English (GB)
37
The reading is a percentage of the range between 0
and 200 % of the maximum permissible load at the
actual speed.
•
""Motor current""
The reading is a percentage of the range between 0
% and 200 % of the rated current.
•
""Limit 1 exceeded"" and ""Limit 2 exceeded""
This function is typically used for monitoring of
secondary parameters in the system. If the limit is
exceeded, an output, a warning or an alarm is
activated.
10.11 "Controller" (""Controller settings"")
The gain (Kp) and integral time (Ti) are preset from
factory. However, if the factory setting is not the
optimum setting, you can change the gain and the
integral time:
•
Set the gain (Kp) within the range from 0.1 to 20.
•
Set the integral-action time (Ti) within the range
from 0.1 to 3600 seconds. If you select 3600
seconds, the controller functions as a P
controller.
Furthermore, you can set the controller to inverse
control.
This means that if you increase the setpoint, the
speed is reduced. In the case of inverse control, set
the gain (Kp) within the range from -0.1 to -20.
10.12 ""Operating range""
Set the operating range as follows:
•
Set the minimum speed within the range from
fixed minimum speed to user-set maximum
speed.
•
Set the maximum speed within the range from
user-set minimum speed to fixed maximum
speed.
The range between the user-set minimum and
maximum speeds is the operating range. See fig.
.
Fig. 33
Example of minimum and maximum
settings
10.13 ""External setpoint function""
You can influence the setpoint by an external signal,
via one of the analog inputs or, if an advanced
functional module, type FM 300, is fitted, via one of
the Pt100/1000 inputs.
Fig. 34
Example of setpoint influence with
sensor feedback
Signal
range
"Motor current"
[%]
0
100
200
0-10 V
0 V
5 V
10 V
0-20 mA
0 mA
10 mA
20 mA
4-20 mA
4 mA
12 mA
20 mA
Signal
range
"Limit-exceeded function"
Output not
active
Output active
0-10 V
0 V
10 V
0-20 mA
0 mA
20 mA
4-20 mA
4 mA
20 mA
T
M
00
67
85
50
95
Before you can enable the function, you
must set one of the analog inputs or
Pt100/1000 inputs to ""External setpoint
function"".
See sections
T
M
06
41
65
16
15
Fixed maximum speed
User-set maximum
speed
"Operating range"
User-set minimum
speed
Fixed minimum speed
24 %
13 %
0 %
67 %
100 %
100
0
100 %
0
1.2
2
[bar]
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
Actual input
signal (60 %)
External
setpoint
signal
Setpoint
Sensor
max.
Sensor
min.
Actual
setpoint