstream equipment.
- DC-OK status monitoring: Allows the available status contact to be incorporated into a suitable alarm or diagnostic circuit.
- Low voltage drop: Minimizes the voltage difference between the input and output under specified operating conditions.
- Industrial automation integration: Supports power distribution for compatible control-system and instrumentation loads.
- No separate voltage conversion stage: Passes through DC power rather than converting AC input power into DC.
- Power-system flexibility: Can be incorporated into a cabinet architecture with separate power supplies and protected output branches.
Working Principle
The VE5132 receives DC power from two compatible power supplies through separate input channels. Its internal decoupling circuitry isolates the sources and feeds a common output. If one supply fails or loses its output, the other source can continue powering the connected load, provided the remaining supply and associated wiring are capable of carrying the full demand.
The module does not regulate or boost the DC voltage. The output follows the input voltage minus the internal voltage drop, so the upstream supplies must maintain a suitable voltage for the connected devices. The DC-OK monitoring circuit can be connected to an appropriate status or alarm input to report power conditions.
Power flow: DC power supply A + DC power supply B → isolated redundancy inputs → common DC output → protected distribution circuits → control-system loads.
Role in a DeltaV Control Architecture
Within a DeltaV control cabinet, the VE5132 belongs to the power-distribution layer rather than the control-logic or communication layer. It sits downstream of the DC power supplies and upstream of the load distribution network. Its function is to isolate the two power sources and help maintain the common output when one source becomes unavailable.
A typical arrangement uses two compatible DC power supplies, each connected to a separate input. The VE5132 feeds the shared output, which then supplies the required distribution circuits. For this arrangement to provide effective redundancy, either power supply must be capable of carrying the entire connected load, and the two source paths must be wired and protected according to the system design.
| System Element | Role in the Architecture |
|---|---|
| DC bulk power supply A | Provides the first DC power source |
| DC bulk power supply B | Provides the second DC power source |
| VE5132 redundancy module | Isolates the power inputs and feeds the common output |
| DC output distribution | Routes power to downstream circuits |
| Branch circuit protection | Protects individual distribution branches and wiring |
| DeltaV controllers and I/O equipment | Perform control and signal-processing functions using their required power sources |
| Field instruments and interface devices | Consume DC power according to their electrical ratings |
| DC-OK monitoring circuit | Uses the available status signal for alarm or diagnostic purposes |
Industrial Applications
| Application | How the VE5132 Is Used |
|---|---|
| Distributed control system cabinets | Supports redundant DC power arrangements for compatible control-system loads |
| Oil and gas facilities | Helps maintain power availability for selected instrumentation and control equipment |
| Chemical processing plants | Isolates DC sources supplying process monitoring and control circuits |
| Water and wastewater treatment | Supports redundant power distribution for suitable automation equipment |
| Power generation facilities | Provides source isolation in control and monitoring power arrangements |
| Continuous manufacturing lines | Helps reduce the impact of an individual DC supply failure on connected loads |
| Remote instrumentation cabinets | Combines compatible DC supply paths for field interface and monitoring equipment |
| Control-system upgrades | Adds a redundancy stage where the existing power architecture and load ratings permit it |
Installation and Maintenance
- Verify the model identification: Confirm that the module is VE5132 and that its electrical ratings match the intended redundancy arrangement.
- Check both DC sources: Verify that each connected power supply operates within the module’s permitted input-voltage range.
- Confirm current capacity: Check the applicable continuous current rating under the installation’s operating conditions.
- Calculate the surviving-source load: Ensure that either power supply can carry the required load when the other source is unavailable.
- Verify mounting suitability: Use a mounting arrangement appropriate for the cabinet and the equipment’s installation requirements.
- Isolate power before wiring: Disconnect the DC sources and follow the site’s electrical safety procedures before installation or maintenance.
- Identify input channels correctly: Connect each power supply to its intended input terminal and verify the wiring against the cabinet diagram.
- Observe DC polarity: Check positive and negative connections before energizing the module or downstream equipment.
- Size conductors appropriately: Select wiring and terminal connections suitable for the actual current, ambient conditions, and applicable electrical requirements.
- Check the output voltage: Confirm that the output remains within the permissible operating range of every connected device, allowing for the module’s voltage drop.
- Verify status monitoring: Test the DC-OK contact and its connected alarm circuit during commissioning.
- Inspect during scheduled maintenance: Check terminal tightness, conductor condition, signs of overheating, mounting security, and correct operation of the redundant power arrangement.
Related Components
| Component | Function |
|---|---|
| Compatible DC bulk power supply | Converts incoming power into the DC supply required by the installation |
| Second redundant DC power supply | Provides an alternative source when the primary source becomes unavailable |
| DC distribution terminals | Distribute the redundancy module’s output to connected loads |
| Branch circuit protection | Protects downstream wiring and individual circuits |
| DeltaV system power equipment | Uses the distributed DC supply according to its electrical requirements |
| Field instrumentation | Receives DC power through the cabinet distribution network where compatible |
| DC-OK alarm circuit | Monitors the available status contact and communicates power status to the wider system |
| Cabinet grounding and wiring system | Supports electrical safety and grounding requirements |
Recommended Related Models
| Model | Product Description | Typical Use |
|---|---|---|
| VE5123 | DeltaV Bulk Power Supply, 24 V DC, 10 A | DC power for lower-current applications |
| VE5128 | DeltaV Bulk Power Supply, 24 V DC, 40 A | Higher-current bulk DC power |
| VE5138 | DeltaV Bulk Power Supply, 24 V DC, 5 A | Smaller DC loads |
| VE5126 | DeltaV Bulk Power Supply, 24 V DC, 20 A | Intermediate power requirements |
| VE5129 | DeltaV Bulk Power Supply, 24 V DC, 40 A, conformal coating | Related bulk power supply option for suitable installations |
Key Advantages
- Source isolation: Helps prevent a fault on one DC supply input from affecting the other source.
- Redundant power support: Enables a dual-source arrangement for compatible loads.
- Status monitoring: Supports integration of the DC-OK contact into an alarm or diagnostic circuit.
- Low power-path voltage drop: Helps preserve the available voltage for downstream devices.
- Simplified power architecture: Combines redundant DC sources at a common output.
- System continuity support: Reduces dependence on a single power source when installed as part of a correctly rated redundant arrangement.
Technical FAQs
How does the VE5132 help maintain power when one DC supply fails?
The module isolates its two DC input sources and routes available power to a common output. If one supply becomes unavailable, the remaining supply can continue feeding the load if it is operating correctly and has sufficient capacity for the full demand.
Does the VE5132 regulate the output voltage?
No. It is a redundancy module, not an AC-to-DC converter or DC voltage regulator. The output follows the input voltage minus the module’s internal voltage drop, so the upstream power supplies must provide an appropriate voltage for the connected equipment.
What should be checked when selecting a VE5132 for a redundant arrangement?
Check the module’s applicable current rating, input-channel limits, operating temperature, total load, conductor sizing, and voltage drop. The remaining power supply must be able to carry the entire load after a source failure; the redundancy module cannot compensate for insufficient supply capacity.
Can the VE5132’s DC-OK contact be used for system alarms?
The available DC-OK status contact can be incorporated into a suitable monitoring or alarm circuit. Observe the contact rating and the requirements of the connected signaling interface, then test the alarm logic during commissioning to confirm that the intended power conditions are detected.