3.5.5 3-8* Other Ramps
3-80 Jog Ramp Time
Range:
Function:
Size
related
*
[1.00 -
3600.00
s]
Enter the jog ramp time, i.e. the acceleration/
deceleration time between 0 RPM and the
rated motor speed (n
M,N
) (set in
). Ensure that the resultant
output current required for the given jog ramp
time does not exceed the current limit in
. The jog ramp time starts
upon activation of a jog signal via the control
panel, a selected digital input, or the serial
communication port.
par. 3 − 80 =
tjog × nnorm par. 1 − 25
jog speed par. 3 − 19 s
130BA070.10
Time
P 3-80
RPM
P 4-13 RPM
high limit
P 1-25
Motor speed
Jog speed
P 3-19
P 3-80
Ramp up
(acc)
Ramp down
(dec)
t jog
t jog
P 4-11 RPM
low limit
3-81 Quick Stop Ramp Time
Range:
Function:
Application
dependent
*
[0.01 -
3600.00 s]
Enter the quick–stop ramp-down time,
i.e. the deceleration time from the
synchronous motor speed to 0 RPM.
Ensure that no resultant over-voltage
will arise in the inverter due to
regenerative operation of the motor
required to achieve the given ramp-
down time. Ensure also that the
generated current required to achieve
the given ramp-down time does not
exceed the current limit (set in
4-18 Current Limit
). Quick-stop is
activated by means of a signal on a
selected digital input, or via the serial
communication port.
Time
RPM
P 4-13 RPM
high limit
Reference
P 1-25
Motor speed
low limit
P 4-11 RPM
P 3-81
Qramp
Qstop
130BA069.10
Par. 3 − 81 =
tQstop s x ns RPM
Δ
jog ref (par. 3 − 19) RPM
3-82 Starting Ramp Up Time
Range:
Function:
Size related
*
[0.01 -
3600.00 s]
The ramp-up time is the acceleration
time from 0rpm to the nominal
motor speed set in
when Compressor
Torque is active in
.
3.5.6 3-9* Digital Pot.Meter
The digital potentiometer function allows the user to
increase or decrease the actual reference by adjusting the
set-up of the digital inputs using the functions INCREASE,
DECREASE or CLEAR. To activate the function, at least one
digital input must be set up to INCREASE or DECREASE.
3-90 Step Size
Range:
Function:
0.10 %
*
[0.01 -
200.00 %]
Enter the increment size required for
INCREASE/DECREASE, as a percentage of
the synchronous motor speed, n
s
. If
INCREASE/ DECREASE is activated the
resulting reference will be increased /
decreased by the amount set in this
parameter.
Parameter Description
VLT
®
HVAC Drive Programming Guide
52
MG.11.CB.02 - VLT
®
is a registered Danfoss trademark
3
3
Содержание VLT
Страница 1: ...MAKING MODERN LIVING POSSIBLE Programming Guide VLT HVAC Drive...
Страница 230: ...www danfoss com drives MG11CB02 130R0318 MG11CB02 Rev 2010 09 10...
Страница 231: ......