Number Item Description
47 Telephone/Emergency input The same as input (46), but with an input sensitivity of 100 mV,
impedance 600 ohm.
49 Call station connector RJ45 connector for up to six PLN-6CS call stations connected in
cascade. Ordinary shielded or unshielded Cat-5 cables can be used for
interconnection. Maximum length to the last call station is 600 m. Pin
assignment of this connector:
– Pin 1: Audio IN+
– Pin 2: Audio IN-
– Pin 3: Ground
– Pin 4: Not connected
– Pin 5: Not connected
– Pin 6: + 24 Vdc < 800 mA
– Pin 7: RS485+
– Pin 8: RS485-
50
Wall Panel connector RJ45 connector for one PLN-4S6Z Wall Panel. Ordinary shielded or
unshielded Cat-5 cables can be used for interconnection. Pin
assignment of this connector:
– Pin 1: Audio IN+
– Pin 2: Audio IN-
– Pin 3: Ground
– Pin 4: Not connected
– Pin 5: Not connected
– Pin 6: + 24 VDC < 800 mA
– Pin 7: RS485+
– Pin 8: RS485-
51
Output for external amplifier 0 dBV, 600 ohm balanced output on XLR female connector for
connection to an external amplifier. To be used as a second amplifier in
case of dual‑channel mode or as a spare amplifier.
52 Rec out Record output on RCA socket.
– This output provides a 350 mV, unbalanced, mono output signal
before the MASTER volume control.
53 Insert in Input of the power amplifier stage. In most cases this input is directly
connected to the “Insert out” terminal (54), but you can connect an
equalizer or other audio equipment between “Insert out” and “Insert
in”.
– 0 dBV, 10 kohm unbalanced input RCA socket.
54 Insert out The output of internal pre-amplifier stage.
– 0 dBV, 600 ohm unbalanced input RCA socket.
56 RESERVED Not used.
57 Ext Amp in 0-100V terminal The output of the optional external power amplifier is connected to this
input. The external amplifier can be used as spare amplifier or as a
second amplifier in dual‑channel mode.
– Current rating maximum 7 A (50 Hz to 20 kHz).
16 en | Connection Plena All-in-One System
2014.09 | V1.2 | Installation and Operating Manual Bosch Security Systems B.V.
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