Mtr Temp Meas - ABB ACS800 Series Firmware Manual

98
No. Name/Value

35 MTR TEMP MEAS

35.01 MTR1 TEMP SEL
NOT IN USE
1xPT100
2xPT100
3xPT100
1..3 PTC
35.02 MTR1 TEMP ALM LVL
o
-10...5000 Ohm/ C (PTC/
Pt100)
35.03 MTR1 TEMP FLT LVL
o
-10...5000 Ohm/ C (PTC/
Pt100)
35.04 MTR2 TEMP SEL
35.05 MTR2 TEMP ALM LVL
35.06 MTR2 TEMP FLT LVL
Actual signals and parameters
Description
Motor temperature measurement. See sections
measurement through the standard I/O
temperature measurement through the analog I/O
46
Activates the motor 1 temperature measurement function and selects
the sensor type.
The function is inactive.
The function is active. The temperature is measured with one Pt 100
sensor. Analog output AO1 feeds constant current through the sensor.
The sensor resistance increases as the motor temperature rises, as
does the voltage over the sensor. The temperature measurement
function reads the voltage through analog input AI1 and converts it to
degrees centigrade.
The function is active. Temperature is measured using two Pt 100
sensors. See selection 1xPT100.
The function is active. Temperature is measured using three Pt 100
sensors. See selection 1xPT100.
The function is active. The temperature is supervised using one to
three PTC sensors. Analog output AO1 feeds constant current through
the sensor(s). The resistance of the sensor increases sharply as the
motor temperature rises over the PTC reference temperature (T
does the voltage over the resistor. The temperature measurement
function reads the voltage through analog input AI1 and converts it
into Ohms. The figure below shows typical PTC sensor resistance
values as a function of the motor operating temperature.
Temperature Resistance
Normal 0...1.5 kOhm
Excessive > 4 kOhm
Defines the alarm limit for motor 1 temperature measurement. The
alarm indication is given when the limit is exceeded.
Limit in °C or Ohms.
°C: 35.01 MTR1 TEMP SEL is 1xPT100, 2XPT100, 3XPT100.
Ohm: 35.01 MTR1 TEMP SEL is 1...3 PTC.
Defines the fault trip limit for motor 1 temperature measurement. The
fault indication is given when the limit is exceeded.
Limit in °C or Ohms.
°C: 35.01 MTR1 TEMP SEL is 1xPT100, 2XPT100, 3XPT100.
Ohm: 35.01 MTR1 TEMP SEL is 1..3 PTC.
See 35.01 MTR1 TEMP SEL.
See 35.02 MTR1 TEMP ALM LVL.
See 35.03 MTR1 TEMP FLT LVL.
Motor temperature
on page 44 and Motor
extensionon page
Ohm
4000
1330
550
100
FbEq
1
2
3
4
5
), as
ref
t
1 = 1 °C
1 = 1 °C
1...4
1 = 1 °C
1 = 1 °C