Danfoss VLT HVAC Drive Instruction Manual page 83

VLT ® HVAC Drive Instruction Manual
Function:
Select the reference input to be used for the
first reference signal. Par. 3-15, 3-16 and 3-17
define up to three different reference signals.
The sum of these reference signals defines the
actual reference.
This parameter cannot be adjusted while the
motor is running.
3-16
Value:
No function
Analog input 53
Analog input 54
Frequency input 29
Frequency input 33
Digital pot.meter
Analog input X30-11
Analog input X30-12
Analog Input X42/1
Analog Input X42/3
Analog Input X42/5
Ext. Closed-loop 1
Ext. Closed-loop 2
Ext. Closed-loop 3
Function:
Select the reference input to be used for the
second reference signal. Par. 3-15, 3-16 and
3-17 define up to three different reference
signals. The sum of these reference signals
defines the actual reference.
This parameter cannot be adjusted while the
motor is running.
4-10
Value:
Clockwise
Both directions
Function:
Selects the motor speed direction required.
When par. 1-00
Reference 2 Source
Motor Speed Direction
Configuration Mode is set to
MG.11.A4.22 - VLT ® is a registered Danfoss trademark
6. How to program the adjustable frequency
Closed-loop [3], the parameter default is
changed to Clockwise
4-56 Warning Feedback Low
Value:
-999999.999 -
999999.999
Function:
Enter the lower feedback limit. When the
feedback falls below this limit, the display
reads Feedb Low. The signal outputs can be
programmed to produce a status signal on
[0]
terminal 27 or 29, and on relay output 01 or
[1]
02.
[2]
[7]
[8]
[20]
4-57 Warning Feedback High
[21]
Value:
[22]
Par. 4-56 - 999999.999
[23]
Function:
[24]
Enter the upper feedback limit. When the
feedback exceeds this limit, the display reads
[25]
Feedb High. The signal outputs can be pro-
[30]
grammed to produce a status signal on termi-
[31]
nal 27 or 29, and on relay output 01 or 02.
[32]
4-64 Semi-Auto Bypass Feature
Value:
Off
Enabled
Function:
Enabled
Select to start the semi-automatic by-
pass set-up and continue with the procedure
described above.
[0]
5-01 Terminal 27 Mode
[2]
Value:
Input
Output
drive
[0].
-999999.999
999999.999
[0]
[1]
[0]
[1]
83
6