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The Emerson VE5109 DeltaV M-Series DC to DC System Power Supply supplies regulated DC power to DeltaV M-Series controllers and I/O interfaces. It accepts 12 V DC or 24 V DC input power and generates the voltage rails required by the control system electronics. Within a distributed control system (DCS), this module supports the power infrastructure needed for process monitoring, controller operation, and I/O signal handling.
The VE5109 is installed in a compatible DeltaV power/controller carrier rather than functioning as a standalone power converter. The carrier provides internal power buses for the controller and I/O interfaces, reducing the need for separate external power wiring between these components. This arrangement is useful when building new control cabinets, maintaining existing M-Series installations, or expanding a process control system.
The module provides a 12 V DC output for I/O interface power and supplies the 5 V DC and 3.3 V DC rails required by the controller electronics. When supplied from a 24 V DC bulk power source, the enhanced M-Series DC/DC power supply supports up to 8.0 A on the 12 V DC I/O interface power bus within its specified operating conditions. The available output capacity must be evaluated against the actual controller, I/O carrier, and module load.
For maintenance and system upgrades, the VE5109 supports modular installation and power-system expansion. Its input compatibility allows integration with suitable 12 V DC or 24 V DC plant power arrangements, while power-status indication and relay alarm contacts help technicians identify supply-related problems. Correct carrier selection, load calculations, input wiring, and redundancy planning remain essential to maintaining the intended system availability.
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE5109 |
| Product Family | DeltaV M-Series |
| Product Type | DC to DC System Power Supply |
| Power Conversion Type | DC-to-DC |
| Input Voltage | 12 V DC or 24 V DC |
| 12 V DC Input Rating | 12 V DC, -4% to +5%, at 14.8 A |
| 24 V DC Input Rating | 24 V DC ±20%, at 6.1 A |
| 12 V DC Output at 12 V DC Input | Up to 13 A at -40 to 60°C |
| 12 V DC Output at 24 V DC Input | Up to 8.0 A at -40 to 60°C |
| 12 V DC Output at 60 to 70°C | Up to 10 A with 12 V DC input or 6.0 A with 24 V DC input |
| 5 V DC Output | 2.0 A |
| 3.3 V DC Output | 2.0 A |
| Combined 5 V DC and 3.3 V DC Output Power | 10 W maximum combined |
| Inrush Current at 12 V DC Input | 12 A peak maximum for 5 ms |
| Inrush Current at 24 V DC Input | 20 A peak maximum for 5 ms |
| Input Protection | Internally fused, non-replaceable |
| Overvoltage Protection | Output protected at 110% to 120% |
| Hold-Up Time | 5 ms under specified full-load and minimum-input conditions |
| Operating Temperature | -40 to 60°C without derating; 60 to 70°C with derating |
| Storage Temperature | -40 to 70°C |
| Relative Humidity | 5 to 95%, non-condensing |
| Mounting | Compatible DeltaV M-Series power/controller or power carrier |
| Status Indicators | Green DC power input LED and red error LED |
| Alarm Output | Normally open relay contact |
| Dimensions | 160.6 × 41.8 × 139.1 mm |
| Weight | 1.36 kg |
The Emerson VE5109 converts incoming DC power into the voltage rails required by DeltaV M-Series control hardware. Its internal conversion and regulation circuitry maintains the specified outputs within the operating limits of the supply.
12 V DC or 24 V DC Bulk Power → VE5109 DC/DC Conversion and Regulation → 12 V DC I/O Power + 5 V DC and 3.3 V DC Controller Power → DeltaV M-Series Hardware
When the input is 12 V DC, the available 12 V DC output current differs from the rating available with a 24 V DC input. The supply can deliver up to 13 A on the 12 V DC output at temperatures from -40 to 60°C with a 12 V DC input. With a 24 V DC input, the corresponding rating is up to 8.0 A under the same temperature conditions. The available current decreases at higher operating temperatures, so system load calculations must use the rating applicable to the actual input voltage and ambient temperature.
The controller’s 5 V DC and 3.3 V DC rails support the electronic circuitry required for controller operation. Their combined output power is limited to 10 W, even though each rail has an individual current rating of 2.0 A. The 12 V DC output supports the I/O interface power bus within the limits of the installed carrier and system configuration.
The module also monitors specified output conditions. When the 5 V DC and 3.3 V DC outputs fall outside their permitted tolerances, the red error indicator provides a local indication and the alarm relay changes state. This helps maintenance personnel distinguish a power-supply problem from certain faults originating in controller or I/O hardware.
If the incoming bulk power fails, the supply’s hold-up characteristics and fault-detection provisions affect the system response. The VE5109 is therefore one element of the overall power architecture; uninterrupted operation depends on the input source, supply configuration, redundancy arrangement, connected load, and the requirements of the installed DeltaV system.
The VE5109 occupies the system-power layer of a DeltaV M-Series installation. It converts plant DC power into the regulated voltages required by the controller and I/O interface hardware, with power distributed through the compatible carrier’s internal buses.
