Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Measurement functions | Voltage, current, active power, reactive power, and frequency measurement |
| Voltage measurement | 11.5 V to 480 V AC between (PE)N and L; 690 V AC maximum rated value between line conductors |
| Current inputs | 1 A or 5 A AC rated value |
| Digital inputs | 2, with screw-type terminals |
| Digital outputs | 2 bidirectional outputs with switching or pulse output function |
| Communication protocol | Modbus RTU |
| Transfer rate | 4.8 kbit/s to 115.2 kbit/s |
| Auxiliary power | 100 … 250 V AC/DC |
| Display | LCD, 54 mm x 72 mm, 4 keys |
| Front protection | IP65 |
| Mounting | Vertical; DIN-rail mounting: No |
Applications
- Electrical variable measurement: Measures voltage, current, active power, reactive power, and frequency.
- Digital signal switching or pulse output: Provides 2 bidirectional digital outputs with switching or pulse output function.
Key Features
- Electrical measurement: Measures voltage, current, active power, reactive power, and frequency; voltage and current measurement use TRMS.
- Display and control panel format: LCD with a 54 mm x 72 mm display, 4 keys, adjustable contrast, and white background; device size is 96 x 96 mm.
- Communication: Modbus RTU protocol with a transfer rate of 4.8 kbit/s to 115.2 kbit/s.
- Digital inputs and outputs: 2 digital inputs with screw-type terminals and 2 bidirectional digital outputs with switching or pulse output function.
- Supply and protection: Auxiliary power is 100 … 250 V AC/DC; the front protection class is IP65.
- Installation: Vertical mounting with screw terminals for voltage and current measurement inputs; DIN-rail mounting is not supported.
Frequently Asked Questions
1. What does the Siemens 7KM3120-0BA01-1DA0 measure?
It measures voltage, current, active power, reactive power, and frequency.
2. How many digital inputs and outputs does the PAC3120 have?
It has 2 digital inputs and 2 bidirectional digital outputs. The inputs and outputs use screw-type terminals.
3. Which communication protocol and transfer rate are supported?
It supports Modbus RTU with a transfer rate from 4.8 kbit/s to 115.2 kbit/s.
4. What auxiliary power does this device require?
Auxiliary power is 100 … 250 V AC/DC.
5. How is the device mounted?
It is mounted vertically using screw terminals for the voltage and current measurement inputs. DIN-rail mounting is not supported.
