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Hi- Frequency Solutions – The Expert for High-speed Applications
Powerful, fl exible and compact:
These words describe the drive amplifi er SD2S by SIEB & MEYER. Using the available operation modes synchronous and asynchronous motors with speeds up to 480,000 rpm can be driven by SD2S, especially in respect of a low motor heating in high-turning motors with small rotor volume. Furthermore, small motor temperatures are the basis for a high machining quality. Depending on the application, the operation can be carried out with or without encoder. For the operation with an encoder SD2S offers the possibility to evaluate the common encoder systems existing on the market. SD2S is connected to the higher-ranking control via analog reference values (+/-10 V), digital I/Os, RS232, USB, CAN bus or Profi bus. 
Technology Functions for Grinding Applications

Multi parameter sets –
The flexibility of grinding machines largely depends on the possibility of a fast and simple use of grinding spindles. The feature of saving up to 64 motor parameter sets in the drives enables the variable operation with different motors. The number of parameter sets can be encoded via the digital inputs or alternatively via the provided data interfaces.

Gap elimination – The integrated technology functions for the gap elimination allow an effi cient machine operation. This is especially advantageous, if an external acoustic emission evaluation is not possible for technical or fi nancial reasons.
1-phase supply

5 0 V mains supply (AC)
0.3 kVA Ir: 10 A IP: 14 A 250 x 75 x 180 mm
0.7 kVA Ir: 20 A IP: 28 A 250 x 110 x 180 mm
230 V mains supply (AC)
1.4 kVA Ir: 10 A IP: 14 A (28)* 250 x 75 x 180 mm
3.8 kVA Ir: 20 A IP: 28 A (56)* 250 x 110 x 180 mm
3-phase supply

50 V mains supply (AC)
1.5 kVA Ir: 20 A IP: 28  250 x 110 x 180 mm
230 V mains supply (AC)
5.9 kVA Ir: 20 A IP: 28 (56 A )* 250 x 110 x 180 mm
480 V mains supply (AC)
9.7 kVA Ir: 14 A IP: 28 (56 A )* 250 x 110 x 180 mm
15 kVA Ir: 23 A IP: 29 390 x 180 x 180 mm
20 kVA Ir: 35 A IP: 56 460 x 225 x 200 mm
30 kVA Ir: 44 A IP: 70 460 x 225 x 200 mm
55 kVA Ir: 80 A IP: 113 460 x 250 x 200 mm**
 
Ir = rated current, Ip = peak current. Stated currents are rms values.
Voltage limits at 50 V: 50 V -10% up to 64 V +10%
Voltage limits at 230 V: 110 V -10% up to 230 V +10%
Voltage limits at 480 V: 230 V -10% up to 480 V +10%
The device dimensions are defi ned as height x width x depth,
related to the mounting dimensions.

* Version with higher peak current.
** Premliminary data.
DC mains supply
680 V (DC) mains supply – Supply via external power supply
55 kVA Ir: 80 A IP: 120 A 480 x 355 x 260 mm
Technical Specifi cations PS10

3 x 480 V mains supply (AC)
48 kVA 55 kVA 480 x 150 x 260 mm

Voltage limits at 480 V: 400 V -10% up to 480 V +10%
The device dimensions are defi ned as height x width x depth
related to the mounting dimensions.
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