01/02 AWB8230-1415GB
Programmable digital inputs
1to8
73
Analog input changeover (AT)
When the digital input configured as AT is active, you can change
over between analog inputs O and OI or between O and O2:
• O: 0 to +10 V,
• O2: –10 V to +10 V,
• OI: 4 to 20 mA.
Under PNU A001, enter the setpoint frequency input method. At
the default value of 01, terminals O, O2 and OI are used for
setpoint input.
X If it has not yet been correctly configured, set the PNU A001 to
01.
Under A005, specify whether activation of the AT input results in
a changeover between O and OI or between O and O2.
X Program one of the digital inputs 1 to 8 as AT by entering the
corresponding PNU (C001 to C008) to 16.
By default, AT is assigned to digital input 2.
The table below shows how you can link analog inputs O, O2 and
OI with PNU A005 and A006.
Figure 59: Digital input 5 configured as AT (setpoint definition
through current signal)
AT
P245
PNU Name Adjustable in RUN mode Value Function WE
Normal Extended
A005 AT selection – – 00 Changing over from O to OI 00
01 Changing over from O to O2
A006 O2 selection
– – 00 O2 signal only 00
01 Sum of signals at O2 and O/OI without direction reversal
02 Sum of signals at O2/O or OI with direction reversal
Main frequency
setpoint value
input
Input O2 as additive setpoint
frequency input?
Reversal with
O2?
Input AT
present?
A006 A005 Input AT
OYes YesYes 02 00 Off
01
No
Yes 01 00 Off
01
No No
Yes 00 00 Off
00 01
Add O + OI Yes Yes
No 00 – –
02
No
01
O2 No Yes
Yes 02 01 On
00
No
01
OI Yes Yes
Yes 02 00 On
Yes No
01
No No 00
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