Dbx SC 64 Guide d'installation télécharger pdf (Page 13)

OPTO Output

In addition to the six standard logic outputs, there is an isolated output, which fails safe

(open circuit) if the unit becomes faulty.

1CC 2 3 4 5 6

7 8 R R

NCCNO

C 1 2 3 4 5 6

RELAY OPTO

LOGIC OUTPUTSCONTROL INPUTS

OPTO Output

+supply

ground

Logic Outputs

Used to connect ‘tally’ indicator LED’s or relays. There are six standard LOGIC OUTPUTS which

produce 0V or +5V DC via an internal 440 Ohm resistor and one internally connected common

(ground) connection C. Each logic output pin can sink up to 60mA.

An LED connected between one output (Anode, A) and common (Cathode, K) will illuminate

when the logic output is activated, without requiring any external current limiting resistor.

A high sensitivity relay (such as a reed relay) may be driven by connecting four outputs in

parallel. This arrangement will develop 4V across a 500-Ohm coil, providing that all four

outputs are made logic 1 simultaneously.

1CC 2 3 4 5 6

7 8 R R

NCCNO

C 1 2 3 4 5 6

RELAY OPTO

LOGIC OUTPUTSCONTROL INPUTS

LED

relay

Logic Outputs

Section 3

Wiring

SC 32 / SC 64SC 32 / SC 64

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

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Dbx SC 64 Guide d'installation Page 13