Baldor VS1GV21-1B Installation & Operating Manual

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Baldor VS1GV21-1B Installation & Operating Manual Manual pdf 94 page image

7-16 Parameter Descriptions MN7657.2 Level 2 Parameters (Advanced Prog, Level 2 Blocks)Table 7-2 Level 2 Parameter Block DefinitionsBlock Title Parameter (Number)Selection (Value) Parameter Name and DescriptionDRIVELIMITSOPERATING ZONE (2001) Preset Value: 0Range: 0 - 3Std Const Trq (0)Sets the PWM operating zone to Standard 2.5kHz output carrier frequencyConstant Torque. Constant Torque allows 175% for 3 seconds and 150% for60 seconds of peak overload capacity.Std Var Trq (1)Sets the PWM operating zone to Standard 2.5kHz output carrier frequencyVariable Torque. Variable Torque allows 125% for 1 second and 115% for 60seconds of peak overload capacity.Quiet Const Trq (2)Sets the PWM operating zone to Quiet 8.0kHz output carrier frequencyConstant Torque. Constant Torque allows 175% for 3 seconds and 150% for60 seconds of peak overload capacity.Quiet Var Trq (3)Sets the PWM operating zone to Quiet 8.0kHz output carrier frequencyVariable Torque. Variable Torque allows 125% for 1 second and 115% for 60seconds of peak overload capacity.MIN OUTPUT SPEED (2002) Preset Value: 0Range: 0 - MAX Speed RPMSets the minimum motor speed in RPM. During operation, the motor speedwill not decrease below this value except for motor starts or during dynamicbraking to a stop.MAX OUTPUT SPEED (2003) Preset Value: Rated Motor SpeedRange: 30 - 15,000 RPMSets the maximum motor speed in RPM.PWM FREQUENCY (2004) Preset Value: 2500Range: 1500 - 16000 HzThe frequency that the output transistors are switched. PWM (pulse widthmodulation) frequency is also referred to as “Carrier” frequency. PWM shouldbe as low as possible to minimize stress on the output transistors and motorwindings. It is recommended that the PWM frequency be set to approximately15 times the maximum output frequency of the control. Ratios less than 15will result in non-Sinusoidal current waveforms.CURR RATE LIMIT (2005)Only available or active ineither Vector mode. Ignore thisparameter for V/F mode.Preset Value: 0.004Range: 0.000 - 10.000 secondsLimits the rate of torque change in response to a torque command. Thisparameter sets the time in seconds to change the output torque by 1 timesmotor rated torque.PEAK CURR LEVEL (2006) Preset Value: CALCRange: 0 - Peak Rated Current(Vector) Sets maximum motor current level for operation.(V/F) Sets the motor current (including MAG current) where foldback begins.REGEN TORQ LIMIT (2007) Preset Value: CALCRange: 0.0 - Drive Rated Peak Current in ampsSets the maximum motor current (not including MAG current allowed duringregen. Based upon brake resistor ohms programmed in P2501.REGEN ADJUST (2008)Only available or active in V/Fmode. Ignore this parameter forvector modes.Preset Value: 0Range: 0 - 500 Hz/SecUsed to increase the drive output frequency to the motor when regen currentis greater than 1/10th of current limit to avoid overvoltages when applying thedrive with cyclic regenerative loads such as pump jacks.