Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Measurement functions | Voltage, current, active power, reactive power, and frequency |
| Measurement method | TRMS for voltage and current; complete measured-value detection |
| Voltage measurement range | 11.5 V to 280 V AC between (PE)N and L; 400 V AC maximum rated line-to-line voltage |
| Current inputs | 1 A and 5 A AC rated values; 10 % to 120 % range |
| Communication | Modbus RTU; 1 Fast Ethernet interface; 4 800 kbit/s to 115 200 kbit/s |
| Digital I/O | 1 digital input and 1 digital output |
| Supply | 100 … 250 V AC/DC |
| Display | White LCD, 56 mm x 74 mm, adjustable backlight and contrast |
| Connections | Screw-type terminals for voltage, current, digital input, and digital output |
| Mounting | Vertical mounting; DIN-rail mounting: No |
| Protection | IP40 on the front; protection class II when installed |
Applications
- Stationary panel installation: Suitable for installation in stationary panels in closed rooms.
Key Features
- Electrical measurement: Measures voltage, current, active power, reactive power, and frequency; voltage and current measurement use TRMS.
- Panel format and display: Basic 96 x 96 mm power monitoring device with a 56 mm x 74 mm white LCD, adjustable backlight and contrast, and 4 keys.
- Modbus RTU communication: Communication protocol: Modbus RTU; 1 Fast Ethernet interface is supplied, with transfer rates from 4 800 kbit/s to 115 200 kbit/s.
- Measurement inputs: Voltage inputs use screw-type terminals and support 11.5 V to 280 V AC between (PE)N and L, with 400 V AC maximum rated line-to-line voltage.
- Digital I/O: Has 1 passive electronic digital input and 1 passive electronic digital output, both with screw-type terminals; the output supports switching or pulse output functions.
- Supply and protection: Wide-range AC/DC supply: 100 … 250 V; front protection class IP40 and operating resource protection class II when installed.
Frequently Asked Questions
1. What does the Siemens 7KM1020-0BA01-1DA0 measure?
It measures voltage, current, active power, reactive power, and frequency. Voltage and current measurement use TRMS.
2. What voltage and current ranges are supported?
Voltage between (PE)N and L is 11.5 V to 280 V AC, with 230 V maximum rated value; maximum rated line-to-line voltage is 400 V AC. Current rated values are 1 A and 5 A AC, with a 10 % to 120 % range.
3. Which communication interface and protocol are provided?
The device provides Modbus RTU and 1 Fast Ethernet interface, with transfer rates from 4 800 kbit/s to 115 200 kbit/s.
4. How is the device connected and mounted?
Voltage, current, digital input, and digital output use screw-type terminals. Mounting is vertical; DIN-rail mounting is not supported.
