VT 17245-37

Product Description:

Bosch Rexroth Indramat manufactures the VT 17245-37. In industrial automation systems, the Bosch Rexroth Indramat VT 17245-37 servo amplifier is used to control the electrical impulses to the servo motors. The regulated power supply voltage of ±22V to ±28V with voltage regulators or ±15V without regulators is a key specification. Because the power source variations can have a direct impact on the precision and reliability of the servo motor operation, this regulated voltage is required to ensure steady and constant performance, operating within this voltage range ensures the amplifier can deliver the power without going over its limits and preserve peak performance. To ensure efficiency and not to draw too much power from the system, the power supply current is set to less than 200 mA.

The VT 17245-37 can be set to have an output current of ±60 mA or ±100 mA. Since the output current is related to the torque and speed of the motor, this is a critical feature for precise control of the servo motor. With the option to choose between these two current levels, many applications can be made flexible to fit different motor sizes and operating conditions. Another important feature is the dither current, which is set to 3 mApp at 340 Hz. A small high-frequency signal called dither is added to the control signal to reduce static friction and increase the servo system accuracy. By keeping the dither signal outside of the servo motor frequency range, the 340 Hz frequency avoids interference and delivers the required friction reduction. The servo motor can be precisely positioned and moved with the internal control voltage range of 0 to ±10V, which allows precise signal processing and control.

The physical requirements of the VT 17245-37 are also important for its integration into industrial systems. The card is very light, 0.33 lbs (0.15 kg), and 100 x 160 mm in size, which conforms to Eurocard standard DIN 41 494, so it can be easily installed in small control cabinets. Standardized rack installation is further facilitated by the front plate specifications, which are 8 HP wide and 3U (5.05 inches or 128 mm) high. Reliable switching is ensured by a relay duty cycle of 1 ms, a nominal coil resistance of 2000 Ω and a relay coil voltage of 22V to 28V. The internal relays that control several servo system components have certain characteristics to work correctly. The device is robust by its storage temperature range of -4 to 158 °F (-20° to 70°C) so it can operate reliably in various industrial conditions.