IDEC PS3L Series Connection Diagram
PS3L Series Power Supplies
Internal Schematic Diagrams
PS3L-A/B/C
PS3L-D
Fuse
L
INPUT
N
GND
Note∗:The PS3L-A does not have the photocoupler
because of the zener limiter method.
Fuse
L
INPUT
N
GND
Line Filter
Line Filter
Rectifying Circuit
Rectifying Circuit
Smoothing Circuit
Inrush Current
Suppression Circuit
Inrush Current
Suppression Circuit
Harmonic Current
Suppression Circuit
Control Circuit
Switching Circuit
Overcurrent
Protection
Control Circuit
Switching Circuit
Smoothing Circuit
Control Circuit
Photocoupler Photocoupler∗
Overcurrent
Protection
Rectifying/
Smoothing Circuit
Overvoltage
Detection
Output Voltage
Detection
Rectifying/
Smoothing Circuit
Overvoltage
Detection
+V
OUTPUT
-V
Output Adjusting VR
+V
OUTPUT
-V
PS3L-E/F
L
PS3L-G
Power Supplies
INPUT
GND
INPUT
GND
Photocoupler Photocoupler
Fuse
L
N
Fuse
L
N
Line Filter
Line Filter
Rectifying Circuit
Inrush Current
Suppression Circuit
Rectifying Circuit
Harmonic Current
Suppression Circuit
Control Circuit
Harmonic Current
Suppression Circuit
Control Circuit
Inrush Current
Suppression Circuit
Switching Circuit
Smoothing Circuit
Control Circuit
Switching Circuit
Smoothing Circuit
Control Circuit
Overcurrent
Protection
Overcurrent
Protection
Photocoupler Photocoupler
Output Voltage
Detection
Rectifying/
Smoothing Circuit
Overvoltage
Detection
Output Voltage
Detection
Rectifying/
Smoothing Circuit
Overvoltage
Detection
Output Adjusting VR
Output Adjusting VR
+S
+V
OUTPUT
-V
-S
+S
+V
OUTPUT
-V
-S
Photocoupler Photocoupler
Output Voltage
Detection
Output Adjusting VR
L-16 www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC
Power Supplies PS3L Series
Terminal Markings
PS3L-A/B PS3L-C/D
LED
V.ADJ
+V
-V
AC(L)
AC(N)
Finger-safe Type
LED
V.A DJ
+V
-V
AC(L)
AC(N)
Finger-safe Type
PS3L-E/F PS3L-G
LED
V.ADJ
+V
-V
AC(L)
AC(N)
Finger-safe Type
LED
V.A DJ
+V
-V
AC(L)
AC(N)
Marking Name Description
V.ADJ Output Voltage Adjustment
LED Operation Indicator (Green) Lights on when the output voltage is on.
+V
–V
DC Output Terminals
Ground Terminal
AC Input Terminal
Allows adjustment within ±10%. Turning clockwise increases the
output voltage.
+V: Positive output terminal
–V: Negative output terminal
Grounding the terminal reduces high-frequency currents caused by
switching.
Accepts a wide range of voltage and frequency.
Polarity is irrelevant when using a DC input.
Finger-safe Type
L
Power Supplies
www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC L-17
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