286 Parameters
Ni1000 Ni1000 sensor connected to the analog input selected by
parameter 35.24 Temperature 2 AI source and an analog
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 to V (volt).
• In parameter group 13 Standard AO, set the source
selection parameter of the analog output to Temp sensor 1
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.
16
PTC analog I/O PTC sensor connected to analog input selected by parameter
35.24 Temperature 2 AI source and an analog output.
The required settings are the same as with selection KTY84
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.
20
PTC AI/DI Voltage
Divider tree
PTC sensor connected to the analog input selected by
parameter 35.24 Temperature 2 AI source. A special voltage
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 KTY84
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 35.03 shows PTC
resistance in ohms, not motor temperature even the
parameter name and unit still refer to temperature.
23
35.22 Temperature 2 fault
limit
Defines the fault limit for temperature supervision function 2.
When measured temperature 1 exceeds the limit, the drive
trips on fault 4982 External temperature 2.
The unit is selected by parameter 96.16 Unit selection.
130 °C or
266 °For
4500 ohm
-60…5000 °C or
-76…9032 °F or
0...5000 ohm
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).
1 = 1 unit
No. Name/Value Description Def/FbEq16
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