Danfoss VLT AutomationDrive FC 300 Instruction Manual page 67

VLT ® AutomationDrive FC 300 Instruction
Manual
[31] Pulse edge triggered
[32] Pulse time based
[34] Ramp bit 0
[35] Ramp bit 1
Preset ramp bit
Ramp 1
Ramp 2
Ramp 3
Ramp 4
[36] Line failure inverse
[41] Latched Precise Stop inverse
[55] DigiPot Increase
[56] DigiPot Decrease
[57] DigiPot Clear
[60] Counter A
[61] Counter A
[62] Reset Counter A
[63] Counter B
[64] Counter B
Edge-triggered pulse input counts number of pulse flanks per sample time. This gives a higher
resolution at high frequencies, but is not as precise at lower frequencies. Use this pulse principle
for encoders with very low resolution (e.g., 30 ppr).
Time-based pulse input measures the duration between flanks. This gives a higher resolution at
lower frequencies, but is not as precise at higher frequencies. This principle has a cut-off frequency
which makes it unsuited for encoders with very low resolutions (e.g., 30 ppr) at low speeds.
a: very low encoder resolution
Enables a choice between one of the four ramps available, according to the table below.
Same as Ramp bit 0.
Line Failure
Activates par. 14-10 . Line failure inverse is active in the logic "0" situation.
Sends a latched stop signal when the precise stop function is activated in par. 1-83
Function . The latched precise stop inverse function is available for terminals 18 or 19.
INCREASE signal to the digital potentiometer function described in par. group 3-9*
DECREASE signal to the digital potentiometer function described in par. group 3-9*
Clears the digital potentiometer reference described in par. group 3-9*
(Terminal 29 or 33 only) Input for increment counting in the SLC counter.
(Terminal 29 or 33 only) Input for decrement counting in the SLC counter.
Input for reset of counter A.
(Terminal 29 or 33 only) Input for increment counting in the SLC counter.
(Terminal 29 or 33 only) Input for decrement counting in the SLC counter.
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4 How to Program
b: standard encoder resolution
1 0
0 0
0 1
1 0
1 1
4
Precise Stop
4-21