Technical specificationProduct Specification IRB 4400 M98A/BaseWare OS 3.2 473.10 Inputs and OutputsTypes of connectionThe following types of connection are available:- “Screw terminals” on the I/O units.- Serial interface for distributed I/O units.- Air and signal connections to upper arm.For more detailed information, see Chapter 4: Specification of Variants and Options.I/O unitsSeveral I/O units can be used. The following table shows the maximum number ofphysical signals that can be used on each unit.Distributed I/OThe total number of logical signals is 512 (inputs or outputs, group I/O, analog anddigital including field buses)Max. total no of units* 20 (including SIM units)Max. total cable length 100 mCable type (not included) According to DeviceNet specification release 1.2Data rate (fixed) 500 Kbit/s* Max. four units can be mounted inside the cabinet.Type of unit Option no.Digital AnalogPower supplyIn Out VoltageinputsVoltageoutputCurrentoutputDigital I/O 24 VDC 20x 16 16 Internal/External 11. The digital signals are supplied in groups, each group having 8 inputs or outputs.Digital I/O 120 VAC 25x 16 16 Internal/ExternalAnalog I/O 22x 4 3 1 InternalAD Combi I/O 23x 16 16 2 Internal/External 1Relay I/O 26x 16 16 Internal/External 1Allen-BradleyRemote I/O Slave 281 128 22. To calculate the number of logical signals, add 2 status signals for RIO unit and 1 for Interbus-Sand Profibus DP.128Interbus-S Slave 284-285 642 64Profibus DP Slave 286-287 1282 128Simulated I/O 33. A non physical I/O unit can be used to form cross connections and logical conditions withoutphysical wiring. No. of signals are to be configured. Some ProcessWares include SIM unit.100 100 30 30Encoder interfaceunit 44. Dedicated for conveyor tracking only.288-289 1