Danfoss vlt series Operating Instructions Manual page 16

FC 300 Extended Relay Card Operating In-
structions
[20] Freeze output
[21] Speed up
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
[22] Speed down
[23] Set-up select bit 0
[24] Set-up select bit 1
[26] Precise stop inv.
[27] Precise start, stop
[28] Catch up
[29] Slow down
[30] Counter input
[31] Pulse edge triggered
Ramp 2 Ramp up Time and par. 3-52 Ramp 2 Ramp down Time ) in the range 0 -
(par. 3-51
Maximum Reference .
par. 3-03
Freezes the actual motor frequency (Hz), which is now the point of enable/condition for Speed up
and Speed down to be used. If Speed up/down is used, the speed change always follows ramp 2
Ramp 2 Ramp up Time and par. 3-52 Ramp 2 Ramp down Time ) in the range 0 -
(par. 3-51
par. 1-23 Motor Frequency .
NB!
When Freeze output is active, the frequency converter cannot be stopped via a
low 'start [8]' signal. Stop the frequency converter via a terminal programmed
for Coasting inverse [2] or Coast and reset, inverse.
Select Speed up and Speed down if digital control of the up/down speed is desired (motor poten-
tiometer). Activate this function by selecting either Freeze reference or Freeze output. When Speed
up/ down is activated for less than 400 msec. the resulting reference will be increased/ decreased
by 0.1 %. If Speed up/ down is activated for more than 400 msec. the resulting reference will follow
the setting in ramping up/ down parameter 3-x1/ 3-x2.
Same as Speed up [21].
Select Set-up select bit 0 or Select Set-up select bit 1 to select one of the four set-ups. Set
Active Set-up to Multi Set-up.
par. 0-10
(Default Digital input 32): Same as Set-up select bit 0 [23].
Prolongs stop signal to give a precise stop independent of speed.
Sends an inverted stop signal when the precise stop function is activated in par. 1-83
Function .
Precise stop inverse function is available for terminals 18 or 19.
Use when Precise ramp stop [0] is selected in par. 1-83
Speed
[rpm,Hz]
Max Speed
P 4-13
Actual motor
shaft speed
Start signal
Term 18[8]
(P 5-10)
Precise Stop
Term 19 [26]
(P 5-11)
Increases reference value by percentage (relative) set in par. 3-12
Reduces reference value by percentage (relative) set in par. 3-12
Precise Stop Function acts as Counter stop or speed compensated
Precise stop function in par. 1-83
counter stop with or without reset. The counter value must be set in par. 1-84
Value .
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).
MI.33.G3.02 - VLT® is a registered Danfoss trademark
Shut down Catch up
0
1
0
1
Precise Stop Function .
A A = B+C
Compensated
B C
ramp slope
Time
Catch up/slow Down Value .
Catch up/slow Down Value .
5 Parameter Set-up
5
0
0
1
1
Precise Stop
Precise Stop Counter
15