d&b audiotechnik 40D - GPI;GPO (Hardware Description); FAULT Connector

Startup
5.2.5 GPI/GPO (Hardware description)
Up to eight opto-coupled GPI pins [5] (General Purpose Input)
and up to four GPO pins [6] (General Purpose Output) are
available as additional digital control lines. This enables external
control and detection functions.
Note: A detailed description of how to configure the GPIOs
and assign the available software objects (functions)
correspondingly is given in Þ Chapter 6.2 "GPIO
Configuration" on page 25.
Each GPI provides either level (Hi/Lo active - non-latching) or edge
(rising/falling - latching) triggering.
Note: When using a GPI or GPO contact, observe the
following:
▪ An external DC power supply is required.
▪ GPI: The corresponding pin is connected via an opto-
coupler with a serial resistance of 5.4 kΩ.
▪ GPO: The corresponding pin is connected to ground
(GND/
) via a relay (Low-Side-Switch).
Make sure the current per GPO pin does not exceed 1 A.
Technical specifications
External power supply
24 V DC ±25% (18 – 30 V DC)/150 W
GPI 8 x Opto-coupled (galvanic isolation)
High-level 18 ... 30 V DC
Low-level 0 ... 9 V DC
Serial resistance 5.4 kOhms
Forward voltage drop (U
f (max.)
)
3.7 V
Input current draw per pin @ 9/18/24/30 V DC
1.5/2.6/3.7/4.8 mA
Connector type 1 x 9-pin Phoenix Euroblock male
Pin assignment ( ) GND, GPIs 1 – 8
GPO 4 x Low-Side-Switch-Relay
High-state Closed (connected to common GPO GND)
Low-state Open (high resistive)
Max. current draw 1 A/Total: 4 A
Connector type 1 x 5-pin Phoenix Euroblock male
Pin assignment ( ) GND, GPOs 1 – 4
5.2.6 FAULT
An additional 3-pin Phoenix Euroblock fault contact [7] is provided
allowing a general device error to be remotely indicated.
Note:
▪ The assignment of the corresponding software object is fixed
and cannot be changed by the user.
▪ During a firmware update, the fault contact switches to status
b), as shown in the graphic opposite.
NO
Normally Open
C Common
NC Normally Closed


GPI | GPO
Schematic circuit diagrams and logic level chart (GPI)
FAULT
Schematic circuit diagram and switching status:
a) Device is On and operating
b) Device is Off or general device error
d&b 40D Reference manual 1.3 en18