Danfoss VLT CDS 303 User Manual

6-14 Terminal 53 Low Ref./Feedb. Value
Range: Function:
Low Voltage and parameter 6-12 Terminal
53 Low Current.]
6-15 Terminal 53 High Ref./Feedb. Value
Range: Function:
Size related* []
Enter the analog input scaling value that
corresponds to the maximum reference
feedback value set in parameter 6-11 Terminal
53 High Voltage and parameter 6-13 Terminal 53
High Current.
3-72 Ramp 4 Ramp-down Time
Range: Function:
Size
related*
[ 0.01
- 3600
s]
Enter the ramp-down time, i.e. the
deceleration time from the rated motor
speed n
s
to 0 RPM. Choose a ramp-down
time such that no over-voltage arises in the
inverter due to regenerative operation of the
motor, and such that the generated current
does not exceed the current limit set in
parameter 4-18 Current Limit. The value 0.00
corresponds to 0.01 s in speed mode. See
ramp-up time in parameter 3-71 Ramp 4
Ramp-up Time.
Par . 3 − 72 = 
t
dec
 s xn
s
 RPM
ref  RPM
6.7.3 6-2* Analog Input 2
Parameters for conguring the scaling and limits for analog
input 2 (terminal 54).
NOTICE!
Analog input 53 is preset for usage with “open loop”
control on 0-10 V. Terminal 54 is preset for “Process
Loop” control using a pressure sensor AKS with a
pressure range of -1 : 12 bar.
6-20 Terminal 54 Low Voltage
Range: Function:
1.00V* [-10.0 - par.
6-11]
This analog input scaling value should
correspond to the minimum output
value of the pressure sensor
6-21 Terminal 54 High Voltage
Range: Function:
5.00V* [6-10 to 10 V] This analog input scaling value should
correspond to the maximum output
value of the pressure sensor.
6-22 Terminal 54 Low Current
Range: Function:
4.0mA * [0.0 to par. 6-13
mA]
This reference signal should
correspond to the minimum output
value of the pressure sensor.
6-23 Terminal 54 High Current
Range: Function:
20.0mA * [6-12 to 20 mA] This reference signal should
correspond to the maximum output
value of the pressure sensor.
6-24 Terminal 54 Low Ref./Feedb.
Range: Function:
-1 (bar) [Value] Enter the analog input scaling value that
corresponds to the minimum reference
feedback value set in parameter 3-02 Minimum
Reference.
6-25 Terminal 54 High Ref./Feedb.
Range: Function:
12 (bar) [Value ] Enter the analog input scaling value that
corresponds to the maximum reference
feedback value set in
parameter 3-03 Maximum Reference.
6-26 Terminal 54 Filter Time Constant
Range: Function:
0.001 s* [0.001 -
10 s]
NOTICE!
This parameter cannot be adjusted
while the motor is running.
Enter the time constant. This is a rst-
order
digital low pass lter time constant
for suppressing electrical noise in terminal
54. A high time constant value improves
dampening but also increases the time
delay through the lter.
6-50 Terminal 42 Output
Option: Function:
Select the function of Terminal 42 as an
analog current output. Depending on the
selection the output is either a 0-20 mA or
4-20 mA output. The current value can be
read out in LCP in parameter 16-65 Analog
Output 42 [mA].
[0] No operation There is no signal on the analog output.
[100] Output
frequency
0-20 mA
0 Hz = 0 mA; 100 Hz = 20 mA.
[101] Reference
0-20 mA
parameter 3-00 Reference Range [Min - Max]
0% = 0 mA; 100% = 20 mA
Parameter Descriptions Operating Instructions
MG34M422 Danfoss A/S © Rev. 2013-07-03 All rights reserved. 73
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Danfoss VLT CDS 303 Specifications

General

Brand	Danfoss
Model	VLT CDS 303
Category	DC Drives
Language	English