FONESTAR ZS-2000M Manual De Instrucciones página 15

Class-D Amplifier (ZS-1500/ ZS-2250/ ZS-4125)
This chapter describes the ZS-1500/ZS-2250/ZS-4125 characteristics, functions, appearance and
specifications.
In the system, the ZS-1500/ZS-2250/ZS-4125 are used to amplify audio signal power and drive many
broadcasting loudspeakers.
PRODUCT CHARACTERISTICS
The ZS-1500/ ZS-2250/ ZS-4125 have the following main characteristics:
- A CLASS-D power amplifier with high efficiency and energy conservation
- 1X500W, 2X250W and 4X125W
- Contains 1/2/4 independent channels
- Each channel has 100V or 70V output
- Supports balanced or unbalanced audio input
- The ZS-1500/ ZS-2250/ ZS-4125 is cooled through forced air-cooling
- Able to automatically limit output voltage
ZS-1500/ ZS-2250/ ZS-4125 Functions and Features
This section describes the main functions of the ZS-1500/ ZS-2250/ ZS-4125:
- Main and Backup Power Supplies
- Power Supply Protection
- Overheating Protection
- Overload and Short-circuit Protection
- Fault Monitoring and Output
- Self-test Function
MAIN AND BACKUP POWER SUPPLIES
The ZS-1500/ZS-2250/ZS-4125 contain main and backup power supplies. The main power supply is
generally utilized, and the backup power supplies standby in case of a main power supply fault. In case of a
main power supply fault, the POWER indicator light on the ZS-1500/ZS-2250/ZS-4125 front panel and AC
FAULT indicator light turn on. The ZS-1500/ZS-2250/ZS-4125 outputs fault signals simultaneously and
automatically switches to the backup power supply for power. After the main power supply is returned to
normal, it supplies the power again.
POWER SUPPLY PROTECTION
In the case of a short circuit or other ZS-1500/ ZS-2250/ ZS-4125 fault, the main power supply input is
disconnected automatically.
OVERHEATING PROTECTION
When the temperature within the ZS-1500/ZS-2250/ZS-4125 reaches 45 C, the fans automatically start and
operate at the fastest speed. When the temperature is lower than 40 C, the fans stop.
When the temperature within the ZS-1500/ZS-2250/ZS-4125 exceeds 75C, the ZS-1500/ZS-2250/
ZS-4125 automatically stops producing signals and sends overheating protection signals to help identify the
faulty circuit. When the temperature has returned to normal (lower than 70C), the ZS-1500/ZS-2250/
ZS-4125 again performs normally.
OVERLOAD AND SHORT-CIRCUIT PROTECTION
When the ZS-1500/ZS-2250/ZS-4125 output experiences a short-circuit or is overloaded, the ZS-1500/
ZS-2250/ZS-4125 automatically disconnects the output, and outputs overload or short-circuit protection
signals until the faults are eliminated.
FAULT MONITORING AND OUTPUT
The ZS-1500/ZS-2250/ZS-4125 can monitor the main and backup power supply for instances of
undervoltage, overheating protection states, and overload or short circuit protection states. When the
ZS-1500/ZS-2250/ZS-4125 monitors any fault, the ZS-1500/ZS-2250/ZS-4125 outputs an general fault signal
until all faults are eliminated.
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