Sensor inputs
The following sensor types are supported
Thermocouples:
Type E -270.... .1000°C
Type J -210.... .1200°C
Type K -270... .1372°C .1372°C
Model T -270... .400°C .400°C
Signal voltage range: ±500mV
RTD:
PT100 (α=0.00385) -200.... .850°C
PT100 (α=0.00392)-200...660°C .660°C
Ni100 (α=0.00549)-60... .180°C .180°C
Ni120 (α=0.00672) -80...260°C .260°C
Cu10 (α=0.00427)-200...260°C .260°C
Measurable resistor range: 0..... .1000kΩ
These inputs are electrically isolated from the rest of the monitoring circuit.
Sensor power supply
Each channel is equipped with an integrated sensor power supply.
Thermocouples:
Bias voltage for isolating thermocouples
RTD: Constant current supply: 250μA .... . 1mA
Voltage: 4V
Power supply
Redundant power supply via two power inputs (decoupling diodes).
At least one power input is required for module power supply.
Supply voltage: 24 (18.... .31.2) VDC according to IEC 654-2; class DC4
Power consumption: max. 8 W
Control inputs
All channels have two logic binary inputs for the following two functions:
Reset of the maximum measured temperature
Reset latching relay
Limit blocking
The control inputs are designed for 24V logic (active low input)
Low level: 0.... .3V; high level: 13.... .48V
Input resistance: ≥30 kΩ
Current output
Nominal range:
0/4... .20 mA or 20... .4/0 mA
Open and short circuit protection
Permissible load ≤ 500 Ω
Resolution 16 bit
Optocoupler outputs
Six collector/emitter outputs
Uce = 48 VDC
Ice = 100 mA
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