Description
Emerson DeltaV VE5008 | M-Series 24/12 VDC DC/DC System Power Supply
Product Introduction
A DeltaV cabinet can have perfectly healthy controllers and I/O cards yet still experience system faults when the underlying system power supply is aging, overloaded, or improperly matched to the carrier. The Emerson DeltaV VE5008 is an M-series DC/DC system power supply designed to provide regulated power to compatible DeltaV system electronics and field-power architecture. Emerson documentation identifies the enhanced M-series supply family as supporting both 12 VDC and 24 VDC bulk input arrangements.
The VE5008 provides +12 VDC system power together with +5 VDC and +3.3 VDC auxiliary outputs. Its architecture includes power-failure indication, system/field power isolation, modular carrier mounting, and internal protection. For DCS maintenance and legacy DeltaV system migration, the exact carrier, input-power arrangement, load calculation, and hardware revision should be checked rather than selecting a replacement based only on the VE5008 model number.
Key Technical Specifications
| Parameter | VE5008 Specification |
|---|---|
| Product Model | VE5008 |
| Manufacturer / Brand | Emerson DeltaV |
| Series | DeltaV M-series |
| Product Type | Enhanced DC/DC system power supply |
| Input Voltage | 12 VDC or 24 VDC |
| 12 VDC Input Rating | -4% to +5%, 14.8 A |
| 24 VDC Input Rating | ±20%, 6.1 A |
| 12 VDC Output @ 12 VDC Input | 13 A, -40 to +60°C |
| 12 VDC Output @ 24 VDC Input | 8.0 A, -40 to +60°C |
| 12 VDC Output @ 12 VDC Input, 60–70°C | 10 A |
| 12 VDC Output @ 24 VDC Input, 60–70°C | 6.0 A |
| +5 VDC Output | 2.0 A |
| +3.3 VDC Output | 2.0 A |
| Combined +5/+3.3 VDC Power | 10 W maximum |
| Inrush Current | 12 A peak / 5 ms at 12 VDC input; 20 A peak / 5 ms at 24 VDC input |
| Input Protection | Internal, non-replaceable fuse |
| Overvoltage Protection | 110–120% of output |
| Hold-Up Time | 5 ms within 5% of nominal at full load and minimum input |
| Operating Temperature | -40 to +60°C without derating; +60 to +70°C with derating |
| Storage Temperature | -40 to +70°C |
| Relative Humidity | 5–95%, non-condensing |
| Airborne Contaminants | ISA-S71.04-1985 Class G3; conformal coating |
| Alarm Contact | 2-wire normally-open relay |
| Alarm Contact Rating | 2.0 A at 30 VDC; 2.0 A at 250 VAC |
| Main Mounting Architecture | DeltaV M-series power/controller carriers |
The electrical ratings above come from Emerson’s M-series enhanced DC/DC system power-supply documentation.
Major Features / Advantages
1. Dual 12/24 VDC input architecture
was designed for DeltaV installations using either 12 VDC or 24 VDC bulk power. At 12 VDC input, the main +12 VDC output is rated up to 13 A under the normal -40 to +60°C operating range. With 24 VDC input, the +12 VDC output is rated up to 8 A. Above 60°C, the output must be derated.
This matters when replacing older DeltaV cabinet hardware because the incoming bulk-power arrangement cannot be assumed from the output voltage alone.
VE5008
2. Multiple regulated system outputs
The supply provides the main +12 VDC rail as well as +5 VDC and +3.3 VDC outputs. The latter two outputs are each rated at 2 A, with a combined power limit of 10 W. These rails support the electronics associated with the DeltaV M-series architecture rather than functioning as general-purpose plant DC outputs.
3. System and field power isolation
The M-series power architecture provides isolation between system power and field power when the appropriate common bulk-power arrangement is used. This is important in DCS cabinets because field-side disturbances should not simply be assumed to be equivalent to a controller power fault.
4. Built-in fault indication
The supply includes a DC-power LED and an error indication. DeltaV documentation describes the error condition as associated with the +5 VDC and +3.3 VDC outputs being outside their specified tolerance. A relay output is also provided for power-status monitoring.
For troubleshooting, that relay is useful because a cabinet-level alarm can reveal a power problem before individual I/O cards are unnecessarily replaced.
5. Designed for modular DeltaV cabinet installation
is intended for the DeltaV M-series carrier architecture rather than DIN-rail installation as a generic standalone converter. Documentation describes mounting in supported power/controller carrier positions.
That distinction is important when sourcing a replacement: matching the electrical specification alone is not enough. The mechanical carrier interface and system-power arrangement also have to match.
Application Scenarios & Field Pain Points
- DeltaV M-series control cabinets: Provides system power for compatible controller and I/O carrier configurations.
- Legacy DeltaV maintenance: Suitable for maintaining installed -based systems where the original power architecture remains in service.
