Danfoss VLT Series Programming Manual page 142

Parameter Description
21-10 Ext. 1 Ref./Feedback Unit
Option: Function:
[73] kPa
[74] m WG
[75] mm Hg
[80] kW
[120] GPM
[121] gal/s
[122] gal/min
[123] gal/h
[124] CFM
[125] ft³/s
[126] ft³/min
[127] ft³/h
[130] lb/s
[131] lb/min
[132] lb/h
[140] ft/s
[141] ft/min
[145] ft
[160] °F
[170] psi
[171] lb/in²
[172] in WG
[173] ft WG
[174] in Hg
[180] HP
21-11 Ext. 1 Minimum Reference
Range:
0.000 [ -999999.999 - par.
ExtPID1Unit 21-12 ExtPID1Unit]
*
21-12 Ext. 1 Maximum Reference
Range:
100.000 [ par. 21-11 -
ExtPID1Unit 999999.999
*
ExtPID1Unit]
NOTE
Always set the desired value for 21-12 Ext. 1 Maximum
Reference before setting the values for the PID controller in
parameter group 20-9*.
®
VLT HVAC Drive Programming Guide
Function:
Select the minimum
for the Closed Loop 1
Controller.
Function:
Select the maximum for the
Closed Loop 1 Controller.
The dynamics of the PID
controller will depend on
the value set in this
parameter. Please see also
21-21 Ext. 1 Proportional
Gain.
®
MG.11.CC.02 - VLT is a registered Danfoss trademark
21-13 Ext. 1 Reference Source
Option: Function:
This parameter defines which input
on the frequency converter should be
treated as the source of the reference
signal for the Closed Loop 1
Controller. Analog input X30/11 and
Analog input X30/12 refer to inputs
on the General Purpose I/O.
[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
21-14 Ext. 1 Feedback Source
Option: Function:
This parameter defines which input
on the frequency converter should
be treated as the source of the
feedback signal for the Closed Loop
1 controller. Analog input X30/11
and Analog input X30/12 refer to
inputs on the General Purpose I/O.
[0] No function
*
[1] Analog input 53
[2] Analog input 54
[3] Pulse input 29
[4] Pulse input 33
[7] Analog input X30/11
[8] Analog input X30/12
[9] Analog Input X42/1
[10] Analog Input X42/3
[11] Analog Input X42/5
[15] Analog Input X48/2
[100] Bus feedback 1
[101] Bus feedback 2
[102] Bus feedback 3
3 3
141