---
lang: "en"
title: "4-channel voltage - current / RS485 input module"
sku: "Z-4AI"
canonical_url: "https://shop.marcomweb.it/en/remote-io/4-channel-voltage-current-rs485-input-module"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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Z-4AI: 4-channel voltage - current / RS485 MODBUS input module

Z-4Ai is a module for acquiring 4 voltage or current inputs in the ranges of ± 2 Vdc, ± 10 Vdc and ± 20 mA with 16-bit resolution.

The module's auxiliary power supply can power all 4 current loops simultaneously.

Via DIP-Switch, it is possible to set the address, Baud Rate and sampling time for all channels to 240 ms or 480 ms. Z-4AI guarantees input isolation of 1500 Vac compared to the remaining low voltage circuits.

The module supports RS485 serial communication with Modbus-Rtu protocol, maximum 64 nodes.

## Features

- POWER SUPPLY: 10..40 Vdc; 19..28 Vac (50-60 Hz)
- TRANSDUCER POWER SUPPLY: 20 Vdc, 20 mA
- DIMENSIONS: 17.5 x 100 x 112 [mm]
- MOUNTING: For 35 mm DIN 46277 rail
- INPUTS: 4 voltage channels (up to ±10 Vdc) or direct current (up to ±20 mA)
- RESOLUTION: 14 bit + sign
- COMMUNICATION: 2-wire RS485, ModBUS RTU slave protocol

---

Source: https://shop.marcomweb.it/en/remote-io/4-channel-voltage-current-rs485-input-module

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.