GE DS200TBCAG2A Gas turbine control card

Calculating the value of the RAI resistor can be difficult since it is a function of the following: • Motor characteristics. (eg. armature resistance and temperature). • Brush resistance (changing with wear). An approximate value may be found experimentally using a RAI resistor value of 400κΩ to 600κW.Too low a value for the RAI resistor may modify the velocity loop response. For guidance, contact Control Techniques.

Dynamic calibration For modifying the setting, the following equipment is required: Low frequency function generator Frequency range: 0Hz to 10MHz Output voltage: –3.5V to +3.5V

Zero speed torque

 RS resistor No resistor is fitted as standard. Mount an RS resistor to adjust the amount of torque current to be applied to the motor when the drive has received a STOP command. The RS resistor value is a function of the following: • Motor characteristics (e.g. armature resistance and temperature) • Brush resistance (changing with wear) To achieve an accurate value, it is advisable to carry out a simple test by fitting a 2.2MΩ potentiometer in the RS location, enable the Drive and set the potentiometer to reach the required torque level. It is recommended that when the value of RS is established, you replace the potentiometer with a conventional resistor.

Twin-trace storage oscilloscope. 

1. Remove the speed reference signal from pins 9 and 10. 2. Connect the function generator output to pins 9 and 10. 3. Set the function generator at the following: Square wave output Amplitude: ±2V Frequency: 0.2Hz 4. Connect oscilloscope channel A to pin 11. 5. Connect oscilloscope channel B to pin 1. 6. Connect oscilloscope ground to pin 8. 7. Connect the oscilloscope external trigger input to the function generator output.

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----------------------Ruichang Mingsheng Automation Equipment Co., Ltd----------------------

PLC module, programmable controller, CPU module, IO module, DO module, AI module, DI module

Network communication module,

Ethernet module, motion control module, analog input module, analog output module, digital input module, digital output

Module, redundancy module, power module, relay output module, relay input module, processor module