ETEL Accuret MODULAR 300/400/600 Controller Selection Guide

ETEL Accuret MODULAR 300/400/600 Controller Selection Guide

In the field of high-precision motion control, ETEL's Accuret MODULAR series has become the preferred solution for industries such as semiconductor manufacturing, precision machine tools, and laser processing due to its modular architecture, powerful control algorithms, and flexible power configuration. This series covers three voltage levels of 300V, 400V, and 600V, each of which provides controllers and matching power modules with multiple current specifications to adapt to different application scenarios from light load single axis to heavy load multi axis. This article is based on official technical data and conducts in-depth analysis from five dimensions: hardware specifications, control performance, advanced functions, communication interfaces, and selection logic, providing engineers with a systematic technical reference.

Series Overview and Positioning

The Accuret MODULAR series is essentially a combined drive system designed to separate the position controller (model EA-P2M) from the power module (model EA-S0M or EA-SOM). The controller is responsible for closed-loop computation, trajectory generation, and I/O management, while the power module is responsible for bus voltage conversion and power output. This separation design brings two major advantages: firstly, it can independently upgrade the power capacity according to the load demand, without the need to replace the control board; Secondly, the same controller platform can be shared, and different bus voltages (300V, 400V, or 600V levels) can be adapted by simply replacing the power module, greatly reducing spare parts inventory and system modification costs.

The core differences among the three sub series lie in the DC bus voltage range and maximum output current:

300 series: Bus voltage of 48-340 VDC, suitable for low-voltage servo systems, typical applications such as small linear motor platforms and high-speed mounting heads.

400 series: Bus voltage of 48-400 VDC, covering a wider range of AC inputs (single-phase or three-phase 100-400 VAC), is currently the most commonly used version in industrial sites.

600 series: Bus voltage of 200~600 VDC, only supports three-phase 142~424 VAC input, designed specifically for high-power, high-voltage large and medium-sized equipment, such as heavy-duty gantry milling machines and large curved printing machines.

The control core (processor, algorithm, sampling period) of each series is completely consistent, ensuring cross series software compatibility. Engineers only need to focus on power matching.

Detailed specifications of controller module

1. 300V level controller (EA-P2M-300)

This level offers two controller models:

EA-P2M-300-4/7.5A: Each axis continuously outputs 4 Arms, with a peak pulse current of 7.5 Arms (lasting for several milliseconds). The PWM switching frequency is fixed at 10 kHz (it can also be configured to 20 kHz to reduce audio noise, but slightly lower the maximum output capacity).

EA-P2M-300-07/15A: Continuous output of 7.5 Arms, peak output of 15 Arms. This model is suitable for driving medium inertia motors or acceleration and deceleration scenarios that require short-term overload.

Both controllers are designed with dual axis, with independent current loops on each axis, which can simultaneously drive two linear or rotary motors. The power input is a DC bus with rated currents of 8 A (4/7.5A model) and 10 A (07/15A model), and an external rectifier power supply that meets the voltage range is required. The controller is equipped with a safety power relay that can quickly cut off the output bridge arm in case of a fault, meeting the safety requirements of EN 61800-5-1.

2. 400V level controller (EA-P2M-400)

This level offers three models, covering a wider current gradient:

EA-P2M-400-05/10A: Continuous 5 Arms, peak 10 Arms.

EA-P2M-400-10/20A: continuous 10 Arms, peak 20 Arms.

EA-P2M-400-15/40A: continuous 15 Arms, peak 40 Arms.

All three controllers support adjustable PWM frequencies of 10 kHz or 20 kHz, and the maximum bus input current is 30 Arms (all models are the same). However, the actual available current is limited by heat dissipation and internal components, so the heavy-duty model (15/40A) requires better heat dissipation conditions. In terms of weight, the first two models are 3.3 kg and the third model is 4 kg, with the main difference being the size of the power module. The 400 series controller is the most popular in industrial automation, and its voltage range is compatible with the vast majority of 380 VAC industrial power grids (about 537 VDC after three-phase rectification, but the upper limit of the controller is 400 VDC, so it is important to note that the front-end voltage should not exceed the limit, and it is recommended to use below 380 VAC in practice).

3. 600V level controller (EA-P2M-600)

This level only offers one standard model:

EA-P2M-600-15/40A: continuous 15 Arms, peak 40 Arms, PWM frequency can be set to 5 kHz or 10 kHz (switch loss is lower at 5 kHz, suitable for higher bus voltage). Its bus voltage range is 200~600 VDC, which can be directly used for 600 V DC links. The AC input requires three-phase 142~424 VAC (50/60 Hz), maximum input current of 10 A, and peak surge current of 15 A (@ 424 VAC). The weight is 4 kg, which is the same as the 400 level heavy-duty model.