F-52 Minimum Reference
Range: Function:
0.000 Refer-
enceFeed-
backUnit*
[-999999.999 - par. P-03 Reference-
FeedbackUnit]
Enter the Minimum Reference. The Minimum Reference is the lowest value obtainable by summing all
references. The Minimum Reference value and unit matches the configuration choice made in par.
H-40 Configuration Mode and par. CL-12 Reference/Feedback Unit, respectively.
NB!
This parameter is used in open loop only.
F-53 Maximum Reference
Range: Function:
50.000 Ref-
erenceFeed-
backUnit*
[par. P-02 - 999999.999 Reference-
FeedbackUnit]
Enter the Maximum Reference. The Maximum Reference is the highest value obtainable by summing all
references. The Maximum Reference value and unit matches the configuration choice made in par.
H-40 Configuration Mode and par. CL-12 Reference/Feedback Unit, respectively.
NB!
This parameter is used in open loop only.
H-08 Reverse Lock
Option: Function:
Selects the motor speed direction required.
Use this parameter to prevent unwanted reversing.
[0] Clockwise Only operation in clockwise direction will be allowed.
[2] * Both directions Operation in both clockwise and anti-clockwise direction will be allowed.
NB!
The setting in par. H-08 Reverse Lock has impact on the Flying Start in par. H-09 Start Mode.
H-09 Start Mode
Option: Function:
This function makes it possible to catch a motor which is spinning freely due to a mains drop-out.
When par. H-09 Start Mode is enabled, par. F-24 Holding Time has no function.
Search direction for flying start is linked to the setting in par. H-08 Reverse Lock.
Clockwise [0]: Flying start search in clockwise direction. If not successful, a DC brake is carried out.
Both Directions [2]: The flying start will first make a search in the direction determined by the last reference
(direction). If not finding the speed it will make a search in the other direction. If not successful, a DC brake
will be activated in the time set in par. B-02 DC Braking Time. Start will then take place from 0 Hz.
[0] * Disabled Select Disable [0] if this function is not required
[1] Enabled Select Enable [1] to enable the frequency converter to “catch” and control a spinning motor.
H-40 Configuration Mode
Option: Function:
[0] * Open Loop Motor speed is determined by applying a speed reference or by setting desired speed when in Hand Mode.
Open Loop is also used if the frequency converter is part of a closed loop control system based on an
external PID controller providing a speed reference signal as output.
[3] Closed Loop Motor Speed will be determined by a reference from the built-in PID controller varying the motor speed
as part of a closed loop control process (e.g. constant pressure or flow). The PID controller must be con-
figured in par. CL-## or via the Function Setups accessed by pressing the [Quick Menus] button.
AF-600 FP High Power Operating Instructions
112
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