Rockwell Automation 1771-IBD INSTL INSTR DC (10-30V) INPUT - Manual (Page 6)

DC (10-30V) Input Module 6
Publication 1771-5.53 – April 1999
Important: You can directly drive terminals on a DC (10-30V)
Input Module (cat. no. 1771-IBD Series B) from
terminals on the following modules:
•
DC (10-30V) Output module (cat. no. 1771-OBN)
•
DC (10-60V) Output module (cat. no. 1771-OBD)
•
DC (12-24V) Output module (cat. no. 1771-OB)
•
DC (24V) Output module (cat. no. 1771-OQ)
•
DC (24V) Output module (cat. no. 1771-OQ16)
Important: Use the same dc power source to power both modules
to ensure that ground is at the same potential.
The front panel of your module contains one green module active
indicator, and 16 red status indicators.
The green active indicator turns on when the module is powered. The
red status indicators are provided for system logic side indication of
individual inputs. When a red status indicator lights, voltage is
present on the terminal. The module transfers this information to the
backplane for the processor to read. See ‘‘Troubleshooting” for a
description, probable causes, and recommended actions to take for
common faults based on indicator responses.
Use this table to help you interpret the 1771-IBD Series B status
indicators and to troubleshoot module and system faults.
Indicator Status (color) Description of Fault or System Status Action to Take
Module active ON (green) Normal Indication None
Module active ON (green) and
Input status ON (red) Check for voltage on terminal. If voltage is present, take no action. If no
voltage is present, replace the module.
Module active ON (green) and
Input status OFF Input devices not functioning properly or faulty
input circuitry on module. 1. Check input devices.
2. If input devices are OK, replace the
module.
No voltage on terminal. None
Module active OFF and
Output status ON (red) or OFF Module not functioning properly. Check chassis power supply and
processor. If they are OK, replace the
module.
ACTIVE
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
Module Active
Indicator
(green)
00 to 17
Status
Indicators
(red)
10599-I
Interpreting the Status
Indicators
Troubleshooting