Plant DC Power Source → VE5109 System Power Supply → Power/Controller Carrier → DeltaV Controller and I/O Interfaces → Process Control and Monitoring
| System Element | Function |
|---|---|
| Plant DC Power Source | Supplies the 12 V DC or 24 V DC input required by the power supply |
| VE5109 | Converts incoming DC power into regulated system voltage rails |
| Power/Controller Carrier | Provides module mounting and internal power distribution buses |
| DeltaV Controller | Executes configured control strategies and coordinates process operations |
| M-Series I/O Interfaces | Connect controller-side hardware to the installed I/O subsystem |
| I/O Cards | Acquire process input signals or provide output signals according to their functions |
| Field Devices | Measure process conditions or perform commanded actions |
| Field Power Distribution | Supplies field-side power according to the system design |
| Power Alarm Circuit | Communicates specified power-supply fault conditions through relay contacts |
| Operator Workstation or HMI | Presents process values, alarms, and control information to operators |
The VE5109 does not execute process-control logic or replace the controller. Its role is to maintain the required electrical supply for the installed control hardware. When planning an expansion, the available output capacity, carrier ratings, total connected load, and redundancy requirements must be evaluated together.
| Application | Typical Use |
|---|---|
| Distributed Control Systems | Supplying DeltaV M-Series controllers and I/O interfaces |
| Chemical Processing | Supporting controller and I/O power in process automation cabinets |
| Oil and Gas Facilities | Providing system power for compatible process control installations |
| Petrochemical Plants | Maintaining the DC power infrastructure used by process monitoring and control equipment |
| Power Generation | Supplying control-system electronics for plant monitoring and operational control |
| Water and Wastewater Treatment | Supporting M-Series control hardware used in treatment and utility processes |
| Industrial Manufacturing | Powering compatible control and I/O subsystems in automated production facilities |
| Refinery Control Systems | Supporting distributed control hardware in established process-control architectures |
| Control Cabinet Expansion | Adding system power capacity when the existing power budget and carrier configuration permit |
| Redundant Control Installations | Serving as a component in an appropriately engineered system-power redundancy arrangement |
| Component | Function |
|---|---|
| DeltaV M-Series Power/Controller Carrier | Provides the mounting position and internal power buses for the supply and controller |
| DeltaV M-Series Controller | Executes the configured process-control strategy |
| DeltaV M-Series I/O Interface Carrier | Supports connection and power distribution for the associated I/O subsystem |
| DeltaV M-Series I/O Cards | Interface with field inputs and outputs according to the installed card type |
| 12 V DC Bulk Power Source | Supplies the VE5109 when the system is configured for 12 V DC input |
| 24 V DC Bulk Power Source | Supplies the VE5109 when the system is configured for 24 V DC input |
| Power Distribution Wiring | Carries the input supply from the plant DC source to the module |
| System Power Alarm Circuit | Receives the power-supply relay status for monitoring or alarm purposes |
| Field Power Distribution Hardware | Supplies field-side devices according to the installation design |
| DeltaV System Documentation | Defines load calculations, carrier arrangements, wiring, and maintenance requirements |
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Emerson VE5109 | DeltaV M-Series DC to DC System Power Supply | Specified model for this product entry |
| Emerson VE5009 | DeltaV M-Series DC to DC System Power Supply with Marine Certification | Related supply variant for installations requiring the applicable marine certification |
| DeltaV M-Series Controllers | Process Control Controller | Executes configured process-control strategies |
| DeltaV M-Series I/O Interfaces | I/O Interface Hardware | Connects controller hardware to the M-Series I/O subsystem |
| DeltaV M-Series I/O Cards | Input/Output Modules | Interfaces with process instrumentation and control devices |
| DeltaV M-Series Power/Controller Carriers | Power and Controller Mounting Hardware | Houses the compatible system power supply and controller |
The VE5109 supplies regulated DC power to DeltaV M-Series controllers and I/O interfaces. It accepts 12 V DC or 24 V DC input power and provides 12 V DC for I/O interface power along with 5 V DC and 3.3 V DC for controller electronics. It installs in a compatible DeltaV power/controller carrier.
The VE5109 supports both nominal input voltages, but the available 12 V DC output current depends on the input voltage and operating temperature. At -40 to 60°C, the specified 12 V DC output rating is up to 13 A with a 12 V DC input and up to 8.0 A with a 24 V DC input. Engineers should use the applicable rating when calculating system power requirements.
Replacement suitability depends on the original model, input voltage, output requirements, carrier configuration, and system certifications. The VE5109 is the non-marine-certified model listed for the M-Series DC-to-DC system power supply. A related model, such as the VE5009, has marine certification; the two should not be treated as interchangeable for every installation without confirming the applicable system requirements.
The green LED indicates that DC input power is applied and the internal fuse/diode is functioning. The red error LED indicates that the 5 V DC and 3.3 V DC outputs are outside their specified tolerances. If the red LED is illuminated, technicians should check the input supply, output conditions, connected load, and relevant wiring before determining whether the power supply needs replacement.