Lenze i550

6.4.1 Example: Change-over from terminal control to keypad control
•
The control is executed primarily via the I/O terminals: Switch S1 serves to start and stop
the motor.
•
Switch S2 serves to oponally change over to local keypad control. In case of acvated key-
pad control, the motor can only be started via the keypad key. However, the condion
is that switch S1 is closed.
•
If switch S1 is opened again or the keypad key is pressed, the motor is stopped (irre-
specve of the acve control source).
•
For details of the keypad control of the inverter, see the chapter "Keypad operang mode".
^ 551
Connecon plan Funcon
GND AI1 AI2 AO1
10V 24V DI1 DI2 DI3 DI4 DI5 DO1
X3
S1 S2
1k ...10k
0 ... 10 V
R1
Potenometer R1 Frequency setpoint selecon
Switch S1 Run
Switch S2 Acvate keypad control
Parameter Designaon Seng for this example
0x2631:001 (P400.01) Enable inverter Constant TRUE [1]
0x2631:002 (P400.02) Run Digital input 1 [11]
0x2631:004 (P400.04) Reset fault Not connected [0]
0x2631:012 (P400.12) Acvate keypad control Digital input 2 [12]
0x2824 (P200.00) Control selecon Flexible I/O conguraon [0]
Start, stop and rotang direcon commands
Changing the control source during operaon
Example: Change-over from terminal control to keypad control
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