ABB ACH580-04, Hardware Manual

Page: 113 / 242

￭
AI1 and AI2 as Pt100, Pt1000, Ni1000, KTY83 and KTY84 sensor inputs
(X1)
Sensors for motor temperature measurement can be connected between an analog input
and output, an example connection is shown below. Leave the other end of the shield
unconnected or ground it indirectly via a few nanofarads high-frequency capacitor, 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
AGND
AO1
AGND
2
1
3
T T T
One, two or three Pt100 sensors; one, two or three Pt1000 sensors; or one Ni1000, KTY83 or KTY84
sensor 1
Set the input type to voltage for analog input AI1 or analog input AI2 with parameters. 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 . 3
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 this 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.
￭
Safe torque off (X4)
For the drive to start, both connections (+24 V DC to IN1 and +24 V DC to IN2) must be
closed. By default, the terminal block has jumpers to close the circuit.
Remove the jumpers before connecting an external Safe torque off circuitry to the drive.
See also chapter
The Safe torque off function (page 171) .
Note: Only 24 V DC can be used for STO. Only PNP input configuration can be used.
Control unit 113