When it comes to servo products, Japanese brands dominate the current motion control market, while European servo brands seem to embody completely different concepts and characteristics from Japanese products.
Functionality Comparison of Three Major Japanese Servo Brands
Among Japanese servo brands, the most representative products are YASKAWA's Σ (SIGMA), Mitsubishi's MELSERVO, and Panasonic's MINASA series. On one hand, they have a huge number of installed users, with each product holding approximately 15% of the Chinese servo control market share. This means that the combined annual revenue of these three series accounts for almost half of the entire market. On the other hand, these three series originated in the early 2000s, undergoing several generations of technological upgrades, accumulating excellent user reputation, and serving as a long-term benchmark for competitors in the industry.
Currently, the latest flagship products of these three brands are: YASKAWA's ∑-7, Mitsubishi's MELSERVOMR-J4, and Panasonic's MINASA6.
From the product's appearance, they all belong to the single-unit independent structure, that is, each servo drive includes a rectifier unit and an inverter circuit.
In terms of motion control functions, the MINASA6 has a speed loop frequency response of 3.2kHz, the Σ-7 has 3.1kHz, and the MR-J4 has 2.5kHz.
All three brands place great emphasis on the user experience in motion control tuning, a prominent characteristic of Japanese servo technology. Looking at key performance indicators we typically focus on, the Σ-7 and MINASA6 perform slightly better than the MR-J4 in this regard. For example, all three products offer a second encoder interface option to achieve fully closed-loop control of motion transmission. However, the implementation methods differ: the MINASA6 and MR-J4 are differentiated by different product models, while the Σ-7 provides a separate auxiliary encoder module as a complementary accessory.
Analysis of the characteristics of traditional European servo products
In terms of the appearance of the driver, most mainstream European servo drives adopt a "tall, deep, and thin" book-like design and widely support seamless parallel device styles.
In terms of power input, European servo products mostly use AC three-phase 400V voltage as the power source for the drive system; at the same time, they often use common DC bus technology to redistribute the power supply of the multi-axis system.
In terms of power output, European servo motors generally have slightly higher output power than Japanese brands. Japanese products on the market are mainly concentrated in the power range of 400W to 2kW, while European servo motors are more often in the 1.5kW to 5kW range. Furthermore, when matching drives with motors, European servo motors typically display the output characteristics of their different combinations for users to choose from.
In terms of electrical connection between drive and motor, traditional European servo systems tend to use DIN-type rotatable metal connectors, and most of them use sine and cosine differential signals of protocols such as EnDat and Hiperface as "intelligent" servo response, with resolution ranging from hundreds of thousands to millions, single or multiple turns (multiple turns counting does not require batteries); however, in recent years, European servo responses have begun to show a gradual trend towards digital responses.
Another characteristic of European servo products is their long-standing tradition of using motion control buses. In terms of individual servos, the advantage of European products lies more in the control system connected via a bus. Furthermore, European brands were among the first to propose and integrate safety features into their products.
Regarding product functionality, European servo brands seem to exhibit a completely different philosophy from Japanese products. For example, in product marketing, they emphasize the overall user experience brought by the product's features, rather than focusing on specific functional indicators; in application settings, they offer users more parameter options, but don't prioritize the effectiveness of user-friendly operations such as adaptive tuning. They tend to make users pay for the overall functional improvement that their system design brings to the device, rather than focusing on the recognition of certain product-level functional indicators.
In summary, the characteristics of European servo products mentioned above are still closely related to the user markets they have long served. For example, the European market has historically been a "producer" of high-quality large and medium-sized electromechanical equipment. These products are generally characterized by multiple drive shafts, high power, complex electromechanical structures, and a relatively high degree of customization. This is quite different from the standardized "small machine" approach that Japanese brands have always excelled at. Furthermore, differences in professional applications and usage habits also play a significant role.
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