Danfoss FC 300 Programming Manual page 88

Parameter Descriptions
3.8.6 6-5* Analog Output 1
Parameters for configuring the scaling and limits for analog
output 1, i.e. Terminal 42. Analog outputs are current outputs:
0/4 – 20 mA. Common terminal (terminal 39) is the same
terminal and has the same electrical potential for analog
3 3
common and digital common connection. Resolution on
analog output is 12 bit.
6-50 Terminal 42 Output
Option:
[0] No
*
operation
[52] MCO
0-20mA
[53] MCO
4-20mA
[100] Output
frequency
[101] Reference Par. 3-00 Reference Range [Min - Max] 0% = 0 mA;
[102] Feedback
[103] Motor
current
[104] Torque rel
to limit
[105] Torq
relate to
rated
[106] Power
[107] Speed
[108] Torque
[109] Max Out
Freq
88
FC 300 Programming Guide
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
par. 16-65 Analog Output 42 [mA].
When no signal on the analog output.
0 Hz = 0 mA; 100 Hz = 20 mA.
100% = 20 mA
Par. 3-00 Reference Range [-Max - Max] -100% = 0
mA; 0% = 10 mA; +100% = 20 mA
Value is taken from par. 16-37 Inv. Max. Current.
Inverter max. current (160% current) is equal to
20 mA.
Example: Inverter norm current (11 kW) = 24 A.
160 % = 38.4 A. Motor norm current = 22 A Read-
out 11.46 mA.
20 mA x 22 A
= 11.46 mA
A
38.4
In case the norm motor current is equal to 20
mA, the output setting of par. 6-52 Terminal 42
Output Max Scale is:
I VLT x
100
Max x
38.4 100
=
I Motor
22
Norm
The torque setting is related to setting in
par. 4-16 Torque Limit Motor Mode
The torque is related to the motor torque
setting.
Taken from par. 1-20 Motor Power [kW].
Taken from par. 3-03 Maximum Reference. 20 mA
= value in par. 3-03 Maximum Reference
Torque reference related to 160% torque.
In relation to par. 4-19 Max Output Frequency.
MG.33.M9.02 - VLT
6-50 Terminal 42 Output
Option:
[113] PID
Clamped
Output
[119] Torque %
lim
[130] Output
freq.
4-20mA
[131] Reference
4-20mA
[132] Feedback
4-20mA
[133] Motor
cur.
4-20mA
[134] Torq.%
lim 4-20
mA
[135] Torq.%
nom 4-20
mA
[136] Power
4-20mA
[137] Speed
4-20mA
[138] Torque
= 175 %
4-20mA
[139] Bus ctrl.
0-20 mA
[140] Bus ctrl.
4-20 mA
[141] Bus ctrl
0-20mA
t.o.
®
is a registered Danfoss trademark
Function:
0 Hz = 4 mA, 100 Hz = 20 mA
Par. 3-00 Reference Range [Min-Max] 0% = 4 mA;
100% = 20 mA
Par. 3-00 Reference Range [-Max-Max] -100% =
4mA; 0% = 12 mA; +100% = 20 mA
Value is taken from par. 16-37 Inv. Max. Current.
Inverter max. current (160% current) is equal to
20 mA.
Example: Inverter norm current (11 kW) = 24 A.
160 % = 38.4 A. Motor norm current = 22 A Read-
out 11.46 mA.
mA x A
16 22
mA
+ 4 = 13.17
A
38.4
In case the norm motor current is equal to 20
mA, the output setting of par. 6-62 Terminal
X30/8 Max. Scale is:
I VLT x
100
Max x
38.4 100
=
I Motor 22
Norm
The torque setting is related to setting in
par. 4-16 Torque Limit Motor Mode.
The torque setting is related to the motor torque
setting.
Taken from par. 1-20 Motor Power [kW]
Taken from par. 3-03 Maximum Reference. 20 mA
= Value in par. 3-03 Maximum Reference.
Torque reference related to 160% torque.
An output value set from fieldbus process data.
The output will work independently of internal
functions in the frequency converter.
An output value set from fieldbus process data.
The output will work independently of internal
functions in the frequency converter.
Par. 4-54 Warning Reference Low defines the
behaviour of the analog output in case of bus
time-out.
mA
= 175 %