4 Function description
BU 0210 en-3117 39
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4.4 "Teach - In“ – Function for saving positions
As an alternative to the direct input, parameterisation of the absolute setpoint position (position array)
can also be carried out via the function "Teach-In".
Two inputs are required for "Teach- In" via digital inputs or Bus IO In Bits. One input, or one of the
parameters P420… or 480must be parameterised to function 24 "Teach-In" and a further input must
be parameterised to function 25 "Quit Teach-In".
"Teach-In" is started with the "1" signal to the relevant input and remains enabled until the signal is
cancelled again.
On a change from "0" to "1" of the "Quit Teach-In" signal, the actual position value is saved as the
setpoint position in parameter P613 "Position". The position number or the position array element or
the position increment array is specified via the position specification (bit 0 to 5 position / increment
array) of the digital inputs or Bus IO In Bits in parameter P420 or P480 with one of the functions (55 to
58).
If no input is accessed (corresponds to position 0) the position number is generated via an internal
counter. The counter is increased after the adoption of each position.
Example
• Start "Teach-In" without position specification:
The internal counter has the value 1,
• Triggering of the function "Quit- Teach-In"
– Saving of the actual position in the first storage location (P613 [-01])
– Increase of the internal counter to 2
• Triggering of the function "Quit- Teach-In"
– Saving of the actual position in the first storage location (P613 [-02])
– Increase of the internal counter to 3
• etc.
As soon as a position is addressed via the digital inputs, the counter is set to this position.
As long as "Teach-In" is enabled, the frequency inverter can be controlled with enable signals and
frequency setpoints (identical to parameter P600 "Position Control" = "Off").
The function "Teach-In" can also be implemented via a serial interface or the Bus IO In Bits. For this, a
bus setpoint value (P546…) "Function Bus - Setpoints") must be set in the setting "Bus IO In Bits 0...7"
and the functions assigned to the corresponding bits under P4800 "Function Bus I/O In Bits" on the
relevant bus.
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