MU-415, MU-416, MU-815, MU-816
The MU-415 and MU-416 modules offer four analogue input channels configurable for voltage measurement (S.E. or differential input topology) or resistance measurement in two-wire, three-wire and four-wire topology.
The MU-815 and MU-816 modules offer eight analogue input channels configurable for voltage measurement (S.E. topology) or resistance measurement in two-wire topology.
For direct measurement with different temperature sensors, the firmware implements algorithms for linearization of most of the resistive thermometers (RTDīs) and thermocouples including compensation of the "cold end" of the thermocouple (modules are equipped with a temperature sensor located in the immediate proximity of the analog input terminals).
All types mentioned above allow to choose an appropriate input range (including thermocouple and RTD linearization) independently for each input channel.
The modules are based on 24-bit A/D converter, high precision and long-term stability is achieved by the autocalibration running continuously on the background of cyclic measurements. The time needed to measure all channels, including autocalibration and open senzor detection, takes less than 1.2 seconds. Alternatively, floating filters averaging the results of the ten most recent measured values can be activated.
The module also includes two digital inputs with counter capability and two digital outputs (MU-415/815) or four digital outputs (MU-416/816).
The whole analogue input group is isolated from other circuits of module (DIO ports, power supply and RS-485 interface), but inputs are not isolated from each other. The digital inputs and outputs are isolated from other circuits and from each other (except DOUT channels for MU-416/816 types).
Specifications
| Type | MU-415, MU-416 | MU-815, MU-816 |
|---|---|---|
| Analog inputs | 4x U/TC/R/RTD | 8x U/TC/R/RTD |
| Analog input topology (voltage ranges) |
4x DIFF. + 4x S.E. | 8x S.E. |
| Analog input topology (resistance ranges) |
four-wires three-wires two-wires (software compensation of wire resistance) |
two-wires (software compensation of wire resistance) |
| Voltage ranges | ±1.2V ±0.6V ±0.3V ±150mV ±70mV ±35mV |
|
| Resistance ranges | 4kΩ 2kΩ 1kΩ 500Ω 250Ω 120Ω |
|
| Excitation current (resistance ranges) |
0.25mA approx. | |
| Internal temperature sensor |
-40÷70°C | |
| ADC resolution | 24-bit (continuous offset and range autocalibration) |
|
| Basic accuracy | better than 0.1% of FSR (U/R ranges) better than 1°C of FSR (temperature sensors) |
|
| TC linearization | B type (-250÷1820°C) E type (-200÷1000°C) J type (-210÷1200°C) K type (-200÷1372°C) N type (-200÷1300°C) R type (-50÷1768°C) S type (-50÷1768°C) T type (-200÷400°C) |
|
| RTD linearization | Pt100/3850 (-200÷850°C) Pt100/3911 (-200÷850°C) Pt500/3850 (-200÷850°C) Pt500/3911 (-200÷850°C) Pt1000/3850 (-200÷850°C) Pt1000/3911 (-200÷850°C) Ni100/5000 (-60÷250°C) Ni100/6180 (-60÷250°C) Ni1000/5000 (-60÷250°C) Ni1000/6180 (-60÷250°C) KTY10-5 (-50÷120°C) KTY10-6 (-50÷120°C) KTY10-62 (-50÷120°C) KTY10-7 (-50÷120°C) |
|
| Measurement period | less than 1.2s (the time needed to measure all channels) |
|
| Overvoltage protection | ±15V continuously (±20V max. 1s) | |
| Analog input isolation | 1kVDC (AIN block against other circuits) | |
| Number of digital inputs | 2 | |
| Type of digital inputs | isolated, bipolar 24V with 50Hz filter |
|
| Digital input signal (level L) |
<3VDC (both polarities) <3VRMS (signal 50Hz) |
|
| Digital input signal (level H) |
10÷35VDC (both polarities) 15÷35VRMS (signal 50Hz) |
|
| Overvoltage protection | ±60VDC (max. 1s) 60VRMS (signal 50Hz, max. 1s) |
|
| Digital input impedance | 14kΩ approx. | |
| Digital input isolation | 1kVDC (DIN block against other circuits) 100VDC (between DIN channels) |
|
| Number of counters | 2 | |
| Counter frequency | 10Hz max. (signal asymmetry 40/60% max.) |
|
| Counter range | 0÷4294967295 (i.e. 32-bit counter) | |
| Number of digital outputs | 2 (MU-415, MU-815) 4 (MU-416, MU-816) |
|
| Type of digital outputs | isolated, 24V (MU-415, MU-815) group isolated, 24V (MU-416, MU-816) |
|
| Digital output signal | 32VDC/0.3A max. | |
| Digital output isolation | 1kVDC (DOUT block against other circuits) 100VDC (between DOUT channels; only MU-415/815) |
|
| Supply voltage | 10÷30VDC | |
| Power consumption | 2.2W max. | |
| Housing & Dimensions | Modulbox 6M | |
| Signal terminals | screw terminals, wire 2.5mm2 max. | |
