Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Measured variables | Voltage, current, active power, reactive power, and frequency |
| Rated voltage | 400 V between (PE)N and L AC; 690 V between line conductors AC |
| Rated current | 1 A or 5 A AC |
| Communication protocol | MODBUS TCP |
| Fast Ethernet interfaces | 2; 2 x RJ45 |
| Digital inputs | 2, screw-type terminals |
| Digital outputs | 2 bidirectional outputs, screw-type terminals |
| Auxiliary power | 100 … 250 V AC/DC |
| Display | Graphical LCD, 54 mm x 72 mm |
| Front protection | IP65 |
| Mounting | Vertical installation in stationary panels in closed rooms |
Applications
- Electrical variable measurement: Measures voltage, current, active power, reactive power, and frequency.
- Digital signal interfacing: Accepts signals through 2 digital inputs and provides switching or pulse output functions through 2 digital outputs.
- Modbus TCP communication: Communicates measured values through the MODBUS TCP protocol at the Ethernet interface.
Key Features
- Electrical measurement: Measures voltage, current, active power, reactive power, and frequency; voltage and current measurement use TRMS.
- Measurement ranges: Rated voltage is 400 V between (PE)N and L AC and 690 V between line conductors; rated current is 1 A or 5 A AC.
- Communication interface: Supports MODBUS TCP over 2 Fast Ethernet interfaces with 2 x RJ45 connections and transfer rates from 10 000 kbit/s to 100 000 kbit/s.
- Digital I/O: Has 2 digital inputs with screw-type terminals and 2 bidirectional digital outputs supporting switching or pulse output functions.
- Supply and display: The wide-range AC/DC power supply accepts 100 … 250 V; the device has a graphical LCD with 4 keys.
- Panel installation and protection: The 96 mm device mounts vertically in stationary panels in closed rooms; front protection is IP65 and enclosure protection is NEMA Type 5.
Frequently Asked Questions
1. What does the Siemens 7KM3220-0BA01-1DA0 measure?
It measures voltage, current, active power, reactive power, and frequency.
2. Which communication interface and protocol does it use?
It has 2 Fast Ethernet interfaces with 2 x RJ45 connections and supports MODBUS TCP.
3. What are the rated voltage and current values?
Rated voltage is 400 V between (PE)N and L AC and 690 V between line conductors AC. Rated current is 1 A or 5 A AC.
4. How many digital inputs and outputs are provided?
It has 2 digital inputs and 2 bidirectional digital outputs, all with screw-type terminals.
5. What mounting and protection details should be verified?
The device is for vertical installation in stationary panels in closed rooms, with IP65 front protection and NEMA Type 5 enclosure protection.
