Altoc Vtm 10 May 2026

| Feature | Altoc VTM 10 | Phoenix MINI MCR | Weidmüller ACT20X | | --- | --- | --- | --- | | Universal input (TC, RTD, V, mA) | Yes (all in one) | No (requires separate modules) | Yes | | NFC configuration | Yes (unique) | No | No | | Width (mm) | 22.5 | 22.5 | 22.5 | | Price (approx. USD) | $189 | $215 | $245 | | Modbus RTU onboard | Yes (standard) | Optional ($$) | Optional ($$$) | | Response time | <50 ms | <30 ms | <25 ms | | Warranty | 5 years | 3 years | 3 years |

: "Altoc VTM 10 mounted on DIN rail with labeled terminals for power, input, and output." altoc vtm 10

For RTDs: Ensure you enable the appropriate wire configuration in the software. Default is 3-wire. | Feature | Altoc VTM 10 | Phoenix

A: Yes. The analog output is independent. However, if you change the input range via Modbus, the analog output updates immediately. A: Yes

| Symptom | Likely Cause | Solution | | --- | --- | --- | | Green LED off | No power / reversed polarity | Check 24 VDC supply; swap terminals 1 and 2. | | Red LED flashing at 1 Hz | Sensor break or short | Check continuity of thermocouple/RTD. Is cable cut? | | Output stuck at 3.8 mA | Under-range condition | Input signal is below 0% of span. Check sensor zero. | | Output stuck at 20.5 mA | Over-range or burnout set | Input exceeds 105% of span, or sensor is broken with "high" burnout selected. | | Fluctuating output (noise) | VFD interference or filter off | Increase digital filter value; check shielding on input wires. Use twisted pair. | | No Modbus communication | Wrong baud rate / address | Verify settings match master. Ensure termination resistor (120Ω) is present on long runs (>100 m). |

| Sensor Type | Terminal A (IN+) | Terminal B (IN-) | | --- | --- | --- | | 0-10 V voltage | Signal + | Common / GND | | 4-20 mA current | Signal + (via 250Ω internal shunt) | Common | | Thermocouple Type K | TC+ (positive lead) | TC- (negative lead) | | Pt100 (3-wire) | White (sense+) | Red (excitation) and White (return) |