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PSA-24/PSA-24L 

(24V Power Supply) 

First Step Guide 

Second Edition 

 

Thank you for purchasing our product. 
Make sure to read the Safety Guide and detailed Instruction Manual (DVD) included with the product in addition to   
this First Step Guide to ensure correct use. 
This Instruction Manual is original.

 

 
 
 
 

 

 Using or copying all or part of this Instruction Manual without permission is prohibited.

 

 The company names, names of products and trademarks of each company shown in the sentences are registered 

trademarks.

 

 

Caution in Handling                                                                                             

 PSA-24/PSA-24L Power Supplies are the power supply units dedicated for IAI 

controllers of the 24V DC type. 

 Do not attempt to connect in parallel several power supply units in different 

capacities. Do not attempt to connect PSA-24 (without fan), PSA-24L (with fan) 
and PS-24 in parallel. Connect PSA-24 with only PSA-24, or PSA-24L only with 
PSA-24L in parallel. 

 

This product is comprised of the following parts if it is of standard configuration. 
If you find any fault in the contained model or any missing parts, contact us or our distributor. 

1.  Parts (The option is excluded.) 

No. Part 

Name 

Model 

24V Power Supply Main Unit 

Refer to “2. How to read the model plate”, “3. How 
to read the model No.” 

Accessories 

First Step Guide (This Manual) 

ME0380 

3 Instruction 

Manual 

(DVD) 

 

4 Safety 

Guide 

M0194 

2.  How to read the model plate 
 

 

 

 

 

3.  How to read the model No. 

 
 
 
 
 
 
 

 

 

 
 
 

4.  Instruction manuals related to this product, which are contained in the instruction 

manual (DVD) 

No. Name 

Manual 

No. 

PSA-24/PSA-24L (24V Power Supply) Instruction Manual 

ME0379 

 

Basic Specifications 

Specifications 

Specification Item 

PSA-24 PSA-24L 

Rated Voltage DC Output 

24V±10% (fluctuates depending on duty) 

Rated DC Current Output 8.5A 13.8A 
Peak Maximum DC 
Current Output 

17A 

Rated Output Wattage 

204W 

330W 

Efficiency 

100V AC : 86% 
200V AC : 90% 

Rated Input Voltage 
(frequency) 

100V AC to 230V AC ± 10% 

[50/60Hz] 

Input Current 

100V AC: 2.5A 

200V AC : 1.4A 

(Continuous Rated Output 204W) 

100V AC : 3.9A 
200V AC : 1.9A 

(Continuous Rated Output 330W) 

Output Holding Time 

20ms 

(Continuous Rated Output 204W) 

12ms 

(Continuous Rated Output 330W) 

Protection Circuit 

Over current protection, over voltage protection, over temperature protection,   

over load protection, Input low voltage, Fan rotation drop 

Parallel Operation 

Applicable 

Operation Ambient 
Temp. 

0 to 55°C (with derating) 

Operation Ambient 
Humidity 

85%RH or less 

Cooling Method 

Natural air-cooling 

Forced air cooling 

Voltage Durability 

3000V AC 1min. (AC Input - DC Output) 

2000V AC 1min. (AC Input - FG) 

500V AC 1min. (DC Output - FG) 

Insulation Strength 

50M

 min. at 500V DC 

Altitude 2,000m 

or 

less 

Overvoltage Category 

 

Pollution Level 

Installation Area 

Indoor 

Circuit System 

LCC Resonant System 

Mass 805g 

845g 

 

Installation Environment 

Do not use this product in the following environment. 

• Location where the surrounding air temperature exceeds the range of 0 to 55°C 
• Location where condensation occurs due to abrupt temperature changes 
• Relative humidity greater than 85%RH 
• Location exposed to corrosive gases or combustible gases 
• Location exposed to significant amount of dust, salt or iron powder 
• Location subject to direct vibration or impact 
• Location exposed to direct sunlight 
• Location where the product may come in contact with water, oil or chemical droplets 

When using the product in any of the locations specified below, provide a 
sufficient shield. 

• Location subject to electrostatic noise 
• Location where high electrical or magnetic field is present 
• Location with the mains or power lines passing nearby 
 

Installation and Noise Elimination 

1. Grounding 

 

 

 

 

 

 

 

 

 

 

 

2

Heatsink and Mounting Method

 

In the figures below show the minimum distance between the control panel and walls and 
minimum distance among power sources in parallel operation. 
Also, make sure to keep the temperature below the ambient temperature specified for the 
power source when design and install the control panel.

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 

Caution: The main housing of the product gets so hot that it sometimes gives you a 

burn as it works as a heat sink. 
Do not touch while the power is on, or even after the power is off until the 
heat calms down.

 

 

 
 
 
 
 
 

 
  

Product Check 

Warning :  Operation of this equipment requires detailed installation and operation instructions which are 

provided on the DVD Manual included in the box this device was packaged in. It should be retained 
with this device at all times. 

 

A copy of the Manual can be requested by contacting your nearest IAI Sales Office listed at the 
back cover of the Instruction Manual or on the First Step Guide. 

P S A - 2 4 - L  

<Fan-Equipped Option> 
  No Description  : Standard Type (204W) 
 L 

: Fan-Equipped Type (330W) 

<Type> 
 24 

: 24V power supply 

  FU 

:  Fan Unit (Unit Itself) 

Direction of air flow for forced air cooling (natural convection) 

2A 

*  Condition of Use for PSA-24 External Fan 
When forced air cooling is to be conducted, follow the condition when certified by UL. 
As an option to follow the condition when certified by UL, there is PSA-FU.

 

 

PSA-24 

Model

Serial No.

Rated Input

Rated Output

Model

Serial No.

Rated Input

Rated Output

 

PSA-24L 

PSA-24 

PSA-24L 

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