Dynacord DPP 4012, DPP 4004 Dynacord, Promatrix System, Procedures with occurring mains failure

DYNACORD PROMATRIX SYSTEM

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. g. systems that include DEM-modules). 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).

The ON/OFF (TOGGLE) function is deactivated when the appliance is shipped from the factory. To activate the function, the appliance has to be separated from the mains and the internal jumper has to be set to “open”.

This input can also be used to detect whether another phase failed. The corresponding jumper must be in place. When short-circuiting the contact and ground, the appliance reacts as if its own mains failed. In case external phase-monitoring is not wanted, leave this input unused.

The control output (pin 4) MAINS REMOTE ON on the REMOTE socket (10) carries ground potential when the output MODULES OUT (14) is switched on and with the mains supply being constantly present. This output can be used to switch remotely controllable power amplifiers of the PROMATRIX and the DEM Series to mains supply.

The control output (pin 5) BATTERY REMOTE ON on the REMOTE socket (10) carries ground potential when the output MODULES OUT (14) is switched on and with the mains supply being unstable. This output can be used to switch remotely controllable power amplifiers of the PROMATRIX and the DEM Series to battery supply.

The control output (pin 6) POWER FAIL OUT on the REMOTE socket (10) signals the loss of the mains supply (main under voltage, mains failure, temperature overload with insufficient output voltage of the switch-mode power supply). An output voltage of +24 V indicates that the mains supply is present and stable. The output’s internal resistance is 1 kΩ. It is meant for the connection of the DPM 4000, indicating mains failure conditions.

The control output (pin 7) DELAY OUT on the REMOTE socket (10) is switched to +24 V with a delay of approximately 6 seconds after activating the output MODULES OUT. This function can be used to signal that the installation is ready for operation, after booting the system. In installations incorporating DEM-modules, the output provides the “release” function.

Procedures with occurring mains failure

In a standard application with mains and emergency battery supply, the outputs SWITCHED OUT and MODULES OUT are switched to battery supply when a mains failure occurs. Despite, POWER FAIL OUT signals the loss of mains power and the connected power amplifiers are switched from mains supply to battery supply via the outputs MAINS REMOTE ON and BATTERY REMOTE ON. When the mains returns, these functions are reversed after a delay of approximately 600 ms.

In case the power is gone for a longer period of time, the battery serves as emergency power supply until the cut-off voltage of 21 V is reached. When declining that threshold for the first time, all outputs are being switched off. After the mains being present and stable again, the outputs are switched on again. This prevents over-discharging the battery.

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