bittner XB400 - Connection of Ampliﬁers; Control Modes; Logic of Alive Contact; Signal and Ampliﬁer Inputs

To Next Page

To Previous Page

Page 64

3 Speciﬁcations of the Devices

3.13.5.3 Logic of Alive Contact

The DIP switches 1 to 8 of block SW2 determine the control logic of the connected alive contacts in case of

a failure:

• ON: positive logic (contact open if amp fails)

• OFF: negative logic (contact closed if amp fails)

Caution

If the AX16 is connected to an SXL II, these DIP switches are disabled for every ampliﬁer, which

is also connected via its data port to the SXL II (refer to Split Mode section 3.14.9.5).

3.13.5.4 Control Modes

The backup switching may be activated in two different ways, which are selected by DIP switch 3 of block

SW3:

• ON: Control by a connected SXL II

• OFF: Control by the ALIVE contacts of the connected ampliﬁers or any other potential-free contact

Caution

In case of using contact closures and the SXL II (refer to Split Mode section 3.14.9.5), the DIP

switch has to be set to ON.

When using the contact inputs, a single contact will control one ampliﬁer (2 channels). This contact is

directly compatible with the ALIVE (fault detection) contacts of Bittner Audio ampliﬁers.

In addition, any other potential-free contact may be used. The switching will take place after the contact

has been activated (ampliﬁer defect will be indicated by either an opened or a closed contact). This logic

operation (positive-negative) needs to be set with DIP Switch block SW 2 for each ampliﬁer.

3.13.6 Connection of Ampliﬁers

3.13.6.1 Signal and Ampliﬁer Inputs

The signal inputs of the individual channels may be connected to the PHOENIX terminals Signal Input CH1

– CH14.

Figure 3.44: AX16 - Signal Inputs

Caution

Since the backup ampliﬁer does not have its own input, only 14 inputs are needed on the AX16.

The input signal of the backup ampliﬁer is made up of the input channels of the faulty ampliﬁer.

 2016 Bittner Audio Int. GmbH