YOU MUST READ THIS BEFORE INSTALLATION

ELECTRICAL SAFETY

INSTALLATION REQUIREMENTS

USER RESTRICTIONS

USAGE ENVIRONMENT

HOT SURFACE WARNING

WARNING: RISK OF ELECTRIC SHOCK

Always consult the Installation & Maintenance Instructions

before connecting this product to the power supply.

WARNING: Disconnect Power Before Servicing

Ensure the electrical supply is safely disconnected before

connecting to any supply, load, or control terminals.

WARNING: Installation by Qualified

Personnel Only

This product must only be installed or fitted by

a competent, qualified installer familiar with

the relevant electrical standards and

installation practices.

WARNING: Not for Use by Vulnerable Individuals

This product is not intended for use by persons

(including children) with reduced physical, sensory or

mental capabilities, or lack of experience and

knowledge, unless they are supervised or instructed

by a person responsible for their safety.

WARNING: Industrial Use Only

This is an industrial-grade product

and is not intended for household

use.

WARNING: Hot Surfaces

On certain models, surfaces marked

with this symbol become hot during

use. Avoid direct contact and follow all

thermal safety precautions.

More Info: https://united-automation.com/general-product-safety-regulation-gpsr/

14 July 2025 | Issue: 5 Page

1 of 4

Components and Spares | Automation Control System

9 Channel HMI

X20105

D/A Signal Controller System Installation & User Manual

0044 (0) 1704-516 501

enquiries@united-automation.com

www.united-automation.com

CONTACT US:

KEY FEATURES:

The

UAL 9 Channel HMI (Human-Machine Interface) System is a microprocessor-based solution

designed to deliver up to

nine independent 0–5 VDC control signal outputs. The system consists

of one HMI master unit and up to three Digital-to-Analogue (D/A) slave modules, each capable of

providing three separate 0–5 VDC outputs. These outputs are commonly used as control signals for

power controllers and automation systems.

Power is supplied via a single D/A unit, which offers two input options:

110–240V AC, 50/60Hz or

24V DC. Only one power input should be used at a time. For detailed input specifications, refer to

the Technical Specification section.

The system communicates using a

RS485 interface over one twisted pair, while the second twisted

pair supplies 24V DC power from the powered D/A unit to the rest of the system components.

The HMI interface enables users to select and set the voltage of any of the nine output channels in

50mV increments, delivering a control range of 0–5V. Output levels are displayed on the interface

as values from

0–99 and “F”, where “F” signifies full output (5V DC).

All HMI functions can also be accessed via an

optional infrared remote control handset,

providing flexible and remote operation.

The HMI is enclosed in an

IP65-rated casing suitable for wall or panel mounting using four secure

fixings. Each D/A module is housed in a

DIN-rail mountable enclosure with a spring-loaded clip for

quick and secure installation.

 Provides 9 x 0–5V DC control outputs

 Modular design with up to 3 D/A slave

modules

 RS485 communication over two twisted

pairs

 HMI allows output voltage control in

100 steps (50mV increments)

 Optional infra-red remote control

 IP65-rated HMI enclosure for robust

protection

 DIN rail-mounted D/A modules for easy

installation

 Dual power input: 110–240V AC or 24V

DC

SYSTEM SPECIFICATIONS

Mains Supply Voltage

110VAC - 240VAC +/- 10% 50/60Hz

DC Supply Voltage

24VDC +/- 10%

Number of Channels per D-A module

9 total, 3 per D/A unit

Power Consumption

50mA max per unit (HMI and D/A)

D-A, IP Rating

IP00

HMI, IP Rating

IP65

Gland Diameter (HMI)

Max Cable Entry 2.5mm²

Operating Temperature Range

-20°C to 40°C

HMI Unit Dimensions

W=118mm D=110mm H=50mm

D to A Unit Dimensions

W=72mm D=96mm H=65mm

Remote Handset Dimensions

W=45mm D=22mm H=160mm

HMI Cable

4 core data cable, 2 x twisted pair,

26AWG minimum gauge.

Remote Handset Batteries

2 X AAA (1.5V)

APPLICATIONS:



Suitable for any industrial or automation

system requiring multiple analogue

outputs



Ideal for power controller signal input,

HVAC control systems, or distributed

analogue signal control across multiple

loads