FX2N-20PSU DC POWER SUPPLY UNIT
USER’S MANUAL
JY992D85101B
This manual contains text, diagrams and explanations which will guide the reader in the correct installation
and operation of the FX2N-20PSU DC power supply unit. It should be read and understood before
attempting to install or use the unit. Further information can be found in the FX series PLC hardware man-
uals.
If in doubt at any stage during the installation of the FX2N-20PSU DC power supply unit always consult a
professional electrical engineer who is qualified and trained to the local and national standards.
Note’s on the symbology used in this manual
At various times through out this manual certain symbols will be used to highlight points of infor-
mation which are intended to ensure the users personal safety and protect the integrity of the
equipment. Whenever any of the following symbols are encountered, its associated note must be
read and understood. Each of the symbols used will now be listed with a brief description of its
meaning.
Hardware warnings
1) Indicates that the identified danger WILL cause physical and property damage.
2) Indicates that the identified danger could POSSIBLY cause physical and property damage.
1. INTRODUCTION
The DC power supply unit FX2N-20PSU is available as the following applications.
• Power supply of 24V DC power type PLC
• Power supply of special extension block of PLC
• Power supply of sensor connected to input of PLC
• Power supply of DC load connected to output of PLC
• Power supply of display unit such as graphic operation terminal (GOT)
2. EXTERNAL DIMENSION
AC85 to 264V
24V+ 24V-
24V-
24V+
24V+
24V-
24V+
24V-
LN
75(2.95)
90(3.5)
60(2.36)
7.5(0.3)
4(0.16)
4(0.16)
7.5(0.3)
52(2.05)
98(3.85)
Mass Approximately 0.3 kg
Outer color Munsell 0.08GY/7.64/0.81
DIN rail 35mm(1.38)
Unit mm(inches)
2-f4.5
(0.18)
3. GENERAL SPECIFICATIONS
Item Description
Operating Tempera-
ture 0 to 55 °C (32 to 131 °F)
Storage Temperature -20 to 70 °C (-4 to 158 °F)
Operating Humidity 35 to 85% Relative Humidity, No condensation
storage Humidity 35 to 90% Relative Humidity, No condensation
Vibration Resistance
- Direct Mounting
10 - 57 Hz: 0.75 mm Half Amplitude
57 - 150 Hz: 9.8 m/s2Acceleration
Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Vibration Resistance
- DIN rail Mounting
10 - 57 Hz: 0.035 mm Half Amplitude
57 - 150 Hz: 4.9 m/s2Acceleration
Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Shock Resistance 147m/s2Acceleration, Action Time: 11 ms
3 times in each direction X, Y, and Z
Noise Immunity 1000Vp-p, 1microsecond, 30 - 100 Hz, tested by noise simulator
Dielectric Withstand
Volta ge 500V AC > 1 min, tested between all points, terminals and ground
Insulation Resistance 5MΩ> at 500V DC, tested between all points, terminals and ground
Ground Class 3 (100 Ωor less)
Common grounding
(good)
Common grounding
(not allowed)
Dedicated grounding
(best)
PLC/power
supply
Another
equipment
PLC/power
supply
Another
equipment
PLC/power
supply
Another
equipment
4. PERFORMANCE SPECOFOCATIONS
*1 The available output current varies depending on the ambient operating temperature. Use the FX2N-
20PSU in the available range in accordance with the output derating graph shown above.
*2 If the output current flows beyond the specified value, the overcurrent protection circuit is actuated
and the output voltage drops.
When the overcurrent status or the short-circuit status returns to acceptable levels, the output voltage
automatically recovers.
*3 If the voltage beyond the specified value is generated by an internal failure, etc., the output is shut
down so that high voltage is not output. When the voltage comes from a load circuit connected to an
output terminal or when overvoltage is input from the outside, the overvoltage protection circuit may
be actuated.
When the overvoltage protection circuit is actuated, the output is shut down and does not automati-
cally recover. Ask for inspection and repair after such an occurance.
Input
Input voltage 85 to 264V AC
Frequency 50/60Hz
Fuse rating 3.15A (built in)
Rush current 60A/200V AC maximum
Output
Output voltage 24V DC ± 10%
Output current 2A (maximum), 0.2A (minimum)
(Derating is performed if ambient temperature exceeds 40 °C.)*1
Ripple noise 500mVp-p or less
Holding time 10ms/100V AC
Protection
function
Protection against
overcurrent *2
Actuated when current becomes 110 - 160% or more, voltage drop
occurs automatic recovery
Protection against
overvoltage *3
Actuated when voltage becomes 110 - 140% or more, output shuts-
down, no automatic recovery (diode clamp)
Output indication Green LED(POWER) is lit while voltage is output.
Others Serial/parallel operation with other power supply units is not allowed.
(See Section 6.3)
0
010 20 30 40 50 55
20
40
60
80
100
Ambient temperature (°C)
Load ratio (%)
Guidelines for the safety of the user and protection of the FX2N-20PSU DC
POWER SUPPLY UNIT
• This manual has been written to be used by trained and competent personnel. This is defined
by the European directives for machinery, low voltage and EMC.
• If in doubt at any stage during the installation of the FX2N-20PSU always consult a profes-
sional electrical engineer who is qualified and trained to the local and national standards. If in
doubt about the operation or use of the FX2N-20PSU please consult the nearest Mitsubishi
Electric distributor.
• Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential
damage that may arise as a result of the installation or use of this equipment.
• All examples and diagrams shown in this manual are intended only as an aid to understand-
ing the text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for
actual use of the product based on these illustrative examples.
• Owing to the very great variety in possible application of this equipment, you must satisfy
yourself as to its suitability for your specific application.
