ABB ACS560 Firmware Manual page 286

286 Parameters
No. Name/Value
Ni1000
PTC analog I/O
PTC AI/DI Voltage
Divider tree
35.22 Temperature 2 fault
limit
-60...5000 °C or
-76...9032 °F or
0...5000 ohm
Description
Ni1000 sensor connected to the analog input selected by
parameter 35.24 Temperature 2 AI source
output.
The following settings are required:
• Set the hardware jumper or switch related to the analog
input to U (voltage). Any change must be validated by a
control unit reboot.
• Set the appropriate analog input unit selection parameter
in group 12 Standard AI
• In parameter group 13 Standard
selection parameter of the analog output to
excitation.
The analog output feeds a constant current through the
sensor. As the resistance of the sensor increases along with
its temperature, the voltage over the sensor increases. The
voltage is read by the analog input and converted into
degrees.
PTC sensor connected to analog input selected by parameter
35.24 Temperature 2 AI source
The required settings are the same as with selection
analog I/O.
Note: With this selection, the control program converts the
analog signal to PTC resistance value in ohms and shows it
in parameter 35.02 The parameter name and unit still refer to
temperature.
PTC sensor connected to the analog input selected by
parameter 35.24 Temperature 2 AI
divider connection must be in use instead of the normal PTC
connection. The voltage divider connection uses the
terminals +10 V, digital input and analog input. See the drive
hardware manual for the actual connection.
This selection makes it possible to connect the PTC when no
analog output is available.
The required settings are same as with selection
analog I/O.
Notes:
• Make sure that the digital input that you connect to this
voltage divider circuit is not used for any other purpose in
the control program.
• With this selection, the parameter
resistance in ohms, not motor temperature even the
parameter name and unit still refer to temperature.
Defines the fault limit for temperature supervision function 2.
When measured temperature 1 exceeds the limit, the drive
trips on fault 4982 External temperature
The unit is selected by parameter
Fault limit for temperature monitoring function 2.
Note: If the measured temperature source selection (35.21)
is PTC analog I/O or PTC AI/DI Voltage divider tree, the
motor thermal protection function converts the analog input
signal (35.24) to PTC resistance value (ohms). Also this limit
is then a resistance value even the parameter name and unit
refer to motor temperature (°C or °F). You cannot change the
unit to ohm by the time being (96.16).
and an analog
to V (volt).
AO, set the source
Temp sensor 1
and an analog output.
source. A special voltage
KTY84
35.03 shows PTC
2.
96.16 Unit selection.
Def/FbEq16
16
20
KTY84
23
130 °C or
266 °For
4500 ohm
1 = 1 unit