Danfoss Metasys N2 Programming Guide

3.5.5 3-8* Other Ramps
3-80 Jog Ramp Time
Range: Function:
Size
related*
[1 -
3600 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
parameter 1-25 Motor Nominal Speed). Ensure
that the resulting output current required for
the given jog ramp time does not exceed the
current limit in parameter 4-18 Current Limit.
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 =
t jog × nnom 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
Illustration 3.21 Jog Ramp Time
3-82 Starting Ramp Up Time
Range: Function:
Size
related*
[0.01 -
3600 s]
The ramp-up time is the acceleration time
from 0 RPM to the nominal motor speed
set in parameter 3-82 Starting Ramp Up
Time when [0] Compressor Torque is active
in parameter 1-03 Torque Characteristics.
3.5.6 3-9* Digital Pot.Meter
Use the digital potentiometer function 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 1 digital input
must be set to INCREASE or DECREASE.
3-90 Step Size
Range: Function:
0.10
%*
[0.01 -
200 %]
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 is increased/decreased by the
amount set in this parameter.
3-91 Ramp Time
Range: Function:
1
s
[0 -
3600 s]
Enter the ramp time, that is the time for adjustment
of the reference from 0% to 100% of the specied
digital potentiometer function (INCREASE, DECREASE
or CLEAR).
If increase/decrease is activated for longer than the
ramp delay period specied in parameter 3-95 Ramp
Delay, the actual reference is ramped up/down
according to this ramp time. The ramp time is
dened as the time spent to adjust the reference by
the step size specied in parameter 3-90 Step Size.
3-92 Power Restore
Option: Function:
[0] * O Resets the digital potentiometer reference to 0% after
power-up.
[1] On Restores the most recent digital potentiometer
reference at power-up.
3-93 Maximum Limit
Range: Function:
100 %* [-200 - 200
%]
Set the maximum permissible value for
the resultant reference. This is advisable if
the digital potentiometer is used for ne-
tuning of the resulting reference.
3-94 Minimum Limit
Range: Function:
0 %* [-200 - 200
%]
Set the minimum permissible value for the
resultant reference. This is advisable if the
digital potentiometer is used for ne-tuning
of the resulting reference.
Parameter Descriptions Programming Guide
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Danfoss Metasys N2 Specifications

General

Brand	Danfoss
Model	Metasys N2
Category	DC Drives
Language	English