Description
B&R 8V1090.00-2 ACOPOS Servo Drive
Product Introduction
Machine builders using B&R motion control often need a servo drive that can handle a meaningful motor load without moving to a larger cabinet architecture. The B&R 8V1090.00-2 is an ACOPOS servo drive rated at 4 kW and 8.8 A, designed for three-phase industrial motor applications. Its modular chassis provides four plug-in slots, allowing the drive configuration to be adapted with encoder, communication, and I/O interfaces appropriate to the machine.
The drive accepts 3-phase 400–480 VAC ±10%, with 3-phase 230 VAC ±10% also specified, and includes an integrated line filter, braking resistor, and electronic safe restart inhibit. Optional modules include POWERLINK V2, CAN, resolver, EnDat, HIPERFACE, BiSS, and incremental/SSI encoder interfaces. This makes the B&R 8V1090.00-2 particularly relevant to legacy machine maintenance, ACOPOS replacement work, and motion-control system upgrades where the installed plug-in module configuration must be preserved.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | B&R Industrial Automation |
| Model | 8V1090.00-2 |
| Product Family | ACOPOS 8V |
| Product Type | Servo Drive |
| Rated Motor Power | 4 kW |
| Continuous Output Current | 8.8 A |
| Maximum Installed Load | 10 kVA |
| Mains Input | 3 × 400–480 VAC ±10%; 3 × 230 VAC ±10% |
| Input Frequency | 50/60 Hz ±4% |
| DC Bus Capacitance | 470 µF |
| 24 VDC Control Supply | 24 VDC ±25% |
| 24 VDC Consumption | Max. 2.5 A + motor holding-brake current |
| Plug-in Module Slots | 4 |
| Integrated Line Filter | Yes, EN 61800-3 Category C3 |
| Integrated Braking Resistor | Yes |
| Electronic Safe Restart Inhibit | Yes |
| Protection Rating | IP20 |
| Operating Temperature | 5 to 40°C nominal; 55°C maximum |
| Storage Temperature | -25 to 55°C |
| Transport Temperature | -25 to 70°C |
| Relative Humidity | 5–85% operating |
| Installation Elevation | 0–500 m nominal; 2000 m maximum |
| Dimensions (W × H × D) | 70.5 × 375 × 235.5 mm |
| Weight | 4.4 kg |
| Mounting Orientation | Vertical hanging or horizontal, face up |
| Certifications | CE, UKCA, cULus, KC |
These values are taken from B&R’s current product documentation for the exact 8V1090.00-2 material number.
Application Scenarios & Engineering Considerations
Packaging and Material-Handling Machinery
The 4 kW rating places the 8V1090.00-2 in a useful range for substantial machine axes rather than small auxiliary positioning tasks. Depending on the motor and control configuration, applications can include conveyors, feed mechanisms, rotary tooling, indexing systems, and other machine axes.
8V1090.00-2
High-Duty Servo Motion
The ACOPOS architecture is modular. The base drive provides the power stage while the installed plug-in modules determine functions such as encoder feedback and fieldbus connectivity. B&R documents optional POWERLINK V2, CAN, resolver, EnDat, HIPERFACE, BiSS, and incremental/SSI interfaces for this model.
That distinction matters during replacement. The material number 8V1090.00-2 identifies the base drive, but the machine’s actual motion function can depend heavily on the modules installed in its four slots.
Legacy B&R Machine Maintenance
For an older production machine, replacing the complete motion-control architecture simply because a servo drive has failed can create unnecessary engineering work. An exact 8V1090.00-2 replacement can preserve the existing ACOPOS architecture when the remaining hardware and Automation Studio project are compatible.
Before approving the replacement, compare the original drive’s plug-in modules, motor data, feedback interface, firmware/hardware revision, and machine project.
Motion-Control System Migration
The 8V1090.00-2 can also be relevant when maintaining a B&R system during a phased migration. The practical limitation is that the drive should not be treated as an isolated component. Encoder feedback, communication topology, motor parameters, braking circuit, and safety wiring all have to remain consistent with the machine design.
Related Products
- B&R 8V1010 Series — Smaller ACOPOS servo-drive models for lower-power applications.
- B&R 8V1022 Series — ACOPOS servo drives in the same general drive family.
