Lenze i550

7.4.1 Example: Change-over from keypad setpoint to AI1/AI2 setpoint
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The keypad is set as standard setpoint source.
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The switch S1 starts the motor in the forward direcon of rotaon. The switch S1 in the
inial posion stops the motor again.
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The switch S2 switches the direcon of rotaon.
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The switch S3 acvates analogue input 1 as setpoint source.
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The switch S4 acvates analogue input 2 as setpoint source.
If S3 and S4 are actuated at the same me, the analogue input 1 is acve as set-
point source since the digital input 3 assigned to this funcon has a higher prior-
ity than the digital input 4.
Connecon plan Funcon
GND AI1 AI2 AO1
10V 24V DI1 DI2 DI3 DI4 DI5 DO1
X3
S1 S2 S3 S4
1k ...10k
R1
R2
0 ... 10 V
Potenometer R1 Frequency setpoint selecon via AI1
Potenometer R2 Frequency setpoint selecon via AI2
Switch S1 Run
Switch S2 Reverse rotaonal direcon
Switch S3 Acvate AI1 setpoint
Switch S4 Acvate AI2 setpoint
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]
0x2631:013 (P400.13) Reverse rotaonal direcon Digital input 2 [12]
0x2631:014 (P400.14) Acvate AI1 setpoint Digital input 3 [13]
0x2631:015 (P400.15) Acvate AI2 setpoint Digital input 4 [14]
0x2631:018 (P400.18) Acvate preset (bit 0) Not connected [0]
0x2824 (P200.00) Control selecon Flexible I/O conguraon [0]
0x2838:003 (P203.03) Stop method Standard ramp [1]
0x2860:001 (P201.01) Frequency control: Default setpoint source Keypad [1]
Conguring the frequency control
Changing the setpoint source during operaon
Example: Change-over from keypad setpoint to AI1/AI2 setpoint
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