IAI PSA-24 User manual

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.
CautioninHandling
●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
1 24V Power Supply Main Unit Refer to “2. How to read the model plate”, “3. How
to read the model No.”
Accessories
2 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.
1 PS
A
-24/PS
A
-24L (24V Power Supply) Instruction Manual ME0379
Basic Specifications
Specifications
Specification Item PS
A
-24 PS
A
-24L
Rated Voltage DC Outpu
t
24V±10% (fluctuates depending on duty)
Rated DC Current Outpu
t
8.5
A
13.8
A
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 ai
r
-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 Ⅱ
Pollution Level 2
Installation Area Indoo
r
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.
PSA-24-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

External Dimensions
●PSA-24
●PSA-24L
Name and Function of Each Part
[1] Connector for FAN Connection
It is the connector for fan connection when using at 330W for the continuous rated output.
Connector Names on PCB side : DF11-4DP-2DS (24) (HIROSE ELECTRIC CO., LTD.)
Pin Numbe
r
Signal Description
1 24V Fan Power Supply
2 CONNECT
Connection Recognition Signal
(Connected : H / Unconnected : L)
3 GND GND for Fan
4 PULSE Fan Rotation Pulse
[2] Connector for Communication
It is the connector to monitor the status data inside the power source by communication.
There are two inlets in order to enable communication with multiple power sources in
multi-drop wiring. It can be connected to either of the inlets because the differential signal
on each inlet is short-circuited with each other inside. The connector on the cable is
enclosed.
Connector Names on PCB side : 0221-26-6615-06THT (DINKLE)
Connector Names on Cable Side (Accessories) : 0221-2403 (DINKLE)
Pin Numbe
r
Signal Description
1 SD+ Positive Side of RS485 Differential Signal
2 SD- Negative Side of RS485 Differential Signal
3 GND
4 SD+ Positive Side of RS485 Differential Signal
5 SD- Negative Side of RS485 Differential Signal
6 GND
* There is no impact to the operation of the power source itself even if there is no
communication connector connected.
[3] Address Switch for Communication
Set up the slave address assignment in communication for when connecting multiple
power sources in multi-drop wiring and monitoring the status by communication.
Switch Names : DRR7016C (NIDEC COPAL ELECTRONICS CORPORATION)
Item Description
Initial Setting “0”
Range for
Setting “0” to “F”
[4] Fan Unit
Unit to connect when using at 330W for continuous rated output (PSA-24L)
[5] FAN Alarm LED Lamp
[6] Normal Operation LED Lamp
This power source is equipped with two types of LED lamps as shown below.
Description on
Panel Display Colo
r
Status Description
FAN Orange
Illuminated Error in Fan Rotation
Flashing Warning for Fan Rotation
Off Fan in Normal Operation *1
SYS Green
Illuminated In Normal Operation
Off Operation Suspended
*2
*1 LED lamp should be off when the fan is not connected.
*2 There may be a case that this LED lamp is off even if there is an input ofAC power when
in parallel operation in low load as there is a case that only some of the power sources are
in operation. It should turn on when load increases and all the power source starts
working.
[7] Power Supply Terminals
Terminals to connect cables for AC power input, frame grounding and output voltage
Connector Names : D
T
-5C-B84W-6717-07 (DINKLE)
Pin Numbe
r
Signal Description
1 +24V
24V Output Terminals (Pin 1 and 2 are connected inside)
2 +24V
3 0V
0V Output Terminals (Pin 3 and 4 are connected inside)
4 0V
5 FG
Frame Grounding Terminal (grounding terminal connected to
the body of power source)*1
6 AC (N) AC Input Neutral Terminal (on grounding)
7 AC (L) AC Input Live Terminal (on non-grounding)
*1 “ ” means functional grounding terminals.
* Recommended cable size : From AWG14 to 18

Output Voltage
This power supply is able to be used in a parallel operation, and the output voltage
fluctuates within the range of 24V±10% even in a normal operation.
The voltage is set to around 25.5V at no duty. This voltage fluctuation does not
influence the operation of IAI 24V controller at all.
Output Current
It should be available to have the peak current output only when it satisfies the
following conditions.
●The duty cycle of the peak current should be 30%.
D ≤0.3
●The communication time of the peak current should be 10 seconds or less.
ｔ ≤10 [sec]
●The average current should be Ｉ
0 or less which is the continuous rated current
determined by the output derating.
Ｉ
p
= Peak Current
Ｉ
m
= Minimum Current
D= Duty Cycle, t/T
T= Peak Current Pulse Band
T= Frequency
Ｉ
0 = Rated Current Determined in Output
Derating Graph
Protective Functions
(1) Over Current Protection Circuit
The voltage suddenly drops when the current more than the peak maximum current output
is output (includes short circuit). Power output automatically recovers when the over
current condition is cancelled.
There is a case that the over current protection circuit works due to the in-rush current
caused by turning on multiple controllers at the same time.
Described above is concerned as the cause of the phenomenon of sudden voltage drop
occurring when turning on each actuator controller, emergency stop being cancelled, and
so on.
(What happens as the influence of the voltage drop is that it takes comparatively long time
at the start-up of the controllers or canceling the emergency stop.)
In the case this is occurred, it is necessary to boost the controllers one by one, or add
another power supply.
(2) Over Voltage Protection Circuit
The over voltage protection circuit works when the output voltage rises abnormally high.
If the voltage continues to rise, it shuts down the output. To recover, shut down the input
power first, leave it for approximately 2 minutes, and then input the power again.
When the over voltage protection works, internal devices may break. If output does not
work properly even though trying to turn on the power several times, it may require a
repair.
(3) Over Temperature Protection Circuit
The over temperature protection circuit detects an abnormal rise of the ambient
temperature and internal temperature, and shuts down the output.
To recover, shut down the input power first, leave it for a while till it cools down, and then
input the power again. If the over temperature protection works often, lower the ambient
temperature and the duty ratio.
(4) Over Load Detection
The threshold for the current approximately 8.7A should be as shown below with and
without fan.
For PSA-24 : Approx. 9.8A
For PSA-24L : Approx. 14.2A
(5) Input Low Voltage Protective Function
The input low voltage protection circuit starts working when the input voltage gets lower
than the specified range.
The output voltage should be shut off when the input voltage gets lower than 82V AC. The
operation comes back normal if the input voltage gets more than 82V AC.
(6) Fan Rotation Drop Function
A warning and error should be notified when the rotation of the fan gets low in PSA-24L.
Warning : Notification by warning bit with LED lamp flashing and communication when
70% or lower continues for 15 seconds or more
Error : Notification by error bit with LED lamp flashing and communication when 50%
or lower continues for 15 seconds or more
also, when an error is detected due to drop of the fan rotation, as there is a concern of
remarkable drop of the production life because of abnormal overheat, the threshold for
overload detection inside should be compulsorily switched to the setting for PSA-24
(natural cooling), and continuous operation at 330W should become unavailable. It should
be recovered after shutting down the power, replace the fan and reboot the AC power.
Caution: Use of the product in a way that is not stated in the first step guide or the
instruction manual should lose the protection performance which the product
possesses.
Simple Troubleshooting
Contents Treatment
Voltage does not output
• Is the connected input voltage within the specification?
• Any short circuit or grounding fault on the output circuit?
• Time delay too short after over voltage or over temp
protection activated.
• Did you turn on the power supply units at the same time for
parallel operation?
• Did you check that the ambient temperature is not high?
• Is the load too big?
Output voltage is low. • Is the load too big?
Manual No.: ME0380-2A