Danfoss vlt series Operating Instructions Manual page 17

5 Parameter Set-up
[32] Pulse time based
5
[34] Ramp bit 0
[35] Ramp bit 1
Preset ramp bit
Ramp 1
Ramp 2
Ramp 3
Ramp 4
[36] Mains 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
[65] Reset Counter B
[70] Mech. Brake Feedback
[71] Mech. Brake Feedback inv.
16
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.
Speed [rpm]
a Time[sec]
a: very low encoder resolution
Pulse
Timer
Sample time
Time counter
Time Start
Enables a choice between one of the 4 ramps available, according to the table below.
Same as Ramp bit 0.
Activates par. 14-10 Mains Failure . Mains 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.
Input for reset of counter B.
Brake feedback for hoisting applications: Set par. 1-01
feedback ; set par. 1-72 Start Function to [6] Hoist mech brake Ref.
Inverted brake feedback for hoisting applications
MI.33.G3.02 - VLT® is a registered Danfoss trademark
FC 300 Extended Relay Card Operating In-
Speed [rpm]
b Time[sec]
b: standard encoder resolution
Read Timer: Read Timer:
20 timer tides 20 timer tides
1
0
0
1
1
Motor Control Principle to [3] flux w/ motor
structions
0
0
1
0
1
Precise Stop