10/05 AWB8230-1541GB
Motor control
91
Reference value control (AT)
With the AT command you can enable manual selection of analog
reference sources.
X Configure one of the digital inputs 1 to 5 as AT by entering the
value 16 under the corresponding PNU (C001 to C005).
When the digital input which has been configured as AT is active,
the reference value is defined by the current flow (4 to 20 mA) at
terminal OI. If however the AT input is inactive, the reference value
is defined by the voltage present (0 to 10 V) at terminal O.
The table below shows the selection of analog reference value
inputs depending on the AT command and PNU A005.
PNU Name RUN b031
= 10
Value Function DS
A005 Analog input –
selection (AT)
– – On active AT signal (a PNU C001 = 16) a changeover takes place between:
00 analog inputs O and/or OI 00
01 analog inputs O and OI (digital input is ignored)
02 Analog input O or potentiometer (keypad)
03 Analog input OI or potentiometer (keypad)
PNU A005 PNU C001 to
C006
Digital inputs 1 to 6 Analog input selection
00 (DS) AT (function not
enabled)
– [O] = 0 … +10 V H
and/or
[OI] = 4 … 20 mA H
16 = AT OFF [O] = 0 … +10 V H
ON [OI] = 4 … 20 mA H
01 16 = AT (ignored) Sum [O] and [OI] Example:
Digital input 5 with function AT
02 16 = AT OFF [O] = 0 … +10 V H
ON Potentiometer of the LCD keypad
03 16 = AT OFF [OI] = 4 … 20 mA H
ON Potentiometer of the LCD keypad
AT
P245
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