Redback A 4567C Operating Manual
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Redback A 4567C Operating Manual

10 zone line monitor
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Redback
A 4567C 10 Zone Line Monitor
®
C
Operating Manual
A 4567C 10 Zone Line Monitoring Unit
Optional Accessories
A 4568 FIB Interface
A 4576 Alert Remote Plate
S 4444 24V Relay Board
S 4455 DIN Rail Relay Box
Redback® Proudly Made In Australia
IMPORTANT NOTE:
Please read these instructions carefully from front to back prior to installation.
They include important setup instructions.
Failure to follow these instructions may prevent the amplifier from working as designed.
User manual revision number: 1.0 31/05/2023
www.redbackaudio.com.au
Redback® Proudly Made In Australia
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Summary of Contents for Redback A 4567C

  • Page 1 Redback A 4567C 10 Zone Line Monitor ® Operating Manual A 4567C 10 Zone Line Monitoring Unit Optional Accessories A 4568 FIB Interface A 4576 Alert Remote Plate S 4444 24V Relay Board S 4455 DIN Rail Relay Box Redback® Proudly Made In Australia IMPORTANT NOTE: Please read these instructions carefully from front to back prior to installation.
  • Page 2 - no recorded messages, call centres or automated push button options. It’s not only the assembly team at Redback who are employed as a direct result of your purchase, but hundreds more at local companies used in the supply chain.

  • Page 3: What's In The Box

    Many large commercial installations have speaker circuits in excess of 250W. Traditional line monitoring units were limited to 50W per zone and would not handle this load. The A 4567C can handle loads up to 500W per zone. The microprocessor controlled circuit continuously monitors loudspeaker lines for normal, open or short circuit condition.

  • Page 4: Rear Panel Connections

    Redback A 4567C 10 Zone Line Monitor ® 1.5 REAR PANEL CONNECTIONS Figure 2 shows the layout of the A 4567C rear panel. ZONE 10 ZONE 9 ZONE 8 ZONE 7 ZONE 6 ZONE 5 ZONE 4 ZONE 3 ZONE 2...
  • Page 5 2.1 Installing the A 4567C Line Monitoring Unit (LMU) The A 4567C is a Line Monitoring unit or LMU. A LMU monitors the condition of 100V PA speaker lines and alerts the user when there is a problem with the speaker line wiring.
  • Page 6 Redback A 4567C 10 Zone Line Monitor ® 2.2 Configuring the speaker lines for monitoring. As mentioned in section 2.1 all the speaker lines must be of the 100V type, with all speakers fitted with a 22uF Bipolar capacitor and all lines terminated with an 100KΩ resistor of at least 0.25W rating. Figures 4a - 4d illustrate the requirements for the speaker lines.
  • Page 7 Any new fault conditions will result in the alarm tone sounding again and the “Cancel” switch LED to illuminate. From then on, no matter how many times the cancel button is pushed the A 4567C will go into alarm mode any time there is a new fault condition on any of the zones.

  • Page 8: Symptoms And Remedies

    Redback A 4567C 10 Zone Line Monitor ® 3.1 SYMPTOMS AND REMEDIES SYMPTOMS REMEDIES No power to unit. Check fuse and replace with M205 type 1A fuse if required. The “SHORT” LED comes up on a zone. Check that the 100KΩ EOL resistor is...

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