S8AS Datasheet, PDF (24/26 Pages) Omron Electronics LLC – Smart Power Supply

S8AS
• Do not push more than 100 N of force to the terminal block when
tightening screws.
• Be sure to tighten the lock screws on the sides of the screwless
connector after connecting it to the S8AS. When removing a
screwless connector, be sure the lock screws are completely loose
before pulling on the connector.
• Be sure to remove the sheet covering the Product during
installation before turning ON the power.
Installation Environment
• Do not use the Product where it would be subjected to shock or
vibration. A device such as a contact breaker may be a vibration
source. Set the Product as far as possible from possible sources of
shock or vibration. Additionally, install a PFP-M End Plate on each
end of the Product after mounting it to a DIN Rail.
• If the Product is used in an area with excessive electronic noise, be
sure to separate the Product as far as possible from the noise
sources.
Ambient Operating and Storage Environment
• Store the Product at an ambient temperature of −25 to 65°C and
relative humidity of 25% to 90%.
• Internal parts may occasionally be deteriorated or damaged. Do
not use the Product in conditions exceeding the derating curve (in
portion (1) of the Derating Curve on page 8).
• Use the Product where the relative humidity is 25% to 85%.
• Do not use the Product where it would be subjected to direct
sunlight.
• Do not use the Product where it would be subjected to the
possibility of penetration of liquid, foreign substance, or corrosive
gas.
• To maintain performance of the maintenance forecast monitor,
make sure the following conditions are satisfied for long-term
storage. For storage exceeding three months, keep the Product at
a temperature of −20°C to 30°C and a humidity of 25% to 70%.
Output Voltage Adjustment
• The output voltage adjuster (V.ADJ.) may possibly become
damaged. Do not apply more than the required force.
• Do not exceed the rated output capacity and rated total output
current after adjusting the output voltage.
Periodic Inspections
Under normal operating conditions, the Product will require several
years or even more than ten years until the maintenance forecast
monitor function operates. When using the Product for an extended
period of time, perform the following procedure periodically to confirm
that the output for the maintenance forecast monitor function (LFE) is
operating correctly.
a) Change to Run Mode.
b) Confirm that the (LFE) output is ON (i.e., that there is electrical
continuity between (LEF) and (COM)).
Precautions for Correct Use
Tripping Performance
• When the tripping alarm output operates, always remove the cause
of the output first and then reset the alarm.
• When using a load with a fixed-power operation, the S8AS may
cause a cutoff when the power supply is turned OFF.
• Outputs may be cut off by the abnormal voltage protection with
loads that generate reverse peak electromotive force.
• Tripping performance is depends on the ambient operating
temperature. Use the Product within the derating range. Refer to
the Derating Curve on page 8.
• It is conceivable that internal parts may be deteriorated or
damaged. Do not repeatedly perform cutoff or recovery operations
more than necessary.
Maintenance Forecast Monitor Function
The accuracy of the maintenance forecast monitor function will be
reduced in applications where the AC input turns ON and OFF
frequently.
Total Peak Output Current
The S8AS is designed to provide a temporary peak current to provide
the overcurrent required to start load devices.
The total peak output current for all branch outputs combined is given
below. However, if even one of the following conditions is not satisfied
by the total current, all branch outputs will be cut off to ensure safety
based on the amount of peak current and the usage time.
• 240-W Models
Input voltage range: 200 to 240 VAC
Total peak current/Peak current pulse width:
17 A max./2 s max.
15 A max./5 s max.
13 A max./10 s max. 12 A max./20 s max.
• 480-W Models
Input voltage range: 200 to 240 VAC
Total peak current/Peak current pulse width:
27 A max./1 s max.
25 A max./2 s max.
22.5 A max./5 s max.
Note: 1. If the input voltage range is outside of the range given
above, or if the total output current exceeds the maximum
peak current, the S8AS may be cut off due to unstable
internal operation.
2. After the load device has been started, ensure that the total
current in steady state remains within the rated values.
3. When the peak current has exceeded the rated current, do
not allow the peak current to flow again for the next 60
seconds.
Startup Sequence and Shutdown Sequence
The sequencing functions are designed for the branch outputs of one
S8AS. There is no synchronizing processing between S8AS when
more than one S8AS is used.
Startup Delay
The startup delay will not operate when a relay or other device is used
for ON/OFF control on the output side of the S8AS, so a cutoff
operation may occasionally occur.
Dielectric Strength Test
• The S8AS is designed to withstand 3,000 VAC for 1 minute
between the AC input terminals collectively and the branch output,
I/O signal, or communications terminals collectively. When testing,
set the cutoff current for the withstand voltage test device to 20 mA.
• The S8AS may possibly be damaged from the impulse voltage if a
testing device switch is used to abruptly apply or cut off 3000 VAC.
Increase the applied voltage gradually using the voltage
adjustment on the testing device.
• When testing terminals together, always short the specified
terminals so that the voltage is applied to all of the terminals at the
same time.
24