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Correct
AC (L)
S8VM
AC (N)
CB
CB
AC (L)
S8VM
AC (N)
Use 2-conductor shielded cable as connection wire (* 1).
Adjust the output voltage of each Power Supply to the same value
within 1% or 100 mV, whichever is smaller, using the output voltage
adjuster (V. ADJ).
Parallel operation is used to increase static capacity. The output volt-
age may drop with sudden load fluctuations.
There may be steps in the rising waveform of the output voltage dur-
ing parallel operation.
Remove the standard supplied connector and prepare a connector
separately.
In Case There Is No Output Voltage
15/30/50/100/150-W Models
The possible cause for no output voltage may be that the overcurrent
protection or overvoltage protection has operated. The internal pro-
tection circuit may operate if a large amount of surge voltage such as
a lightening surge occurs while turning ON the input power.
If there is no output voltage even after checking the following points
please contact your OMRON representative.
Check the overload protected status.
Check whether the load is in overload status or is short-circuited.
Remove the load wires when checking.
Attempt to clear the overvoltage or internal protection
function.
Turn OFF the input power once and leave it OFF for at least 3 min-
utes. Then turn it ON again to see if this clears the condition.
Check whether the +S terminal or S terminal is open, i.e., if the
short bar has been removed. (S8VM-100@@@@/S8VM-150@@@@
only)
Check if the output voltage has been adjusted to more than +20% of
the rated value using the output voltage adjuster (V. ADJ).
300/600/1,500-W Models
The possible cause for no output voltage may be that the overcurrent
protection, overvoltage protection, or overheat protection has oper-
ated. Alternatively, the built-in fan may have stopped or the remote
control function may be OFF.
If there is no output voltage even after checking the following points,
please contact your OMRON representative.
Check the overload protected status.
Check whether the load is in overload status or is short-circuited.
Remove the load wires when checking.
Attempt to clear the overvoltage protection function.
Turn OFF the input power once and leave it OFF for at least 3 min-
utes. Then turn it ON again to see if this clears the condition.
Check whether the +S terminal or -S terminal is open, i.e., if the short
bar has been removed.
Check if the output voltage has been adjusted to more than +20% of
the rated value using the output voltage adjuster (V. ADJ).
V
CN
V
CBG
*1
CBG
V
CN
V
Check the overheat protected status.
Turn OFF the input power and leave it OFF until the Power Supply
cools sufficiently. Turn it ON again to see if this clears the condition.
Check if the built-in fan motor has stopped.
Check if the built-in fan motor has stopped. The fan is a consumable
part.
Check the remote control function.
Check if the +RC and -RC pins are open. Make the correct connec-
tions as specified.
Fan Replacement
300/600/1,500-W Models
Consult with OMRON regarding fan replacement. OMRON will
replace fans for a fee. A replacement Fan Unit (S82Y-VM@@FAN) is
available. Use the curve in the graph below as a rough measure of
replacement timing.
10
7
5
3
2
1
0
40
The Power Supply will not conform to safety standards if the cus-
tomer replaces the fan.
Buzzing Noise when the Input Is
Turned ON
50/100/150/300/600/1,500-W Models
A harmonic current suppression circuit is built into the input power.
This circuit can create noise when the input is turned ON, but it will
last only until internal operation stabilizes and does not indicate any
problem in the Power Supply.
DIN Rail Mounting
15/30/50/100/150/300/600-W Models
When mounting to a DIN Rail, lower the
S8VM onto the Rail until the Rail stopper
clicks into place, hook section A over the
edge of the Rail and push in the direction of
B.
To remove the S8VM from the DIN
Rail, insert a screwdriver into section
C and pull the S8VM away from the
Rail.
Switch Mode Power Supply
50
60
70
80
100
Exhaust temperature: C
Note: Expected fan service life
Exhaust temperature 45 C: 45,000 hours
Exhaust temperature 80 C: 11,000 hours
30 mm min.
Rail stopper
S8VM
35
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