Danfoss VLT FC 100 Series Programming Manual page 60

Parameter Description
3-17 Reference 3 Source
Option: Function:
Select the reference input to be used
for the third reference signal.
3-15 Reference 1 Source, 3-16 Reference
2 Source and 3-17 Reference 3 Source
define up to three different reference
signals. The sum of these reference
signals defines the actual reference.
[0] No function
*
[1] Analog input 53
[2] Analog input 54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital pot.meter
[21] Analog input X30/11
[22] Analog input X30/12
[23] Analog Input X42/1
[24] Analog Input X42/3
[25] Analog Input X42/5
[29] Analog Input X48/2
[30] Ext. Closed-loop 1
[31] Ext. Closed-loop 2
[32] Ext. Closed-loop 3
NOTE!
This parameter cannot be changed while the motor is
running.
3-19 Jog Speed [RPM]
Range: Function:
Size [ 0 - par. Enter a value for the jog speed n
related 4-13 RPM] which is a fixed output speed. The
*
Adjustable frequency drive runs at this
speed when the jog function is
activated. The maximum limit is defined
in 4-13 Motor Speed High Limit [RPM].
See also 3-80 Jog Ramp Time.
3.5.3 3-4* Ramp 1
Configure the ramp parameter, ramping times, for each of
the two ramps (parameter group 3-4* and parameter
group 3-5*).
®
VLT HVAC Drive Programming Guide
Figure 3.15
3-40 Ramp 1 Type
Option:
[0]
[1]
[2]
NOTE!
If S-ramp [1] is selected and the reference during ramping
is changed, the ramp time may be prolonged in order to
,
JOG
realize a jerk-free movement, which may result in a longer
start or stop time.
Additional adjustment of the S-ramp ratios or switching
initiators may be necessary.
3-41 Ramp 1 Ramp-up Time
Range:
Size related
par .3 − 41 =
3-42 Ramp 1 Ramp-down Time
Range:
Size related
par .3 − 42 =
MG11CD22 - VLT ® is a registered Danfoss trademark
Function:
Select the ramp type, depending on
requirements for acceleration/deceleration.
A linear ramp will give constant acceleration
during ramping. An S-ramp will give non-
linear acceleration, compensating for jerk in
the application.
Linear
*
S-ramp Acceleration with lowest possible jerk.
Const Jerk
S-ramp S-ramp based on the values set in 3-41 Ramp
Const Time 1 Ramp up Time and 3-42 Ramp 1 Ramp Down
Time.
[ 1.00 - 3600.00 s]
*
tacc × nnorm par .1 − 25
s
ref rpm
[ 1.00 - 3600.00 s]
*
tdec × nnorm par .1 − 25
s
ref rpm
3 3
Function:
Function:
3-33