Front Panel Components
Original instructions
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Overview
This section contains an illustration of the front panel of the 170 ADM 690 51 I/O base and a description of the LEDs.
Front Panel Illustration
The front panel of the I/O base is shown in the illustration below.
Components of the I/O module
Label
Description
1
internal interface (ATI) connector
2
locking and ground contact for the adapter
3
LED status display
4
mounting holes for panel mount
5
grounding screw
6
busbar mounting slot
7
locking tab for DIN rail mount
8
sockets for the terminal connectors
LED Illustration
TheLEDs are shown in the illustration below.
LED Descriptions
The LEDs are described in the table below.
Indicator
Condition
Message
Ready
Green
Module is ready to communicate. Operating voltage for internal logic (5 V) is present.
Off
Module not ready.
FUSE 1
Green
Output voltage of outputs 1 ... 4 (one common output voltage for group 1) present and fuse 1 is OK.
Off
Output voltage of outputs 1 ... 4 (one common output voltage for group 1) is not present and/or fuse 1 is defective
FUSE 2
Green
Output voltage of outputs 5 ... 8 (one common output voltage for group 2) present and fuse 1 is OK.
Off
Output voltage of outputs 5 ... 8 (one common output voltage for group 2) is not present and/or fuse 1 is defective
Upper row IN
1...10
Green
Input status (an LED per input);
Input point active, i.e., input carries a 1 signal (logically ON)
Off
Input status (an LED per input);
Input point inactive, i.e., input carries a 0 signal (logically OFF)
Middle row OUT
1,3 ,5 ,7 , 9, 11, 13, 15
Green
Output status (an LED per output);
Output point active, i.e., output carries a 1 signal (logically ON)
Off
Output status (an LED per output)
Output point inactive, i.e., output carries a 0 signal (logically OFF)