ABB ACQ580-34, Руководство по оборудованию

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￭
Connection examples of two-wire and three-wire sensors to analog
input (AI2)
Note: The maximum capability of the auxiliary voltage output (24 V DC [250 mA]) must not
be exceeded.
An example of a two-wire sensor/transmitter supplied by the drive auxiliary voltage output
is shown below. Set the input signal to 4…20 mA, not 0…20 mA.
4…20 mA
+
-
P
I
...
AI2
AGND
+24V
DGND
An example of a three-wire sensor/transmitter supplied by the drive auxiliary voltage output
is shown below.The sensor is supplied through its current output and the drive feeds the
supply voltage (+24 V DC). Thus the output signal must be 4…20 mA, not 0…20 mA.
4…20 mA
+
-
P
I
...
AI2
AGND
+24V
DGND
OUT
￭
DI5 as frequency input
For setting the parameters for the digital frequency input, see the firmware manual.
￭
DI6 as PTC input
If DI6 is used as a PTC input, see firmware manual for how to set parameters accordingly.
Note: If DI6 is used as a PTC input, the wiring and the PTC sensor need to be double
isolated. Otherwise the CMOD-02 I/O extension module must be used.
1
...
+24V
DI6
+ t ° + t ° + t ° + t ° + t °
+ t °
One to six PTC thermistors connected in series 1
￭
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.
116 Control unit