- B&R 8V1045 Series — Related ACOPOS drive size within the 8V platform.
- B&R 8AC114.60-2 — ACOPOS POWERLINK V2 plug-in communication module.
- B&R 8AC110.60-3 — ACOPOS CAN interface plug-in module.
- B&R 8AC122.60-3 — Resolver interface module, 10 kHz.
- B&R 8AC123.60-1 — Incremental encoder and SSI absolute encoder interface.
- B&R 8AC120.60-1 — EnDat encoder and sine incremental encoder interface.
- B&R 8AC121.60-1 — HIPERFACE interface module.
- B&R 8AC125.60-1 — BiSS/SSI/SinCos encoder interface.
B&R lists these modules as optional accessories for the exact 8V1090.00-2.
Engineer’s Guide: Field Pitfalls to Avoid
1. Match the plug-in modules, not just the drive number
This is the first thing I would check on a replacement. The base 8V1090.00-2 has four plug-in slots, and B&R offers multiple encoder and communication modules for those positions.
A replacement base drive without the required feedback or communication module may power up perfectly and still be unusable in the machine.
2. Verify the mains class
The specified mains input is 3 × 400–480 VAC ±10%, with 3 × 230 VAC ±10% also supported. Do not confuse this with a 230 VAC single-phase drive simply because 230 V appears in the specification.
3. Check the motor and feedback combination
The 4 kW rating alone does not establish motor compatibility. Confirm motor rated current, feedback type, encoder/resolver module, motor cable arrangement, braking requirements, and the parameters stored in the machine’s Automation Studio project.
4. Respect the 24 VDC control supply
The drive also requires a 24 VDC supply with an allowable range of ±25%, and B&R specifies maximum consumption of 2.5 A plus the motor holding-brake current.
Do not size the control supply from the 4 kW motor rating; the 24 VDC circuit has its own requirements.
5. Do not overlook thermal installation
B&R specifies 5–40°C as the nominal operating range and 55°C as the maximum. The drive is IP20, so cabinet airflow and contamination control are part of the installation design.
If the original cabinet has deteriorated cooling fans or blocked filters, replacing the drive without correcting the thermal problem can simply repeat the failure.
6. Check the safe restart circuit
The 8V1090.00-2 includes an electronic safe restart inhibit. The safety circuit should be tested as part of commissioning rather than assuming that transferring the old wiring automatically reproduces the intended safety behavior.
FAQ
What is B&R 8V1090.00-2?
It is a B&R ACOPOS servo drive rated for 4 kW and 8.8 A, intended for three-phase industrial motion-control applications. The exact B&R description specifies integrated line filtering, braking-resistor functionality, and electronic safe restart inhibit.
What input voltage does the 8V1090.00-2 use?
The specified mains input is 3 × 400–480 VAC ±10%, with 3 × 230 VAC ±10% also supported. The input frequency is 50/60 Hz ±4%.
What is the power rating?
The 8V1090.00-2 is rated at 4 kW, with a continuous motor current rating of 8.8 A.
Does it support POWERLINK?
Yes. B&R lists 8AC114.60-2, an ACOPOS POWERLINK V2 plug-in module, as an optional module for the 8V1090.00-2. POWERLINK support therefore depends on the actual module installed in the drive.
Does the drive support encoder feedback?
Yes, through optional plug-in modules. B&R lists EnDat, HIPERFACE, resolver, incremental/SSI, and BiSS-related interfaces among the available modules. The correct module must match the motor feedback device.
What is the protection rating?
The specified enclosure protection is IP20. This means the drive is intended for suitable cabinet installation rather than exposed field mounting.
Can another ACOPOS drive replace 8V1090.00-2?
Not simply because it belongs to the ACOPOS family. Compare input voltage, continuous current, motor power, physical dimensions, installed plug-in modules, feedback interface, braking arrangement, firmware/hardware compatibility, and the machine’s Automation Studio project before substitution.
What should be checked when buying a replacement?
Record the complete 8V1090.00-2 material number, inspect the installed plug-in modules, verify the hardware revision, check the connector condition, and confirm the motor/encoder configuration. For used or refurbished equipment, actual inventory condition and functional test evidence should be verified before installation.