- RS3 I/O integration: Emerson-related DeltaV interface documentation identifies as the required DeltaV system power supply for specific RS3 I/O interface configurations.
- DCS cabinet refurbishment: Useful when replacing an aging system power module while retaining the existing M-series carrier and bulk-power design.
Field note: If a installation shows intermittent controller resets or multiple I/O faults at the same time, don’t start by replacing individual I/O cards. First measure the incoming bulk DC voltage under load, inspect the power connector, check the system-power alarm, and compare actual cabinet loading with the DeltaV power calculation. A supply that looks normal at no load can behave differently when the cabinet reaches operating load.
Related Products
- VE5009 — Enhanced M-series DC/DC system power supply and the more efficient successor/replacement path for applicable installations.
- VE5001 — DeltaV 115/220 VAC AC-to-DC system power supply.
- VE5005 — DeltaV bulk 24 VDC-to-12 VDC power supply.
- VE5011 — DIN-rail-mounted bulk AC-to-24 VDC power supply.
- VE5012 — DIN-rail-mounted bulk AC-to-12 VDC power supply.
- VE3008 — DeltaV M-series MQ controller used in compatible system architectures.
- VE3007 — DeltaV M-series controller associated with legacy migration architectures.
DeltaV documentation and product catalogs identify as the M-series 24/12 VDC system power supply and list VE5001, VE5005, VE5011, and VE5012 as related system/bulk-power products.
vs. VE5009
This is the comparison procurement teams should pay attention to:
| Item | VE5009 | |
|---|---|---|
| Function | M-series DC/DC system power supply | Enhanced M-series DC/DC system power supply |
| Input | 12/24 VDC | 12/24 VDC |
| 12 VDC Output | Up to 13 A at normal temperature | Up to 13 A at normal temperature |
| 24 VDC Input Output | Up to 8 A | Up to 8 A |
| Architecture | Legacy M-series supply | Enhanced design |
| Replacement Relationship | Original/legacy supply | Documented replacement path for applicable installations |
Emerson specifically states that VE5009 is more efficient than and can replace without recalculating bulk-power requirements solely because of the supply change. If additional I/O is being installed at the same time, however, the increased I/O load still has to be accounted for.
Engineer’s Guide — Field Pitfalls to Avoid
1. Don’t confuse with VE5009
They perform closely related functions, but the part numbers represent different supply generations. Emerson identifies VE5009 as the more efficient replacement path. Don’t substitute one for the other solely because both are described as 24/12 VDC DeltaV power supplies.
2. Verify the exact cross-reference
Procurement databases associate with identifiers including KJ1501X1-BC2 and 12P2186X022/X032/X042. These should be treated as procurement cross-references, not proof that every assembly bearing one of those identifiers is identical in every revision or configuration.
3. Check temperature derating
The headline 8 A or 13 A output rating applies through +60°C. From +60°C to +70°C, the published +12 VDC ratings fall to 6 A with 24 VDC input and 10 A with 12 VDC input. Cabinet ambient temperature therefore belongs in the power calculation.
4. Check the bulk supply, not just the
The current entering depends on the selected bulk voltage. A cabinet retrofit can therefore change the demand on the upstream DC system even if the replacement module itself appears electrically compatible.
5. Don’t use a generic DC/DC converter as a substitute
The DeltaV supply incorporates carrier mounting, system-power distribution, monitoring, protection, and system/field isolation functions. A generic converter with similar voltage and current numbers does not automatically reproduce those functions.
FAQ
What is Emerson ?
is an Emerson DeltaV M-series 24/12 VDC DC/DC system power supply. It converts bulk 12 VDC or 24 VDC power into regulated system rails used by compatible DeltaV M-series hardware.
What voltage can accept?
It supports 12 VDC and 24 VDC input. The published ratings are 12 VDC at -4%/+5% and 24 VDC at ±20%.
What is the main output of ?
The principal system output is +12 VDC. The supply also provides +5 VDC and +3.3 VDC auxiliary rails. At -40 to +60°C, the +12 VDC output is rated at 13 A with 12 VDC input and 8 A with 24 VDC input.
Can replace ?
For applicable DeltaV installations, Emerson documents as a replacement for and notes that its higher efficiency avoids a bulk-power recalculation caused solely by changing the supply. This should not be interpreted as universal plug-and-play compatibility; carrier configuration, wiring, certifications, and the overall load still need verification.
Is a controller or I/O module?
No. It is a system power supply. It supports the power architecture serving DeltaV control and I/O hardware rather than performing controller or signal-processing functions.
What should I verify before purchasing a ?
At minimum, verify the complete part number and revision, carrier compatibility, 12/24 VDC bulk-power configuration, output loading, temperature environment, alarm wiring, and actual physical condition. For an installed DCS, compare the replacement unit against the cabinet drawings and hardware configuration before treating a cross-reference as a guaranteed drop-in replacement.
