Infranor PACHP-SF Safety Servo Drives Review: Specs, Price and Applications
Updated: 4 days ago
PACHP-SF adds advanced safety-motion functions to the PACHP servo platform. Infranor distinguishes SIL3 STO from the -SF version’s advanced SIL2 motion functions. This distinction matters: a drive does not become uniformly SIL3 for every function because STO has that rating.
Quick Verdict
Consider the Safety variant when the machine requires supported monitored-motion functions and a compatible safety-controller/feedback architecture. Specify and validate the actual function chain; a component’s safety capability is one part of the complete machine design.
Infranor PACHP-SF Safety Servo Drives at a Glance
Specification | Details |
Platform | Panel-mounted Safety servo drive for applicable rotary / linear motors |
Standard function | SIL3 Safe Torque Off in current manufacturer description |
Advanced scope | -SF adds supported SIL2 motion functions |
Listed function examples | SOS, SBC, SDI, SLS, SS1, SS2 and SLP; actual configuration/documentation governs |
Safety network | Safety over EtherCAT / FSoE arrangement with compatible safety PLC |
Feedback | Approved motor/encoder arrangement for the intended function |
Tools | Optio Drive Assistant and Safety Tool in current manufacturer description |
Price | Request a quote for the complete validated safety-motion component scope |
Design and Engineering Assessment
Safety functions address different behavior. STO removes commanded torque; safely limited speed monitors a speed condition; safe brake control depends on a suitable brake arrangement. None should be treated as a universal substitute for the others.
FSoE is a functional-safety communication arrangement, not a blanket statement about plant cybersecurity. Configure the actual safety controller, network addresses and approved feedback under the applicable manuals.
The required stopping distance and intervention mode depend on the machine, load, sensors and complete control chain. A drive certificate does not by itself establish safe human access around a moving machine.
Specify the Safety Function Chain
List the required monitored quantities and reactions, then identify the approved PLC, drive, motor/encoder and brake scope. Resolve the actual SIL/function documentation rather than applying a portfolio-level label.
Distinguish the Safety product’s hardware, dimensions, firmware and feedback from the standard drive. Similar power ratings do not make the products interchangeable.
Validate and Maintain
Commission ordinary motion and the safety configuration as linked but distinct tasks. Validate the actual stopping/monitoring behavior under representative load and fault conditions.
Preserve configuration signatures, approved component identity and restoration procedures. After a replacement or parameter change, repeat the validation needed for the affected functions.
Applications and Selection
Machines requiring a documented and validated safety-motion chain using the specific PACHP Safety configuration.
For Infranor PACHP-SF Safety Servo Drives, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Advanced monitored-motion functions
Documented STO versus advanced-function rating distinction
FSoE and dedicated safety configuration tools
Limitations
Whole safety chain must be matched
Functions have different behavior and ratings
Component capability does not establish complete machine safety
Who Should Consider Infranor PACHP-SF Safety Servo Drives?
Consider Infranor PACHP-SF Safety Servo Drives for machines requiring a documented and validated safety-motion chain using the specific PACHP Safety configuration. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
Infranor PACHP-SF Safety Servo Drives FAQ
Are all PACHP-SF functions SIL3?
No. The current manufacturer description separates SIL3 STO from advanced SIL2 -SF functions.
Is STO the same as safely limited speed?
No. They address different motion/safety behavior.
Does safe brake control prove any brake is suitable?
No. The actual brake and complete holding arrangement must be appropriate.
Does FSoE guarantee cybersecurity?
It addresses functional-safety communication; plant cybersecurity is a separate design concern.
Can standard PACHP feedback always be reused?
Only when approved for the selected Safety function and configuration.
Does a drive certificate approve the whole machine?
No. The complete application requires its own design and validation.
What should be retained for service?
Approved hardware/firmware identity, safety configuration and required restoration/validation records.
What should acceptance demonstrate?
Actual loaded stopping/monitoring behavior and the required response to relevant faults.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.
