ABB ACS880-07, Hardware Manual

Page: 93 / 274

connected to the drive's digital and analog inputs (typically low-voltage circuits) are
protected against contact and insulated with basic insulation from other low-voltage
circuits. The insulation must be rated for the same voltage level as the drive main circuit.
3. You can connect the sensor to an extension module with basic insulation (eg. FAIO-01)
or reinforced insulation (eg. FPTC-xx) between the sensor connector and the other
connectors of the module. See the table below for the sensor insulation requirement.
For sensor connection to the extension module, see its manual.
4. You can connect a sensor to an external thermistor relay the insulation of which is rated
for the same voltage level as the main circuit of the drive.
￭ Drive I/O, I/O extension and encoder interface modules
See
• section AI1 or AI2 as a Pt100, Pt1000, PTC or KTY84 sensor input (page 134)
• section DI6 as a PTC sensor input (page 134)
•
FPTC-01 thermistor protection module (L536) for ACS880 drives user's manual
(3AXD50000027750 [English])
• FPTC-02 ATEX-certified thermistor protection module Ex II (2) GD (L537+Q971)
for ACS880 drives user's manual
(3AXD50000027782 [English]).
This table shows what temperature sensor types you can connect to the drive I/O extension
modules as well as the insulation requirement for the sensor.
Temperature sensor insulation
requirement
Temperature sensor type Extension module
Pt100,
Pt1000
KTY PTC Insulation/Isolation Type
Reinforced insulation X X - Galvanic isolation between sensor
connector and other connectors
(including drive control unit con-
nector) FIO-11
Reinforced insulation - X X Galvanic isolation between sensor
connector and other connectors
(including drive control unit con-
nector) FEN-xx
Basic insulation. Connectors of
extension module other than
sensor connector must be left un-
connected.
X X X Basic insulation between sensor
connector and drive control unit
connector. No insulation between
sensor connector and other I/O
connectors. FAIO-01
No special requirement X X X Reinforced insulation between
sensor connector and other con-
nectors (including drive control
unit connector) FPTC-xx
Note:
The inaccuracy of the drive analog inputs for Pt100 sensors is 10 °C (18 °F). If a better
accuracy is needed, use the FAIO-01 analog I/O extension module (L525).
Guidelines for planning the electrical installation 93