ABB TC512V1 3BSE018059R1 Modem
Figure 3-9 NDIO-02 terminal designations.
Cabling With 24 V d.c. signals, a twisted pair cable with an overall screen is
recommended. The cable screens should be earthed to the rail onto
which the module is mounted. The rail must be properly earthed. (See
page 3-2.)
Note: Do not route the signal cables parallel to power cables.
For faster input with a DC signal, the hardware filter on digital input DI1
can be disabled using the node number selection DIP switch. This,
however, reduces the noise immunity of the input.
Note: Always have the hardware filtering enabled when using an AC
input signal.
Programming The communication between the module and the drive is activated by a
drive parameter. After activation, the NDIO replaces certain standard
inputs. See the Firmware Manual, Parameter Group 98.
Users of Standard Application Program versions up to 3.0 should refer
to Appendix D for a listing of related drive parameters.
Note: The new settings take effect only the next time the module is
powered up.
NDIO Module
Replacement
An NDIO-02 can be used to replace a faulty NDIO-01. For reference,
the differences between the two types are listed in Appendix D.

The operating mode of the analogue inputs can be selected using the
node number selection DIP switch (actuator 7). The drive parameters
must be set accordingly.
In bipolar mode, the analogue inputs can handle positive and negative
signals. The resolution of the A/D conversion is 11 data bits (+ 1 sign
bit). The way the drive interprets the negative range of the inputs
depends on the settings of the drive. See the Firmware Manual.
In unipolar mode, the analogue inputs can handle positive signals only.
The resolution of the A/D conversion is 12 data bits.
The outputs of the NAIO-03 are always unipolar.
The following table shows the settings for the NAIO-03 mode switch
and the module activation parameter for the ACS 600 Standard
Application Program. (Users of other application programs should refer
to the drive manuals.)
Mode DIP Switch Setting Input Signal Type
Bipolar
(Default)
±0(4) … 20 mA
±0(2) … 10 V
±0 … 2 V
Unipolar
0(4) … 20 mA
0(2) … 10 V
0 … 2 V
Standard Application Program Version
DIP Switch
Setting 2.8 to 3.0b 3.0c or later
Bipolar Not applicable
OK
(Par. 98.06 setting:
NAIO-02 or BIPOLAR)
Unipolar OK
(Par. 98.6 setting: YES)
OK
(Par. 98.06 setting:
NAIO-01 or UNIPOLAR)