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Parts Identifications ( con’t )

T

12.  ADDRESS SWITCH

11.  FAULT CONTACT AND DATA TEMINALS

10. DIP SWITCHES FOR UNUSED CHANNELS

8.  POWER INPUT TERMINAL

9.  AMPLIFIER INPUT AND OUTPUT TERMINALS

7.  CASCADE LINK

Port to link more than one AX3800 to enable 1 standby to cater for up to 16 nos of amplifiers. Refer to 

section “ Cascading AX3800 ” for details. 

AX3800 operates on 24V DC. Use PS9400 power supply unit or regulated power adaptor with 1 A rating.

Outputs from amplifiers are terminated to the IN connectors and the OUT connectors going to zone selectors. 

Sensing of amplifier faults shall be at input terminals. For the channels not connected, it should be switched off 

at the DIP switch as per item 10. 

Channel 1 shall have higher priority for standby takeover than subsequent channels. This is to ensure that ampli-

fier serving highest priority shall be connected to channel with lower number. 

When there are channels not connected, push to ON at this DIP switch to bypass the detection activity.

A fault detected at any channel would trigger a relay to provide a dry contact. This contact can be used to link to 

external alarm, indication light, etc.

Corresponding RS485 data shall be sent out and can be monitored remotely, such as at PMX Lan through 

iPX5500 Comm Box. Refer to section “ Remote Monitoring via PMX LAN ”

For remote monitoring, it is required to address each AX3800 when there are more than one installed. Units 

are addressed using BCD code, as shown below :

 

Unit no.1  1000 0000

 

Unit no.2  0100 0000

 

Unit no.3  1100 0000

 

Unit no.4  0010 0000

AX3800 Auto Amplifier Fault Changeover

Summary of Contents for AX3800

Page 1: ...without human intervention to comply with various Codes of Practices such as BS EN or SS By means of pilot tone injection at intervals it ensures power amplifiers are not loaded all the time to preven...

Page 2: ...tus of connected amplifier with AMP NORMAL FAULT LEDs Green normal operating Red amplifier faulty Off monitoring bypassed AMP CHANGEOVER LEDs Green faulty and standby amplifier overtake the position o...

Page 3: ...r item 10 Channel 1 shall have higher priority for standby takeover than subsequent channels This is to ensure that ampli fier serving highest priority shall be connected to channel with lower number...

Page 4: ...2 1 3 5 4 6 ALL CALL PAGING ZONE SELECTION OVERRIDE OVERRIDE AX 3800 amperes AMP NORMAL FAULT AMP CHANGEOVER ON OFF AMP FAULT ALERT PILOT TONE AMP1 AMP2 AMP3 AMP4 AMP5 AMP6 AMP7 AMP8 AMPSTDBY STANDBY...

Page 5: ...dB POWER PROTECT CLIP 480 Watts amperes PA 2480 SPEAKER VOLUME OVERIDE OFF 1 2 3 4 5 SPEAKER VOLUME OVERIDE OFF 1 2 3 4 5 ampe res ampe res O I POWER PUBLIC ADDRESS POWER AMPLIFIER SIGNAL 40 dB SIGNAL...

Page 6: ...ntroller to the inputs of power amplifiers Audio source 1 shall feed to amplifier 1 Link switch 1 shall be switched to OPEN position Audio source 2 shall feed to amplifier 2 5 Link switch 2 3 and 4 sh...

Page 7: ...K OPEN BALANCE AUDIO SIGNAL From Amp Output 1 To Zone Selector From standby amplifier output Channel bypass DIP Switches When connecting amplifier outputs to 100V section at the terminals ensure the p...

Page 8: ...amplifier to serve more than 8 duty units AX3800 will need to be stacked up or cascaded The link between them has been made simpler using RJ45 connectors Unit 1 Unit 2 Unit 3 Cat5e Cat5e To standby a...

Page 9: ...etwork via Amperes iPX5500 Communication Box Application with iPX5500 can be from single or multiple locations When there are several AX3800 connected it is important to set the address correctly with...

Page 10: ...red channel To protect standby amplifier only 1 failed duty amplifier is allowed for changeover at any one time Switch OFF the power amplifier at Ch 8 When PT lits AMP 8 LED will turn red and Changeov...

Page 11: ...asier Channel isolation switch for unused or un monitored channel Individual channel status indicators normal fault and changeover status Technical Specifications Operating voltage Power consumption I...

Page 12: ...med by unauthorized personnel or service centres This warranty covers only repairs and replacement of defective parts cost and risks of transportation as well as removal and installation of the produc...

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