MeloAuto-Trusted PLC & DCS Parts Supplier
Technical Specifications and Unit Design
This volting unit provides voltage monitoring and protection for ABB Procontrol systems. The ABB 3BSE007698R1 measures AC and DC voltage levels across multiple circuits. You can install this unit into any standard Procontrol rack slot position. Its high-impedance inputs minimize loading on the measured circuits. The unit weighs approximately 0.52 kilograms. Its dimensions measure 25 cm in height, 5 cm in width, and 21 cm in depth.
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | 3BSE007698R1 |
| Category | Volting Unit / Voltage Monitoring Module |
| Weight | 0.52 kg |
| Height | 25 cm |
| Width | 5 cm (single slot) |
| Depth | 21 cm |
| Number of Channels | 6 voltage input channels |
| AC Voltage Range | 0-250V AC (50/60 Hz) |
| DC Voltage Range | 0-300V DC |
| Input Impedance | 1 MΩ minimum per channel |
| Measurement Accuracy | ±0.5% of full scale |
| Resolution | 12-bit (0.06V at 250V range) |
| Response Time | 40 milliseconds typical |
| Overvoltage Protection | 400V AC/DC continuous |
| Isolation Voltage | 2500V AC between channels |
| Output Interface | 16-bit parallel bus |
| Energy Storage | None (no battery) |
| Component Count | Single PCB with voltage dividers, ADCs, and optocouplers |
Voltage Measurement and Signal Conditioning
Each channel measures AC or DC voltage independently from the others. The unit scales high voltages down to safe levels for processing. The ABB 3BSE007698R1 converts analog voltage readings to digital values for the controller. Built-in filtering removes noise from industrial power lines effectively. The unit performs true RMS conversion for AC voltage measurements. A green LED indicates proper power and communication status with the host. The unit automatically detects the signal type (AC or DC) per channel.
Monitoring and Protection Functions
The volting unit compares each voltage reading against programmable thresholds. You can set high and low alarm limits for every channel. The ABB 3BSE007698R1 generates a digital output when any channel exceeds its limit. The unit reports all voltage readings to the Procontrol CPU cyclically. It also provides rate-of-change detection for fast transient events. A yellow LED flashes when any channel triggers an alarm condition. The unit stores no historical data independently from the host controller.
Installation and Operational Guidelines
You must insert this unit into any standard Procontrol I/O rack slot. The backplane supplies 5V and 24V DC power to the unit automatically. The ABB 3BSE007698R1 draws approximately 200 mA from the 5V supply rail. You must use shielded twisted-pair cables for all voltage sensing connections. This practice prevents electrical noise from corrupting low-level measurements. The unit requires no external battery for normal monitoring operation. You should verify the input voltage never exceeds 400V AC or DC. Exceeding this limit will permanently damage the input circuits.