Advanced Industrial Automation
Momentary drop
in output voltage
DC LOW1 (Yellow LED) lit
Due most likely to a fault on the
input of the power supply or a
transient abnormality in the load.
Gradual drop in output voltage
to below 20 V; remaining low
DC LOW2 (Red LED) lit
Due most likely to degradation
in power supply components due
to age.
Output voltage remains low
following sudden voltage drop
DC LOW1 & 2 (red and
yellow LEDs) lit
Due most likely to a fault such
as a short circuit in the load.
Early warning
are due to deterioration of the power supply, abnormal input
or an abnormality in the electrical circuit of the cabinet by
means of 2 LEDs (yellow and red) on the front of the housing.
Early-warning system
In addition to the LED indication, the 24 V models with output
powers of 50 W and higher also provide an undervoltage alarm
output. This can convey an on/off signal through a wire to, for
example, a PLC or HMI to help provide a visible fault warning
at a remote location. The signal can also be used to switch
on a lamp or cause it to flash continuously.
Timely, efficient on-site troubleshooting for optimum
quality management
The S8VM series is unique in offering an undervoltage alarm
with a diagnostic function to aid on-site troubleshooting.
This enables you to go straight to the heart of a problem,
whether in the mains supply, the electrical circuit of the cabinet
or the power supply itself. The result – fast, effective remedial
action with no costly delays!
Featured on all 24 V output power supplies, the S8VM’s
troubleshooting function lets you determine whether faults
Output voltage
Time
ON ON
ON OFF
1
2
Output voltage
Time
ON
1
2
Output voltage
Time
ON
ON
1
2
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