Instruction Manual

BLU-CIF2 PWR RELAY & OF RELAY Wiring Instructions

The voltage from the +24 pin is typically connected to an external power

relay coil, which will then switch 120VAC on to the external equipment.

The PWR RELAY output is thermo-fuse protected, so it will stop supplying

power when the +24 pin exceeds 100mA. The circuit will reset

automatically once the load is disconnected.

The 4-pin OF_1 & OF_2 overflow relay connections are 2-pole “dry

contacts” that are normally open. These contacts will close connecting the

“+” (pin 1) to the “+” (pin 3), and the “-“ (pin 2) to the “-“ (pin 4), when

output port 5 on the DSP is triggered. This is typically used to switch

speaker level signals, so an overflow room can be fed directly from an

amplifier without needing its own dedicated amplifier channel.

Connecting the BLU-CIF2 to the BSS Audio London Series DSP

The BLU-CIF2 ships with four pre-fabricated 12-conductor cables. Each

cable has 3.5mm connectors on both ends. On one end, the 3.5mm

connectors are color-coded green and black, so they match up with either the

Control Port 1 for DSP 1 & Control Port 2 for DSP 2 (Black) connector or

the Logic Inputs (Green) connectors for DSP1 & DSP2 on the far right side

of the CIF2 Board.

Control Inputs Connector

Logic Outputs Connector

There are four separate relay

connectors on the right side of the

CIF2 board. The 2-pin PWR_1 &

PWR_2 connections are used to

power on external equipment. This

connection will supply +24VDC @

100mA on the “+24” pin when logic

out

ut 6 on the DSP is tri

ered.