Sensor Types
NAMUR Sensors, Dry Contacts
Detection level for On
> 2.1 mA
Detection level for Off
<1.2 mA
Channel Impedance
1kOhm ±10%
Wetting Voltage
8 VDC ±1 VDC
Isolation
Galvanically isolated according to EN 60079-11. Voltage peak value 375 VDC.
CHARM Power Req.
28 mA max @ 24 VDC ±10%
CHARM Heat Dissipation
0.57 W
Fault Detection capable
Guaranteed short circuit: <200 Ω, Guaranteed good status: 360 Ω to 19 kΩ, Guaranteed open circuit: > 40 kΩ
Configurable channel types
Discrete input - Dry contact or discrete state sensor changing <2 Hz, Pulse Count - Pulse train 0.1 Hz to 10 KHz, 50 µsec min pulse width