198 • I/O modules
Analog Inputs 750-469, /000-XXX
Modular I/O System
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In order to compensate the offset voltage at the clamping point, a cold junction
thermocouple compensation calculation is carried out. The circuit contains a
temperature measuring sensor at the ‘CAGE CLAMP
’ connection and consi-
ders the temperature offset voltage when calculating the measured value.
Operating mode and Temperature range:
Operating mode
Temperature range
Item-No.:
Type K
-100°C...1370°C (Standard)
750-469
Type S
0°C...+1700°C
750-469/000-001
Type T
-100°C...+400°C
750-469/000-002
mV-meter
-120 mV...+120 mV
750-469/000-003
Type J
-100°C...+1200°C
750-469/000-006
Type E
-100°C...+1000°C
750-469/000-008
Type L
-25°C...+900°C
750-469/000-012
Tabel: Operating mode, Temperature range and Item number of the variations
Attention
The operating mode as mV meter in the range of -120mV to +120mV is only
available for hardware version X X X X 3 A 0 2- - - - and above. In older
versions, the operating mode as mV meter is in the range of 0mV to 120mV!
LED functions:
green LED: Function
ON: Normal
OFF: Watchdog-Timer Overflow
If the PLC does not receive data for 100 ms the green LED
turns off.
Red LED: Error
ON: Over- or underrange or broken wire
OFF: voltage is in the measuring range