ground them indirectly via a high-frequency capacitor with a few nanofarads, for example
3.3 nF / 630 V. The shield can also be grounded directly at both ends if they are in the
same ground line with no significant voltage drop between the end points.
...
AI1+
AI1-
AO1
AGND
2
1
3
T
T
T
One, two or three Pt100, Pt1000 or PTC sensors; or one KTY84 sensor
1
Set the input type to voltage with the appropriate switch or jumper on the control unit. Make
the corresponding setting in the control program in parameter group
12 Standard AI
.
2
Select the excitation mode in parameter group
13 Standard AO
.
3
WARNING!
As the inputs pictured above are not insulated according to IEC/EN 60664, the
connection of the motor temperature sensor requires double or reinforced insulation
between motor live parts and the sensor. If the assembly does not fulfill the
requirement, protect the I/O board terminals against contact and do not connected
them to other equipment, or isolate the temperature sensor from the I/O terminals.
Make sure that the current does not exceed the maximum allowed current through
the Pt100/Pt1000 sensor.
■
DIIL input
The DIIL input is used for the connection of safety circuits. The input is parametrized to
stop the unit when the input signal is lost.
Note:
This input is NOT SIL or PL certified.
■
The XD2D connector
The XD2D connector provides an RS-485 connection that can be used for
• basic master/follower communication with one master drive and multiple followers,
• fieldbus control through the embedded fieldbus interface (EFB), or
• drive-to-drive (D2D) communication implemented by application programming.
See the firmware manual of the drive for the related parameter settings.
Enable bus termination on the units at the ends of the drive-to-drive link. Disable bus
termination on the intermediate units.
134 Control units of the drive
Summary of Contents for ACS880-11
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 11 drives Hardware manual ...
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Page 225: ... Declarations of conformity The Safe torque off function 225 ...