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DC24V Power Supply for IAI Actuatorsps24 power supply

- Maximum Momentary Output of 17A -
Up to 17A of maximum momentary output current is possible at 8.5A rated output current.

- Parallel Operation Enabled -
Up to 5 unites can be operated in parallel.

- Load Detection Function -
Load percentage can be detected by the RDY (Ready) display lamp.


Download the PS-24 Power Supply PDF


Features

Maximum Momentary Output of 17A

While the rated output current is 8.5A, maximum momentary output current of up to 17A is supported. This lets you select an appropriate power-supply capacity based on the total rated current of actuators, without having to consider the maximum momentary current that may be generated by the actuator during acceleration.

Because you no longer need to use an expensive high-capacity power supply, cost can be reduced substantially.

* The maximum momentary output current must be considered if the actuator operating conditions are tight. For details, refer to "Selection Guide" on the right.



Supporting Parallel Operation


Up to five units can be operated in parallel. Even if any one unit is found short of power-supply capacity, all you need is to simply add one more unit without replacing the unit in question with a larger-capacity model.





Load Detection Function


The load factor can be detected using the RDY (ready) indicator lamp and RDY output signal.









Selection Guide: Number of Actuators Connected

When selecting a power-supply unit for operating multiple actuators, normally a unit with a capacity equal to or exceeding the total maximum current of all actuators is chosen. However, actuators generate their maximum current only momentarily during acceleration, etc., and in many cases the power-supply is over-specified. On the other hand, the PS-24 power supply provides the following advantages:

  1. Supporting maximum momentary current of up to twice the rated current
  2. If you need more power-supply capacity, you can simply add an extra unit or units. The above features let you select an optimal power-supply capacity.


Number of Power-supply Units

Basically, how many power-supply units you need should be determined in such a way that the total rated current of all actuators will remain within the rated current of the PS-24.
If the load condition is tight, however, the power-supply capacity may still become inadequate. In such cases, add an extra power supply or supplies.



Examples of Tight Load Condition

  • Large load (close to the rated load capacity of the actuator)
  • High acceleration/deceleration
  • High speed
  • Simultaneous operation of multiple axes
  • Use of the RB75 series (Structurally these actuators allow maximum current to flow for a longer period.)

Table 1. Rated Current of PS-24 and Allowable Maximum Momentary Current

Number of Connected Units Rated Current [A] Maximum Momentary Current [A]
1 unit
8.5
17
2 units
15.3
30.6
3 units
22.95
45.9
4 units
30.6
61.2
5 units
38.25
76.5

(Note) Consider a safety factor (loss) of 10% for the second and subsequent units.

Table 1. Relationship of Actuator and Power-Supply Current

Controller Type
Actuator Type
Power Supply Current [A]
Number of connected axes per PS-24 (reference) *1
ERC2
ERC2
Rating (=Max)
2A
8
PCON/PSEL
All RCP2 Models
ACON/ASEL
SA4, SA5 (20W)
Rating
1.3A
6
Max.
3.7A
SA6 (30W)
Rating
1.3A
6
Max.
4.2A
RA3 (20W)
Rating
1.7A
5
Max.
5A
RA4 (20W)
Rating
1.3A
6
Max.
3.7A
RA4 (30W)
Rating
1.3A
6
Max.
4.2A

*1 The figures under "Number of connected axes per PS-24 (reference)" are calculated based on the assumption of "Rated current of axis x Number of axes [Rated current of PS-24 (8.5A)" [or "Rated current of axis x Number of axes [Maximum momentary current of PS-24 (17A) for ERC2 and RCP2].

Part Descriptions
IAI Power Supply for Industrial Automation Robots

  1. Ready indicator (RDY)
  2. Overload-detection level setting dial (LF.DET) *This dial has been set to an appropriate value prior to shipment.
  3. Ready output signal (RDYOUT)
  4. +24-V output terminals (+24V) (4 and 5 are connected internally)
  5. +24-V output terminals (+24V) (4 and 5 are connected internally)
  6. 0-V output terminals (0V) (6 and 7 are connected internally)
  7. 0-V output terminals (0V) (6 and 7 are connected internally)
  8. Frame ground terminal (FG) A ground terminal
  9. AC input terminal (AC(N))
  10. AC (100-VAC) input terminal (AC100(L))
  11. AC (200-VAC) input terminal (AC200(L))



*Connect the power source between 9 and 10 for a 100-VAC input specification, or between 9 and 11 for a 200-VAC specification. The terminals are not common between the two power input specifications.

Specification Table
Item
PS-241
PS-242
Rated DC Output Voltage
24V ± 10% (Varies depending on the load)
Rated DC Output Current
8.5A
Maximum Momentary DC Output Current
17A
Rated Output Capacity
204W
Efficiency
80%
80%
Rated Input Voltage (Frequency)
AC 100~115V (50/60Hz)
AC 200~230V (50/60Hz)
Input Voltage Range
AC 85~125V
AC 170~250V
Input Current
3.5A (100VAC, full load)
1.8A (200VAC, full load)
Output Retention Time
20 [msec] (at ambient temperature of 25C and rated input/output conditions)
Protective Circuit
Over current protection, over voltage protection, overheat protection, overload protection
Parallel Operation
Supported
Ambient Operating Temp
0~50C (subject to de rating)
Ambient Operating Humidity
30~85% RH (non-condensing)
Cooling Method
Natural Air Cooling
Breakdown Voltage

Between input an output - 2.0kVA, 1 min (20mA)

Between input and enclosure - 2.0kVA, 1 min (20mA)

Insulation Resistance
Between output and enclosure - 100M? min. at 500VDC
Circuit Method
Externally Excited Fly-Back Converter
Weight
Approx 0.9kg

Go to:
ROBO Cylinder Visual Index for Electric Linear Actuators and Robotic Automation

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