IAI PS241, Instruction Manual, Page: 34 / 40

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Appendix 2
Appendix 2
Determination for Number of Connectable Units
Having the following calculation formulas for the current amperage [Calculation Formula
for Rated Current and Peak Current] and [Necessary Number of Power Supply Units] as a
reference, determine the number of units considering that the rated current and the peak
current of the load fall into the allowable range of the power source.
Ÿ
For how to calculate the supply current of MCON, refer to “1.3 Calculation of Current
Amperage” in MCON Instruction Manual.
Ÿ
For how to calculate the supply current of MSEP, refer to “1.3 Calculation of Current
Amperage” in MSEP Instruction Manual.
Ÿ
For how to calculate the current amperage for RCP6S Gateway System, refer to “1.3
Calculation for Connectable Number of Axes and Calculation for Current Amperage” in
RCP6S Fieldbus Communication Instruction Manual.
There is the RDY display to detect the duty ratio on the power supply.
In case the following phenomenons occurred in the actual operation, operation should be
available by having some more power sources joined in parallel connection.
Ÿ
RDY display turns OFF [Refer to 2], or
Ÿ
Overcurrent protection circuit works [Refer to 9. (1)]
How to Calculate Power Supply Capacity
[Calculation Formula for Rated Current and Peak Current]
Refer to tables from Table: 1-1 to Table: 1-7 in Appendix 1 for the rated current and maximum
current for each actuator.
1. Models with No Description of Rated Current
All Rated Current [A] = Max. current for each actuator [A] × Number of actuator units
+ Control supply current for each controller [A] × Number of
controller units
2. Models with Rated Current Described
All Rated Current [A] = Max. current for each actuator [A] × Number of actuator units
+ Control supply current for each controller [A] × Number of
controller units
All Peak Current [A] = Max. current for each actuator [A] × Number of actuator units
operated simultan Control supply current for each controller [A]
× Number of controller units
(Note) For the controllers that include the control supply current in “Current Amperage”
shown in the tables from Table:1-1 to Table: 1-7, it is not necessary to add the
control supply current for the controller.
(Note) If the controller is the fieldbus type, it is necessary to add amperage for 0.3A
×
number of controller units.