8 Channel amplifier with fault changeover speaker line surveillance
Features:
1. 8 Channel amplifier fault changeover with speaker line surveillance
2.19" rack mount design in 1U height
3.One standby amplifier to backup 8 amplifier within 1 second
4. 8 speaker line supervision for open circuit, short circuit and impedance fluctuation
5. Each speaker zone detection time within 2 seconds
6. The amplifier and speaker line fault will be reminded by indicator, buzzer, fault out and RS485 out
7. 8 amplifier indicator, standby amplifier indicator and 8 speaker line indicator
8.With calibrate button on front panel to initialize or calibrate each amplifier and speaker line setting
9. With 8 balanced line inputs and 8 balanced line outputs with 24V overriding relay
10. With 8 amplifier 100V inputs and 8 zone 100V outputs
11. Dipswitch for 8 zone enable or disable the monitoring
12. Auto or manual two different monitoring options
13. 10% and 20% two speaker impedance monitoring options
14. Expandable from 8 zones to max 192 zones
15. Two RS485 interface to third party system
16. 24V DC operation system
Description:
The 8 channel amplifier fault auto-changeover with speaker line impedance surveillance is an integrated controller integrates the amplifier fault changeover with the speaker line surveillance into one 19" 1U unit. The amplifier fault auto changeover will automatically switch into standby amplifier once there is anyone of the 8 amplifiers in case of fault. The switching time is within 1 second. The speaker line impedance supervision enables to supervise the speaker line open circuit, short circuit and impedance fluctuation. Each zone detection time is within 2 seconds, The amplifier fault and speaker line fault will be reminded by front panel visualized indicator, buzzer and two RS485 interface to third party system.
The amplifier fault changeover and speaker line surveillance unit is design with full visual indication. There are 8 amplifier working status indicators, green of normal, yellow of standby and red of fault and distinguished of non-used. There are 8 speaker line monitoring status indicators, green of normal, yellow of standby and red of fault and distinguished of non-used.
There are 8 line inputs 8 line outputs with 24V overriding relay, 8 amplifier inputs of 100V and 8 zone 100V outputs. Two RS485 outputs to inter-work with third party system. Dipswitch for 8 zone enable or disable the monitoring. Auto & manual two operation modes. One calibrate button on front panel to initialize or calibrate each amplifier and speaker line setting. Speaker line impedance surveillance have 10% and 20% fluctuation two options. Expandable from 8 zones to max 192 zones. 24V DC operation system.
Specification: | Model | EN-800AC |
| Description | 8 Channel Amplifier Fault Changeover with Speaker Line Surveillance |
| Channel | 8 Channels |
| Connector | Eight balanced line inputs by phoenix connector
Eight balanced line outputs with 24V relay by phoenix connector Eight Amplifier 100V inputs by phoenix connector
Eight Speaker 100V outputs by phoenix connector
Two RS485 interfaces by phoenix connector |
| Configuration | Auto or manual monitoring dipswitch; Enable or disabled 8 zone monitoring dipswitch
Expandable to 192 zones ID dipswitch; 10% or 20% monitoring speaker line fluctuation |
| Input Sensitivity/Impedance | 1V, 10K Ohm |
| Pilot Tone Frequency | 20 KHz (±5%) |
| Detection Line | 50V/70V/100V Speaker line |
| Detection Level | 50V rms min |
| Amplifier Detection Time | < 1 Second |
| Speaker Line Detection Time | < 2 Seconds per speaker zone |
| Changeover Time | < 1 Second |
| Failure Detection Time | 5-15 Seconds |
| Failure Reset Time | 20 Seconds Max. |
| Zone Loading Capacity | 500W /100V Line Max. |
| Max Loading Current | 8A |
| Measurement Sensitivity | ±10% of Speaker line impedance |
| Power Supply | DC24V by phoenix connector Max. 2A |
| Dimension | 482(W)x420(D)x44(H) mm |
| Weight | 3.2kg |
About us:
Guangzhou FTD Audio Limited is a leading manufacturer of Public Address System and Conference System in China, We are focus on R&D and our Professional R&D team already 15 years′ experience on Audio field. FTD audio will offer the professional products and
service to each of partner and do a win win business with our partners!
Our main products are Public address system ,EVAC system, IP PA system ,conference system ,PA amplifier and PA speaker.These
system are all designed and produced by our engineer. We are accept OEM,ODM order.
Exhibition:
Certifications:
Deliver time:
15-20 Days after getting bank slip.
Warranty:
One year warranty after sales. if any problem happened under warranty , you can return to us and fix it.
Why choose us:
1. More than 15 years Public address system experience , with top R&D team can accept OEM and ODM order for our customers.
2. Stable quality with good quality control, quality is our life.
3. 7*24 hours quick response for technology support.
4. Various PA system product for one shop purchase.
6. System solution designed can be offered base on requirement.
7. Reasonable price for a win win business .
FAQ:
1. Are you manufacturer?
Yes, we are public address system manufacturer located in Guangzhou, China.
Welcome to visit our factory.
2. Is sample order available? Is free sample available?
Firstly, sample order is available. Secondly, for new clients, we will return the sample fee after big order placed.
3. What's your warranty period?
Our warranty period is 12 months for speaker.
4. What's your payment terms?
We accept Western Union and TT. 30% deposit in advance, balance 70% before shipment.
5. Where is your main market?
Customers are mainly from Europe, Middle East and South Asia.
6. How many days do you need to prepare for the goods?
It takes 30 working days for large order.
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