Ai1 And Ai2 As Pt100, Pt1000, Ptc And Kty84 Sensor Inputs (Xai, Xao) - ABB ACS880-04 Hardware Manual

110 Installation instructions

AI1 and AI2 as Pt100, Pt1000, PTC and KTY84 sensor inputs (XAI, XAO)

Three Pt100, Pt1000 or PTC sensors or one KTY84 sensor for motor temperature
measurement can be connected between an analog input and output as shown below. Do
not connect both ends of the cable shields directly to ground. If a capacitor cannot be used
at one end, leave that end of the shield unconnected.
1...3 × Pt100/Pt1000/PTC or 1 × KTY
T T
1. Set the input type to voltage with switch J1 for analog input AI1or with J2 for analog input 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.
T
XAI
1)
AIn+
AIn-
XAO
2)
AOn
AGND