Omron SYSMAC CV1000 Installation Guide

93
Input Units
Symptom Cause Remedy
Not all inputs turn ON or in-
di li
(1) Power is not supplied to Input Unit. Supply power
dicators are not lit.
(2) Supply voltage is low. Adjust supply voltage to within rated range.
(3) Terminal block mounting screws are
loose.
Tighten screws.
(4) Faulty contact of terminal block con-
nector.
Replace terminal block connector.
Not all inputs turn ON (indi-
cator lit).
Input circuit is faulty. Replace Unit.
Not all inputs turn OFF. Input circuit is faulty. Replace Unit.
Specific bit does not turn
ON
(1) Input device is faulty. Replace input devices.
ON.
(2) Input wiring disconnected. Check input wiring
(3) Terminal block screws are loose. Tighten screws
(4) Faulty terminal block connector con-
tact.
Replace terminal block connector.
(5) Too short ON time of external input. Adjust input device
(6) Faulty input circuit Replace Unit.
(7) Input bit number is used for output in-
struction.
Correct program.
Specific bit does not turn
OFF
(1) Input circuit is faulty. Replace Unit.
OFF.
(2) Input bit number is used for output in-
struction.
Correct program.
Input irregularly turns ON/
OFF.
(1) External input voltage is low. Adjust external input voltage to within rated
range.
(2) Malfunction due to noise. Protective measures against noise, such
as:
(1) Install surge suppressor.
(2) Install insulation transformer.
(3) Install shielded cable.
(3) Terminal block screws are loose. Tighten screws
(4) Faulty terminal block connector con-
tact.
Replace terminal block connector.
Error occurs in units of 8
i
(1) Common terminal screws are loose. Tighten screws
points.
(2) Faulty terminal block connector con-
tact.
Replace terminal block connector.
(3) Faulty data bus Replace Unit.
(4) Faulty CPU Replace CPU.
Input indicator is not lit in
normal operation.
Faulty indicator Replace Unit.
Error Processing and Correction Section 5-3

Omron SYSMAC CV1000 Specifications

General

Brand	Omron
Model	SYSMAC CV1000
Category	Controller
Language	English