ABB ACQ80-04 Firmware Manual page 122

122 Parameters
No. Name/Value
1 × Pt100 analog
I/O
2 × Pt100 analog
I/O
3 × Pt100 analog
I/O
Direct temperature
35.12 Temperature 1 fault
limit
-60...5000 °C or
-76...9032 °F
35.13 Temperature 1
warning limit
-60...5000 °C or
-76...9032 °F
35.14 Temperature 1 AI
source
Not selected
AI1 actual value
AI2 actual value
Other
35.21 Temperature 2
source
Disabled
Description
Pt100 sensor connected to a standard analog input selected
by parameter 35.14 Temperature 1 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.
As selection 1 × Pt100 analog
connected in series. Using multiple sensors improves
measurement accuracy significantly.
As selection 1 × Pt100 analog
connected in series. Using multiple sensors improves
measurement accuracy significantly.
The temperature is taken from the source selected by
parameter 35.14 Temperature 1 AI
source is assumed to be degrees Celsius.
Defines the fault limit for temperature supervision function 1.
When measured temperature 1 exceeds the limit, the drive
trips on fault 4981 External temperature
The unit is selected by parameter
Fault limit for temperature monitoring function 1.
Defines the warning limit for temperature supervision
function 1. When measured temperature 1 exceeds the limit,
warning A491 External temperature 1
The unit is selected by parameter
Warning limit for temperature monitoring function 1.
Specifies the analog input when the setting of
Temperature 1 source requires measurement through an
analog input.
None.
Analog input AI1 on the control unit.
Analog input AI2 on the control unit.
Source selection (see Terms and abbreviations
Selects the source from which measured temperature 2 is
read.
Usually this source is from a sensor connected to the motor
controlled by the drive, but it could be used to measure and
monitor a temperature from other parts of the process as long
as a suitable sensor is used as per the selection list.
None. Temperature monitoring function 2 is disabled.
and an analog
to V (volt).
AO, set the source
Temp sensor 1
I/O, but with two sensors
I/O, but with three sensors
source. The value of the
1.
96.16 Unit selection.
is generated.
96.16 Unit selection.
35.11
on page 64).
Def/FbEq16
5
6
7
11
130 °C or
266 °F
1 = 1 unit
110 °C or
230 °F
1 = 1 unit
Not selected
0
1
2
-
Disabled
0