VTU
Voltage Tracking Unit
Device Description
VTU (Voltage Tracking Unit) is a generation digital input module that provides voltage tracking in single phase or three phase systems. Digital input module has network analyzer specification that provides 4 channel voltage and 3 channel current input on device. In addition to network analyzer and voltage tracking, VTU provides to monitoring of energy parameters of single phase or three phase information that connects.
Logical 1 and 0 informations can be set with VTU Configuration Software which voltage range will work. At the same time, power parameter may also be observed which is calculated as real time.
| Device Specifications | |
| Supply Voltage Range | 9-18 VDC / 18-36 VDC |
| Nominal Supply Voltage | 12 VDC / 24 VDC |
| CPU | ARM Cortex-M4 32 Bit |
| Flash | 256 kB |
| RAM | 32 kB |
| Watchdog Timer | System Reset / 5 sec |
| Power Consumption | 1.5W @ 24 V DC |
| Real Time Clock | Available |
| Configuration | Inavitas VTU Configuration Software |
| Communication Specifications | |
| Communication Protocols | Modbus-RTU (Slave) g/n |
| Serial Interfaces | RS-485 (Isolated), Micro USB Type 2.0 |
| Serial Communication Speed | 1200bps – 115200bps |
| Connection Type | 3-Wired (A, B, GND), Semi Duplex |
| Data Type | 8 Bit Data, No Parity, 1 Bit Stop |
| Insulation | 2.5 kVAC RMS 1 Minute |
| Usb Data Transfer Speed | 480 Mbit/s |
| Digital Input Specifications | |
| Voltage Measurement Range | 0 – 275 VAC,RMS |
| Number of Digital Channels | 18 Voltage Inputs |
| Logical “1” Value | Programmable, Default : ≥ 150VAC,RMS ≤ 275 VAC,RMS |
| Logical “0” Value | Programmable, Default : ≤ 150VAC,RMS |
| Input Current | 1.5 mA / Channel |
| Input Filter | Programmable, Default : 100ms |
| Input Change Counter | 32 Bit |
| Power Measurement Specifications | |
| Voltage Measurement Range | 0 – 275 VAC,RMS (L – N), 0 – 500 VAC,RMS (L – L) |
| Current Measurement Range | 1 – 4000 AAC,RMS (Split Type) |
| Frequency | 50 / 60 Hz ±5% |
| Voltage Channels | 3P + N (3 Phase Voltage and Neutral) |
| Current Channels | 3 Current Inputs |
| Sampling Frequency | 128 Sample / Cycle |
| Voltage Accuracy | ±0,5% |
| Current Accuracy | ±1% |
| Active Energy Accuracy | IEC 62053-22 Class 0.5S |
| Accuracy Class | IEC 61000-4-30 Class S |