Dealing With Abnormalities; Maintenance And Inspections - Omron V600 Series Operation Manual

Maintenance and Inspections

6-4

Dealing with Abnormalities

6-4-1 Noise
No. Problem conditions
1 Occurs with large capacity
motor, transformers, or
capacitors when power is
applied.
2 Occurs irregularly
3 Mis-operation such as
turning input signal on
when it is off
Improving Ground
Dealing with Power Supply Noise
6-5 Maintenance and Inspections
The following three items are usual causes of problems in the ID Controller.
Noise. Take countermeasures to deal with noise.
Breakdowns in external equipment, in which case repairs are required.
ID Controller breakdown, in which case repairs are required.
When system mis-operation occurs due to noise, refer to the following table to
take appropriate countermeasures to eliminate the influence of noise.
Probable cause
Instantaneous There exists an abnormality in communications between
voltage drop in R/W Heads and DCs. Check communications speed,
power supply distance, and obstacles.
system due to
large-scale load
surge current
Common mode Supply power via a 1:1 non-grounded insulated transformer.
noise due to above
Avoid common grounds with other large-scale loads, and
cause
ground the ID Controller independently.
Noise on power Supply power via a 1:1 non-grounded insulated transformer
lines or a noise filter.
Induced noise in Lay input signal grounds away from other power lines.
input wiring
If noise effects are large, insert inside metal line pipes or
use shielded cables.
Other ID
equipment Controller
Power
supply
Daily and other regular inspections are required to keep the ID Controller func-
tions operating at optimal levels. The ID Controller main sections are configured
from IC components, and consequently there are almost no consumable items,
but the following problems may occur due to environmental or operating condi-
tions.
Excessive voltage or excessive current causing element deterioration.
Use in high ambient temperature locations can cause long term stress leading
to the deterioration of elements.
Deterioration of insulation due to humidity, dust, or deterioration in connector
connections.
Corrosive gas causing bad connector connections or corroding elements.
Action
Other ID
equipment controller
Twist lines and ensure that
Noise filter
they are not parallel to other
power lines
Section 6-5
GR,
Class 3 ground
ID
Controller
99