User manual ELECTRO-VOICE DPP 4012
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Manual abstract: user guide ELECTRO-VOICE DPP 4012
Detailed instructions for use are in the User's Guide.
[. . . ] Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains 3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times. [. . . ] It also serves to use the appliance as plain power supply without battery supply and without remote control. The output SWITCHED OUT (16) is meant for the connection of the DPM 4000 or other external devices that need non-interrupted emergency power supply. With the DPP 4004 this connector's maximum power handling capacity is 4 A; the DPP 4012 provides 12 A. The output offers internal short-circuit protection and it can be operated without load. Usually, this output is connected to the internal switch-mode power supply, so that the connected load is supplied with the needed voltage. In case of temporarily insufficient mains supply, power failure, malfunctioning of the switch-mode power supply or thermal overload of the DPP 40xx, the SWITCHED OUT (16) is switched to battery supply (when present) within fractions of a second, providing gapless power supply to the connected devices. When the mains is present again or after solving the problem that caused the malfunction, the appliance automatically returns with a delay of 600 ms to mains operation. If there is no battery present during the occurrence of a mains complication, the DPP 40xx behave as if the front mains switch has been switched off; except for the fact that the MAINS LED is still lit. The output MODULES OUT (14) is meant for the connection of devices (relay-fields, alarm-devices, voice reproduction, etc. ) that can be switched off during a power outage during which time the PA-system should operate in the stand-by mode. Switching off unnecessary devices during the occurrence of a power failure is preferable, otherwise the battery is unnecessarily strained. The output employs a "softstart" function that controls the initial current inrush, preventing the main supply from interference by possible
capacitive loads connected. This output is controlled by the inputs ON/OFF (TOGGLE) (pin 1 of the remote control connector) or ON/OFF (MODULES) (pin 2). If the ON/OFF (MODULES) input is connected to the ground potential, the MODULES OUT output is constantly activated; otherwise it is constantly deactivated. The input is controlled from the DPM 4000 or from an alarm or gong signal module. The input ON/OFF (TOGGLE) can be used for installations, where the PA-system has to be switched "on/off" via remote control (e. A ground potential contact of the input switches the system "on", another one switches the system "off". The ON/OFF (MODULES) input's priority in the "on" state overrides ON/OFF (TOGGLE). The ON/OFF (TOGGLE) condition is also stored for the time of power failure. Switching the appliance's mains switch off always sets the TOGGLE-state to "off" as well. When utilizing the ON/OFF (TOGGLE) and ON/OFF (MODULES), it is important to remember that the pin-assignment of the floating inputs corresponds to the illustration in chapter 5 (figure 2). [. . . ] 6 POWER FAIL OUT OUTPUT 7 DELAY OUTOUTPUT Signals the stable presence of the mains as well as internal 24 V supply voltage via 24 V output voltage; internal resistance 1 k. Signals the PA-system's "ready for operation" state via 24 V output voltage and can be used to control alarm / gong / summing modules of the DEM System. Supply output for the inputs 1 and 2; cannot be used for any other purpose. Supply input for the MODULES input; has either to be connected to pin 9 or needs +24 V supply from an external source. [. . . ]
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