Ampcontrol VAA, User Manual

Page: 6 / 81

VOICECOM USER MANUAL ISSUE 4
-4-
CHAPTER 1 – Overview of the VoiceCom System
The Ampcontrol designed VoiceCom system is a multi-station audio communication system suitable for long wall and
conveyor message applications. The system’s three principal functions include generating pre-start alarms, playing
pre-recorded voice messages and one to many station communications. The system is comprised of two main
components, the VCA VoiceCom Controller and VAA VoiceCom Amplifier field units.
System highlights

2 Intrinsically Safe communication lines

Connection of up to 31 VAA field units per line

User selectable pre-start alarm tones for each line

Pre-start confirmation from all VAA units

User recordable voice messages – up to 255 messages can be stored

PC software to create voice message banks

High quality audio output

Advanced diagnostic and preventative maintenance features

“Call Exchange” functionality
VCA features

One compact unit controls pre-start alarms and voice messages

4 line backlit LCD display

Tactile seven button integrated keypad (optional external keypad available)

Easy to use menu system allowing access to system status and configuration pages

16MB flash memory for up to 25 minutes of voice message storage

Monitor and configure VAA field units from VCA

RS-232 interface for downloading voice messages from a PC

RS-485 Modbus interface, allows control of voice messages and reading to system status by a PLC

110VAC operation

Telephone exchange interface

External I.S. keypad interface
VAA features

Intrinsically Safe

IP66 ingress protection rating when enclosed in an Ampcontrol stainless steel housing

Powered using a sealed lead acid battery for high capacity and longer life

LCD display showing operational status values such as line voltage, battery voltage and battery current

Durable 4 button membrane keypad

Dust and moisture protected microphone

Connection for two external speakers

Address, volume, microphone gain and charging current configurable at the VAA as well as at the VCA

Compatible with most existing voice communication systems
Applications

Long wall operations

Conveyors

Hazardous area communication