GE Industrial Solutions AF-600 FP Fan and Pump Drive (460V_575V 150HP and above) - Manual (Page 115)

NB!
This parameter cannot be changed when motor is running.
NB!
When set for Closed Loop, the commands Reversing and Start Reversing will not reverse the direction of the motor.
H-43 Torque Characteristics
Option: Function:
[0] Compressor torque Compressor [0]: For speed control of screw and scroll compressors. Provides a voltage which is optimized
for a constant torque load characteristic of the motor in the entire range down to 10 Hz.
[1] Variable torque Variable Torque [1]: For speed control of centrifugal pumps and fans. Also to be used when controlling
more than one motor from the same frequency converter (e.g. multiple condenser fans or cooling tower
fans).Provides a voltage which is optimized for a squared torque load characteristic of the motor.
[2] Energy Savings CT
[3] * Auto Energy Optim. VT Auto Energy Optimization VT [3]: For optimum energy efficient speed control of centrifugal pumps and
fans. Provides a voltage which is optimized for a squared torque load characteristic of the motor but in
addition the AEO feature will adapt the voltage exactly to the current load situation, thereby reducing
energy consumption and audible noise from the motor. To obtain optimal performance, the motor power
factor cos phi must be set correctly. This value is set in par. SP-43 Motor Cosphi. The parameter has a
default value and is automatically adjusted when the motor data is programmed. These settings will
typically ensure optimum motor voltage but if the motor power factor cos phi requires tuning, an auto
tune function can be carried out using par. P-04 Auto Tune. It is very rarely necessary to adjust the motor
power factor parameter manually.
H-73 Warning Speed High
Range: Function:
par. F-17
RPM* [par. H-72 - par. F-17 RPM] Enter the n
HIGH
value. When the motor speed exceeds this limit (n
HIGH
), the display reads SPEED HIGH. The
signal outputs can be programmed to produce a status signal on terminal 27 or 29 and on relay output
01 or 02. Programme the upper signal limit of the motor speed, n
HIGH
, within the normal working range
of the frequency converter. Refer to the drawing in this section.
NB!
Any changes in par. F-17 Motor Speed High Limit [RPM] will reset the value in par. H-73 Warning Speed High to the same value as set in par. F-17 Motor Speed
High Limit [RPM].
If a different value is needed in par. H-73 Warning Speed High, it must be set after programming of par. F-17 Motor Speed High Limit [RPM]!
H-76 Warning Feedback Low
Range: Function:
-999999.99
9 Proc-
essCtrlUnit* [-999999.999 - par. H-57 ProcessCtr-
lUnit] Enter the lower feedback limit. When the feedback falls below this limit, the display reads Feedb Low. The
signal outputs can be programmed to produce a status signal on terminal 27 or 29 and on relay output
01 or 02.
H-77 Warning Feedback High
Range: Function:
999999.999
ProcessCtr-
lUnit* [par. H-56 - 999999.999 ProcessCtr-
lUnit] Enter the upper feedback limit. When the feedback exceeds this limit, the display reads Feedb High.
AF-600 FP High Power Operating Instructions
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