Variable Frequency Drives (VFDs) are essential in modern industrial automation. They regulate motor speed and save energy. But for international traders, system integrators, and repair firms, selecting the right model—and knowing when to repair, replace, or upgrade—is not just technical work; it’s business-critical.
KaiRock, as a professional industrial parts supplier based in China, specializes in global sourcing of automation brands like Siemens, Yaskawa, Schneider, Delta, ABB, Honeywell, Omron, Estun, and Inovance. We help our B2B partners reduce costs, shorten delivery times, and manage replacement or upgrade decisions effectively.
Application Type
Constant torque loads → Siemens MM440, ABB ACS800
Variable torque (fans/pumps) → ABB ACS510, Siemens MM430, Schneider ATV61
Motor Current over Power
Always size your VFD based on motor current, not just kW
Environment
For harsh environments (heat, humidity, dust), choose higher protection grade or add filters
Brand and Standardization
Standardize on top brands like Siemens, Yaskawa, ABB
Use local alternatives like Estun or Inovance to optimize cost
Repair, Replace or Upgrade?
KaiRock offers comprehensive service support to help you determine the next steps for your equipment:
- 1. Replace with the Same Model
- Rapid recovery
- Simplified parameter setup
- No changes required to I/O interfaces
2. Upgrade to a Newer or Different Model
- Suitable for discontinued older models or customer upgrade requests
- Supports remote communication and digital control
- KaiRock assists with model selection, parameter configuration, and installation integration
3. Repair the Existing Unit
- Cost-effective for minor damage
- KaiRock provides authorized repair and testing services with [Repair Service] and [Parts Exchange] options
Why Work with KaiRock?
We don’t just sell products—we help customers solve entire supply chain challenges:
- Parts Sales: Covering multi-brand VFD hosts, modules, keyboards, drivers, filters, etc.
- Exchange Service: Supports same-model replacements and model upgrade recommendations
- Repair Service: Provides maintenance for aging equipment and fault analysis
- Technical Support: Assists customers in making selection and maintenance decisions
We collaborate with numerous global integrators and repair service providers, accumulating extensive field experience and cross-brand compatibility solutions. We deeply understand your time constraints when serving end customers and your need for standardized spare parts.
Practical Advice for Traders & Integrators
- Stock common models like ABB ACS510, Yaskawa GA700, Siemens G120
- Combine [Repair Service] with [Parts Sales] to give clients flexibility
- Offer upgrade advice when models are discontinued
KaiRock is more than a parts supplier—we are your technical partner. Whether your client needs urgent replacement, cost-effective repair, or a long-term upgrade strategy, we support you with fast sourcing, expert consultation, and real industrial experience.
