Lenze E82EV752K4C - Fig. 15.9-1 Power Control Principle Example: Fan

Power control (torque limitation)
15
Application examples
15.9
L
15.9-2
EDS82EV903-1.0-11/2002
l
Basic settings.
l Control mode selection: C0014 ≠ 5! (¶ 10.3-1)
l
Torque limit value configuration: Assign C0412/6.
l Speed setpoint configuration: Assign C0412/1.
)
))
) Note!
l Set the max. output frequency C0011 for the max. permissible
speed. Thus the speed does not have a limiting effect, the drive
is constantly running at the set torque limit.
l The torque limit can be indicated under C0047.
l Possibilities to select speed and torque limits: (¶ 10.8-1 ff)
l With standard I/O, the speed setpoint must be selected via PC,
keypad, JOG frequency or the function ”Motor potentiometer”
because there is only one analog input available.
l Acceleration time and moment of inertia require a torque
reserve.
l Power control should not be used with group drives.
8200
0
1
2
3
4
5
Fig. 15.9-1 Power control principle example: Fan
0
Cold, heavy air
1
Warm, light air
2
Fans
3
Mass flow m = constant
4
M = Moment
5
f = Frequency
8200
8200 mot e c or 8200 vector
Application-specific
configuration