CJ1 SYSTEM POWER AND EXPANSION Power and Expansion Selection This section provides tools to calculate the CJ1 system current consumption total needed to select the power supply. When the number of modules or power requirements exceeds the capability of the power supplies available, I/O expansion racks solve the problem. If the number of modules per rack exceeds 10 or the current consumption is greater than the capacity of the power supply units, use the CPU and expansion rack configuration. What is the basic configuration A CJ1 system consists of a power supply, a CPU, and up to 10 basic I/O, special I/O and CPU bus units, and an end cover. See page B-109. What goes on expansion I/O racks The expansion I/O rack contains a power supply, an I/O interface module and the remaining I/O modules. Each expansion rack requires a power supply, the I/O interface module and up to 10 more modules. Where are ratings to calculate overall current consumption All the current consumption ratings for the CPU, basic I/O, special I/O and CPU bus units are collected in the tables on pages B-110 to B-111. Which power supply is right Compare the current consumption total of basic I/O, special I/O, and CPU bus units to determine which power supply to use. Input Voltage 100 to 240 VAC 24 VDC Output rating 5 A, 5 VDC with 2 A RUN output 2.8 A, 5 VDC 5 A, 5 VDC Output capacity 25 W max. 14 W max. 25 W max. Power supply model CJ1W-PA205R CJ1W-PA202 CJ1W-PD025 See page B-110 B-110 B-110 Note: If more than 10 modules are required or the current consumption exceeds the output capacity of the power supplies, go to page B-109 for configuration of I/O expansion racks. The same power supply units can be used for both CPU and I/O expansion racks. How many expansion I/O racks can be used Depending on the CPU chosen, the system can be expanded with up to three additional racks of basic I/O, special I/O and CPU bus units. 40 20 Maximum I/O modules 30 10 10 per CPU Maximum I/O expansion 3 1 2 0 0 racks per CPU CJ1G-CPU44H CJ1M-CPU13 CPU models CJ1G-CPU42H CJ1M-CPU12 CJ1M-CPU11 CJ1G-CPU45H CJ1M-CPU23 CJ1G-CPU43H CJ1M-CPU22 CJ1M-CPU21 CJ1H-CPU65H CJ1H-CPU66H Note: Order one CJ1W-IC101 I/O control module for the CPU rack and one CJ1W-II101 I/O interface module for each I/O expansion rack. Connect the modules with a cable of the appropriate length. Second and third I/O expansion racks connect between I/O interface modules. See page B-117 for details. B-108SystemPowerandExpansion System Configuration J BasicConfiguration A CJ1 Series basic configurationconsistsof a CPU, Power Supply Unit, Basic I/O Modules,Special I/O Modules,CPU Bus Modules,and an End Cover. Add up the current consumptionof all the modulesand the CPU according to the formula on the following pageand then selectthe Power Supply Unit right forthe application. ConfigurationModules BasicConfiguration (BasicI/OModules, Power SpecialI/OModules, Supply CPU BusModules) Unit CPU EndCover MemoryCard J CPUandExpansionRacks If the numberof modulesper rack exceeds10 or the current consumptionis greaterthan thecapacityof the PowerSupply Units, use theCPU and ExpansionRack configuration.This divides theload from themodules acrosstwo Power Supply Units. To ensure communicationand automaticchannelassignmentin programming,order an I/O Control Module for the CPU Rackand an I/O InterfaceModule on eachExpansionRack. ConfigurationModules CPU Rack (BasicI/OModules, Power SpecialI/OModules, Supply CPU BusModules) I/OControlModule Unit CPU EndCover MemoryCard ConfigurationModules ExpansionRack (BasicI/OModules, (Upto3Expansion Power SpecialI/OModules, RacksAllowed) Supply CPUBusModules) Unit I/OInterfaceModule EndCover I/OConnectingCable B-109 ProgrammableControllerCJ1