2N Telecommunications 932091E Handleiding (110 Pagina's)

Handleiding

2N TELEKOMUNIKACE a.s., www.2n.cz 56/110

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Warning

When you connect a device containing a coil, such as a relay or an

electromagnetic lock, it is necessary to protect the intercom against voltage

peak while switching off the induction load. For this way of protection we

recommend a diode 1A / 1000V (e.g., 1N4007, 1N5407, 1N5408) connected

antiparallel to the device.

Factory Default Resetting (PCB version 555v3 and higher)

For resetting device to default settings press and hold SW1 button. Wait for the first

sound signalization and then release the button. If you press the button for short time

device will reboot only. SW1 button is available in devices with PCB version 555v3 and

higher. For devices with PCB version 555v2 see procedure below.

Factory Default Resetting (PCB version 555v2)

Disconnect the device from the power supply.

Move the short-circuit jumper on connector X6 into the position. Default setup

Configuration jumpers (X6) are located in the right-hand upper corner of the

PCB.

Reconnect the power supply and wait for a start signalling sound.

Disconnect the device from the power supply.

Move the short-circuit jumper on connector X6 into the Normal operation

position.

Reconnect the power supply. The device will be reset to factory default.

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