FIEDLER > Units for control and telemetry > Control units > External input/output modules for control units > MAV421, MAV422 – Modules with 4–20 mA Output
MAV421, MAV422 – Modules with 4–20 mA Output
External input/output modules for control units

MAV421, MAV422 – Modules with 4–20 mA Output

The MAV421 and MAV422 external modules are RS485 converters operating under the FINET protocol, providing galvanically isolated active current outputs of 4–20 mA or 0–20 mA. The MAV421 module has one current output (I1), while the MAV422 module has two current outputs (I1 and I2).

  • 1 or 2 active current outputs: 4–20 mA or 0–20 mA
  • Galvanic isolation of outputs from the supply voltage and the RS485 serial bus
  • A precise 16-bit converter ensures high accuracy of the output signal
  • Option to connect an external power supply for the analog outputs
  • FINET and FINET_SO protocols, configurable address in the range of 121 to 136
  • Integrated overvoltage protection for both inputs and outputs
  • Supply voltage range: 12 to 24 V DC
  • Mechanically designed for DIN rail mounting, 2 standard modules wide
Non-binding inquiry

Description

The MAV421 and MAV422 modules are designed to expand the number of 4–20 mA analog outputs on FIEDLER units. The modules, which feature one or two current outputs, are designed for mounting on a 35 mm DIN rail. LEDs indicate the power status, the output current loop, and communication with the H3 unit.

Applications

  • Increasing the number of analog outputs in control systems
  • Transmitting measured values to a higher-level system
  • Controlling frequency converters and servo valves; smooth machine control

Technical specifications

Technical Specifications MAV421 MAV422
Outputs 1x 4(0)-20 mA 2x 4(0)-20 mA
Output error < ±0.05% of range, high-precision 16-bit converter < ±0.05% of range, high-precision 16-bit converter
Slew Rate < 0.5 s across the entire range < 0.5 s across the entire range
Load Resistance < 500 Ω < 500 Ω
RS485 Output Channels K1, K2 via RS485, FINET protocol Channels K1, K2 via RS485, FINET protocol
Communication address 120 + on-board switch (0 to 15) 120 + on-board switch (0 to 15)
Supply Voltage 12 to 16 V DC / I < 50 mA 12 to 16 V DC / I < 80 mA
Temperature range -25 °C to +60 °C -25 °C to +60 °C
Dimensions/IP 109 x 25 x 57 mm / IP 20 (2-module width, DIN rail) 109 x 25 x 57 mm / IP 20 (2-module width, DIN rail)

Downloads

Price List Datasheet Rizeni Cov Cenik 2026 V101

Related products

AIM600, AIM615 - 4-20 mA/RS485 Converters

AIM600, AIM615 - 4-20 mA/RS485 Converters

The AIM600 and AIM615 transducers are characterized primarily by high measurement accuracy provided by the 24-bit converter, as well as low quiescent current consumption, a supply voltage suitable for operation from a 12 V battery, galvanic isolation of the inputs from both the supply voltage and the RS485 communication line, and, last but not least, high operational reliability without any mechanical adjustment elements.

View
OPTO3 - Pulse Signal Splitter

OPTO3 - Pulse Signal Splitter

The OPTO3 galvanically isolated pulse splitter has one pulse input for connecting a signal from a water meter or electric meter sensor and three mutually galvanically isolated pulse outputs.

View
H520-B - Level Display Module

H520-B - Level Display Module

The H520-B display module is designed to provide an approximate indication of the liquid level. The module does not contain a liquid level sensor; it merely displays the liquid level data received from a connected control system via the RS485 bus.

View
GX200 - Current Loop Galvanic Isolation Module

GX200 - Current Loop Galvanic Isolation Module

A galvanic isolation module for 0–20 mA and 4–20 mA current signals that does not require an external power supply, designed for two-wire transducers.

View

Non-binding inquiry

MAV421, MAV422 – Modules with 4–20 mA Output



    Contact

    Have a project or a question?

    Free consultation - our specialists will help you choose the right solution for your project.