SD2S Servo Amplifier

The Smart Drive for Servo Applications

Powerful, flexible, low cost – these words describe the servo amplifier SD2S by SIEB & MEYER. The compact dimensions allow space-saving design of the switch cabinet. Linear motors, rotary servo motors, high-pole torque motors as well as synchronous/asynchronous tool spindles with or without sensor can be driven by SD2S. For the connection to a higher-ranking control analog reference values (+/-10 V) or pulse-direction values, CAN bus or PROFIBUS* signals and protocols are processed. Alternatively, a CNC control can be connected via the bus system SERVOLINK 4. The communication via EtherCAT (CoE)** is optinally provided

* Via gateway
** CoE = CAN over EtherCAT

Universal Motor Encoder Interface

SD2S evaluates all common measuring systems for rotary and linear motors. The drive controls systems with absolute value encoders with EnDat, Hiperface or SSI interface, encoders, magnetoresistive sensors, Hall effect sensors, linear Hall sensors, linear scales with 1Vpp or TTL level as well as resolvers.

Safety integrated

The currently effective safety category 4 can be reached by the integrated restart lock. As external protective circuits can be reduced, system costs are minimized. 

New: High Protection Rating

SIEB & MEYER has extended the proven SD2S series of frequency converters by a new stand-alone version with a high protection rating. Therefore, the frequency converter can be used outside a switch cabinet making the extension and modification of machinery and equipment more easy. In addition, concepts with decentrally arranged frequency converters are feasible.

Usually, the space in switch cabinets is tight and existing capacities are fully utilized. The new, self-sufficient SD2S design offers customers the opportunity to put additional frequency converters into operation without any financial and organizational effort.

Key figures:

- air-cooled stand-alone model
- mains voltage of 5 kVA @ 3 x 400VAC
- compact dimensions: 107 mm, 413 mm and 315.5 mm (WxHxD)
- flexible cable passages enable a simple installation or a device replacement

Function - Advantage - Benefit

Extensive drive functions

Function: Freely selectable drive functions, selectable drive functions SVC, V/f-PWM, HS-Block, Servo.
Advantage: The optimal drive function can be selected depending on the application requirements.
Benefit: Best system performance.

Universal motor encoder interface

Function: Resolver, encoder / linear scale (TTL or Sin/Cos), EnDat, Hiperface, SSI, Hall sensor, linear Hall sensor, magnetoresistive sensor, NAMUR sensor.
Advantage: High flexibility in the choice of the motor encoder interface.
Benefit: Low system costs, free choice of the motor manufacturer.

Load Indicator

Function: As standard SD2S offers a highly precise evaluation of the torque-forming current.
Advantage: The evaluation can be used for tool monitoring. These are for example detection of tool breakage, tool wear, gap eliminator (GAP and crash) and an optimal control of the feed rate during the manufacturing process.
Benefit: Low system costs, no need of cost-intensive monitoring sensors.