Danfoss VLT CDS 303, Руководство по эксплуатации

Страница: 76 / 172

6-50 Terminal 42 Output
Option: Function:
parameter 3-00 Reference Range [-Max - Max]
-100% = 0 mA; 0% = 10 mA; +100% = 20
mA
[103] Motor
current 0-20
mA
Value is taken from parameter 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
38 . 4 A
= 11 . 46 mA
In case the norm motor current is equal to
20 mA, the output setting of
parameter 6-52 Terminal 42 Output Max Scale
is:
I
VLT
Max
x 100
I
Motor
Norm
= 38 . 4 x 100
22
= 175 %
[104] Torque rel to
lim 0-20 mA
The torque setting is related to setting in
parameter 4-16 Torque Limit Motor Mode
[105] Torque rel to
rated motor
torque 0-20
mA
The torque is related to the motor torque
setting.
[106] Power 0-20
mA
Taken from parameter 1-20 Motor Power
[kW] .
[107] Speed 0-20
mA
Taken from parameter 3-03 Maximum
Reference . 20 mA = value in
parameter 3-03 Maximum Reference
[108] Torque ref.
0-20 mA
Torque reference related to 160% torque.
[109] Max Out
Freq 0-20
mA
In relation to parameter 4-19 Max Output
Frequency .
[134] Torque% lim.
4-20 mA
The torque setting is related to setting in
parameter 4-16 Torque Limit Motor Mode .
[135] Torque%
nom 4-20
mA
The torque setting is related to the motor
torque setting.
[141] Bus ctrl. 0-20
mA, timeout
parameter 4-54 Warning Reference Low
defines the behavior of the analog output in
case of bus time-out.
[142] Bus ctrl. 4-20
mA, timeout
parameter 4-54 Warning Reference Low
defines the behavior of the analog output in
case of bus time-out.
[150] Max Out
Freq 4-20
mA
In relation to parameter 4-19 Max Output
Frequency .
[119] Torque %
lim
[149] Torque %
lim 4-20mA
Analog output at zero torque = 12 mA.
Motoric torque will increase the output
6-50 Terminal 42 Output
Option: Function:
current to max torque limit 20 mA (set in
parameter 4-16 Torque Limit Motor Mode ).
Generative torque will decrease the output
to torque limit Generator Mode (set in
parameter 4-17 Torque Limit Generator Mode )
Ex: parameter 4-16 Torque Limit Motor Mode :
200% and parameter 4-17 Torque Limit
Generator Mode : 200%. 20 mA = 200%
Motoric and 4 mA = 200% Generatoric.
0mA 12 mA 20 mA 4mA
Par 4-17
(200%)
Par 4-16
(200%)
0% Torque
130BB372.10
Figure 6.8
[0]
*
No operation When no signal on the analog output.
[52] MCO
0-20mA
[53] MCO
4-20mA
[100] Output
frequency
0 Hz = 0 mA; 100 Hz = 20 mA.
[101] Reference Parameter 3-00 Reference Range [Min - Max]
0% = 0 mA; 100% = 20 mA
Parameter 3-00 Reference Range [-Max - Max]
-100% = 0 mA; 0% = 10 mA; +100% = 20
mA
[102] Feedback
[103] Motor
current
Value is taken from parameter 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 =
22A Read-out 11.46 mA.
I
VLT
Max
x 100
I
Motor
Norm
= 38 . 4 x 100
22
= 175 %
In case the norm motor current is equal to
20 mA, the output setting of
parameter 6-52 Terminal 42 Output Max Scale
is:
I
VLT
Max
x 100
I
Motor
Norm
= 38 . 4 x 100
22
= 175 %
[104] Torque rel to
limit
The torque setting is related to setting in
parameter 4-16 Torque Limit Motor Mode
[105] Torq relate
to rated
The torque is related to the motor torque
setting.
[106] Power Taken from parameter 1-20 Motor Power
[kW] .
[107] Speed Taken from parameter 3-03 Maximum
Reference . 20 mA = value in
parameter 3-03 Maximum Reference
Parameter Descriptions
VLT
®
Compressor Drives CDS 302/CDS 303
74 Danfoss A/S © Rev. 2013-07-03 All rights reserved. MG34M422
6 6