Baldor Inverter Control, 15H manual Block Title, Output Limits, Custom Units

Table 4-2 Parameter Block Definitions Level 2

Block Title		PARAMETER	Description
OUTPUT LIMITS		Operating Zone	The PWM operating zone; Standard 2.5kHz or Quiet 8.0kHz.
			Two operating modes are also selectable: Constant Torque and Variable Torque.
			Constant Torque allows 170 - 200% overload for 3 seconds and 150% overload for 60
			seconds. Variable Torque allows 115% peak overload for 60 seconds.
		MIN Output	The minimum output frequency to the motor. The scaling of an external speed
		Frequency	command signal will also be affected to the extent that a minimum speed command
			will represent the minimum output frequency. During operation the output frequency
			will not be allowed to go below this minimum output frequency (unless the motor is
			starting from 0Hz or is ramped (regen) to a stop).
		MAX Output	The maximum output frequency to the motor. The scaling of an external speed
		Frequency	command signal will also be affected to the extent that a maximum speed command
			will represent the maximum output frequency. The max output frequency may be
			exceeded slightly if slip compensation is active.
		PK Current Limit	The maximum output (peak) current to the motor. Values above 100% of the rated
			current may be available depending upon the operating zone selected.
		PWM Frequency	The frequency that the output transistors are switched. PWM should be as low as
			possible to minimize stress on the output transistors and motor windings. PWM
			frequency is also referred to as “Carrier” frequency.
		REGEN Limit	Automatically increases the output frequency during REGEN periods for cyclic loads.
			The output frequency will increase at the rate set by REGEN Limit ADJ but will not
			exceed the Level 2, Output Limits “MAX Output Frequency” parameter value.
		REGEN Limit ADJ	The amount of automatic frequency adjustment that occurs when REGEN Limit is turned
			ON. Set as a change of hertz per second. Represents the ramp rate of the output
			frequency during periods of motoring and overhauling (regen).
CUSTOM UNITS		Max Decimal	The number of decimal places of the Output Rate display on the Keypad display. This
		Places	value will be automatically reduced for large values. The output rate display is only
			available if the “Value At Speed” parameter value is non-zero.
		Value At Speed	Sets the desired output rate value per motor RPM. Two numbers are displayed on the
			keypad display (separated by a slash “/”). The first number (left most) is the value you
			want the keypad to display at a specific motor speed (second number, right most). A
			decimal may be inserted into the numbers by placing the flashing cursor over the
			up/down arrow.
		Value DEC Places	Serial Only. *
		Value Speed REF	Serial Only. *
		Units of Measure	Allows you to specify units of measure to be displayed on the Output Rate display. Use
			the shift and arrow keys to scroll to the first and successive characters. If the
			character you want is not displayed, move the flashing cursor over the special
			up/down character arrow on the left side of the display. Use the up/down arrows and
			the shift key to scroll through all 9 character sets. Use the ENTER key to save your
		Units of MEAS 2	selection.
			Serial Only. *
* Note:	Serial Commands. When using the serial command option, the “Value AT Speed”, “Value DEC Places”, and “Value Speed
	REF” parameters must be set. The Value AT Speed parameter sets the desired output rate per increment of motor speed.
	The Value DEC Places sets the desired number of decimal places of the Value AT Speed number. The Value Speed REF
	sets the increment of motor speed for the desired output rate.
	The Units of Measure parameter sets the two left-most characters of the custom units display while the Units of MEAS 2
	parameter sets the two right most characters. For example, if “ABCD” is the custom units, “AB” is set in the Level 2 Custom
	Units block, Units of Measure parameter and “CD” is set in the Level 2 Custom Units block, Units of MEAS 2 parameter.
Note:	Custom Display Units. The output rate display is only available if the Value AT Speed parameter has been changed from a
	value of 0 (zero). To access the Output Rate display, use the DISP key to scroll to the Output Rate display.

4-18 Programming & Operation MN715