Ai1 Or Ai2 As A Pt100, Pt1000, Ptc Or Kty84 Sensor Input; Diil Input; Drive-To-Drive Link (Xd2D) - ABB ACS880-37 Hardware Manual

WARNING! As the inputs pictured above are not insulated according to
IEC 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, the I/O board terminals must be protected against contact
and must not be connected to other equipment or the temperature sensor must be
isolated from the I/O terminals.

AI1 or AI2 as a Pt100, Pt1000, PTC or KTY84 sensor input


Three Pt100/Pt1000/PTC sensors or one KTY84 sensor for motor temperature
measurement can be connected between an analog input and output as shown below.
(Alternatively, you can connect the KTY to an FIO-11 or FAIO-01 analog I/O extension
module or FEN-xx encoder interface module.) At the sensor end of the cable, leave the
shields unconnected or ground them indirectly via a high-frequency capacitor with a few
nanofarads, eg. 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.
1...3 × Pt100/Pt1000/PTC or 1 × KTY84
T T
T
1)
For AI1, set input type to voltage with switch AI1. For AI2, set input type with switch AI2. Set the
appropriate analog input unit to V (volt) in parameter group 12 Standard AI.
2)
Select the excitation mode in parameter group 13 Standard AO.
WARNING! As the inputs pictured above are not insulated according to
IEC 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, the I/O board terminals must be protected against contact
and must not be connected to other equipment or the temperature sensor must be isolated
from the I/O terminals.

DIIL input


On both the supply and inverter units, 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.

Drive-to-drive link (XD2D)


The drive-to-drive link is a daisy-chained RS-485 transmission line that allows basic
master/follower communication with one master drive and multiple followers.
Enable bus termination on the inverters at the ends of the drive-to-drive link by setting
switch D2D TERM on the control unit to ON. On intermediate inverters, disable bus
termination.
Control units of the drive 137
XAI
1)
AIn+
AIn-
XAO
2)
AOn
AGND