| Number of channels per module |
8 |
| Distribution of channels into groups |
2 groups of 4 channels each |
| Connections of the channels I0 to I3 |
Terminals 1.0 to 1.7 and terminals 2.0 to 2.7 |
| Connections of the channels I4 to I7 |
Terminals 3.0 to 3.7 and terminals 4.0 to 4.7 |
| Input type |
Bipolar (not with current or Pt100/Pt1000/Ni1000/Cu50/resistor) |
| Electrical isolation |
Against internal supply and other modules |
| Configurability |
Digital input, -50 … +50 mV, -500 … +500 mV, -1 … +1 V, -5 … +5 V, -10 … +10 V, 0 … +5 V, 0 … +10 V, -20 … +20 mA, 0 … 20 mA, 4…20 mA, Pt100, Pt1000, Ni1000, Cu50, resistor, thermocouple types J, K, N, S, T (each input can be configured individually) |
| Channel input resistance |
Voltage: > 100 kΩ, current: ca. 330 Ω |
| Time constant of the input filter |
Line-frequency suppression 50 Hz, 60 Hz, none |
| Indication of the input signals |
1 yellow LED per channel, the brightness depends on the value of the analog signal |
| Conversion time |
1 ms (none), 100 ms (60 Hz), 120 ms (50 Hz) per channel |
| Resolution |
Range |
unipolar |
15 bits |
| bipolar |
15 bits + sign |
| Relationship between input signal and hex code |
table Input Ranges AI531 Analog Input Module |
| Unused voltage inputs |
Are configured as “unused” |
| Unused current inputs |
Have a low resistance, can be left open-circuited |
| Overvoltage protection |
Yes |
