44
References and Limits
Parameters 200 through 228
In this parameter group, the frequencies and references of the drive
are set.
This parameter group includes:
Setting of ramp times
Choice of four preset references
Setting four bypass frequencies
Setting maximum current to motor
Setting warning limits for current, frequency, reference and
feedback
200 Output Frequency Range
(FREQUENCY RANGE)
Value:
★ 0 to 120 Hz (0 - 120 HZ) [0]
0 to 1000 Hz (0 - 1000 HZ) [1]
Function:
Choose one of two maximum output frequency ranges.
Description of choice:
Select the output frequency range that includes the highest output
frequency required for normal operation.
NOTE
HVAC applications seldom require output
frequency greater than 120 Hz. Check with Trane,
motor manufacturer, or manufacturer of driven
equipment before selecting 0 - 1000 Hz range.
201 Output Frequency Low Limit
(MIN. FREQUENCY)
Value:
0.0 to parameter 202 ★ 0.0 HZ
Function:
Set the minimum speed at which the motor is to run.
Description of choice:
A value from 0.0 Hz to the Output Frequency High Limit
frequency set
in parameter 202 can be selected. The drive will not be able to run
continuously at an output frequency below this value in any mode.
202 Output Frequency High Limit
(MAX. FREQUENCY)
Value:
Parameter 201 to parameter 200 ★ 60 Hz
Function:
Set the highest speed at which the motor is to run.
NOTE
Output frequency of drive can never assume
value higher than 1/10th of switching frequency.
See parameter 407, Switching Frequency.
Description of choice:
Set a value between the low frequency limit, set in parameter 201, and
the frequency range limit, set in parameter 200. The drive will not be
able to run continuously at an output frequency above this value in any
mode.
NOTE
HVAC applications seldom require output
frequency greater than 60 Hz. Check with Trane,
motor manufacturer, or manufacturer of driven
equipment before selecting a maximum
frequency greater than 60 Hz.
NOTE
For fan applications, factory setting of
parameter 201 is 6 Hz. For pump applications,
factory setting for parameter 201 is 18 Hz.
✭ Indicates factory default setting. Numbers in brackets [ ] represent selection as displayed on the serial bus.
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