Johnson Controls VFD67 Series, Getting Started Manual, Page: 35 / 52

VFD67 Size A to D Getting Started Guide
35
Issue Number: 1 www.johnsoncontrols.com
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Fr : Voltage proportional to motor speed
Ld : Voltage proportional to motor load
A : Voltage proportional to output current
Por : Voltage proportional to output power
USEr : User programmable
3 : 3kHz
6 : 6kHz
12 : 12kHz
18 : 18kHz
0 : No autotune
1 : Non-rotating static autotune
2 : Rotating autotune
Enter the motor rated frequency (taken from the motor name plate).
Defines the voltage to frequency ratio applied to the motor.
Auto : Automatically calculates the number of motor poles from the settings of Pr 07
and Pr 39
2P : Set for a 2 pole motor
No Function Range Defaults Type
36 Analog output control (terminal B1) Fr, Ld, A, Por, USEr Fr RW
A change to Pr 36 is set by pressing the MODE key on exit from parameter edit mode.
NOTE
M
No Function Range Defaults Type
37 Maximum switching frequency 3, 6, 12, 18 kHz 3 RW
18kHz is not available on VFD67 size B, C and D 400V units and size D 200V units.
NOTE
With drive firmware V01.08.00 onwards, the 400V size C drive will have an actual switching
frequency of 3kHz when the output frequency is below 6Hz.
NOTE
No Function Range Defaults Type
38 Autotune 0 to 2 0 RW
When a rotating autotune is selected, the drive will accelerate the motor up to
2
/
3
maximum speed in Pr 02 .
WARNING
The motor must be at a standstill before a non-rotating autotune is initiated.
NOTE
The motor must be at a standstill and unloaded before a rotating autotune is initiated.
NOTE
Once a rotating autotune has been initiated (Pr 38 = 2), it must be completed before the
drive will operate normally. If the rotating autotune is not completed (through the drive
being disabled or a trip occurring), the drive will only run at the autotune speed (
2
/
3
rated speed reference).
NOTE
No Function Range Defaults Type
39 Motor rated frequency 0.0 to 1500.0 Hz 60.0 RW
No Function Range Defaults Type
40 Number of motor poles Auto, 2P, 4P, 6P, 8P Auto RW