NORD Drivesystems BU0210 - Manual (Page 25)

3 Function description
BU 0210 GB Subject to technical amendments 25
3.3.4 Bus - Specification of absolute setpoint via field bus
If the setting [3] is parameterised in parameter P610 "Setpoint Mode", the specification of the position setpoint
is made exclusively via a field bus system. The setting of the field bus system is parameterised in parameter
P509 "Interface". For the bus setting, the functions of the digital inputs as well as the Bus IO In Bits for the
specification of the position from parameter P631 "Position" / position array elements are not enabled.
3.3.5 Bus increments – specification of relative setpoint via field bus
If the setting [4] for "Bus Increments" is parameterised in parameter P610 "Setpoint Mode", the specification of
the relative position setpoint is made via a field bus. The adoption of the setpoint is performed with the
command "Sync" for the position array pointer. The adoption of the bus increment is carried out on the change
of flank from "1" to "0" of Sync for the position array pointer command.
3.4 Teach - In function via digital inputs or Bus I/O In Bits
As an alternative to the direct input, the 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[01]…[04] or. P480 must 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 signal "Quit Teach-In", the
current position setpoint is saved 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 3 position (increment)
array) of the digital inputs or Bus IO In Bits in parameter P420[01]...[04] or P480 with one of the functions [55
to 58] "Bit 0-3 for Position (Increment) Array". 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. At
the start of the "Teach-In" with specified position 0 the counter is at 1. On adoption of the value with "Quit
Teach-In" the counter is increased. As soon as a position is addressed via the digital inputs, the counter is set
to this position.
As long as the "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[01] ...[03] "Function Bus - Setpoints") must be set in the setting "Bus IO In Bits 0...7" and
the functions assigned to the corresponding bits under P480 "Function Bus I/O In Bits" on the relevant bus.
NOTE: For further details of the possible functionality settings, please refer to the relevant parameter
description in the section "Parameter Settings".