Motorized Capacitors

Comet Motorized Capacitors offer the latest integrated drive technology for vacuum capacitors at the best price-performance ratio. A single communication protocol for RS232 and RS485 provides flexibility in a wide range of applications.

Motorized Capacitors are the ideal solution for high-precision operation. Besides ensuring highest accuracy, motorized capacitors simplify procurement with an easy-to-install subsystem.
The core component of the Universal Motorized Capacitor is a Comet variable vacuum capacitor, mounted with an insulating cover, coupler and stepper-motor. A durable, backlash-free Comet-coupler connects the capacitor to the drive system. Integrated flanges ensure easy mounting in the system. Appropriate high-voltage insulation between the capacitor and the flanges is also included.

Benefits

Accurate alignment of variable vacuum capacitor and stepper-motor and a durable, backlash-free coupling result in long, consistent lifetime
Assembled solution for easy installation
Highly accurate repeatability of capacitance positioins
Lower total cost of ownership

Features

One driver PCB for new Integrated Drive (ID-400 and ID 1200)
Same communication Comet protocool RS232 and RS485
Flexible baud rate between 9.600 and 115.200 Bd
Connect up to 32 modules in RS485 mode
Readout of full-step, micro-step and capacitance position
Capacitance table with higher resolution on request

Find out more in our Flyer

Integrated Drive Solutions

Capacitor tuning

Using a stepper-motor, the capacitance of the variable capacitor can be tuned precisely between user selectable limits.

High-level commands

The module can be controlled from a PC or a control board using high-level commands (RS232, RS485). The communication protocol allows the execution of the following commands:

Precise motion control by setting full-step, micro-step or capacitance position
Set idle and drive current, speed and slave address within allowed range
Read out of actual full-step, micro-step and capacitance position
Read out of actual full-step, micro-step and capacitance position
Read out of characteristic capacitance curve (C-Curve)
Read out of various parameters such as firmware version, serial number and all customer and factory limits
Comprehensive RX responses (ACK, NAK):

     - ACK for all commands
     - ACK for «movement-started» resp. «movement completed»
     - NAK e.g. check-sum error, index out of range