• AI801
  • AI810
  • AI815
  • AI820
  • AI825
  • AI830A
  • AI835A
  • AI843
  • AI845
  • AI880A
  • AI890
  • AI893
  • AI895
  • AO801
  • AO810V2
  • AO815
  • AO820
  • AO845A
  • AO890
  • AO895
  • BC810K02
  • BC820K02
  • CI801
  • CI840A
  • CI853 (Comli)
  • CI853 (MODBUS RTU)
  • CI854A/CI854B
  • CI855
  • CI856
  • CI857
  • CI858
  • CI860
  • CI862
  • CI865
  • CI867
  • CI868
  • CI869
  • CI871
  • CI873
  • DI801
  • DI802
  • DI803
  • DI810
  • DI811
  • DI814
  • DI818
  • DI820
  • DI821
  • DI825
  • DI828
  • DI830
  • DI831
  • DI840
  • DI880
  • DI885
  • DI890
  • DO801
  • DO802
  • DO810
  • DO814
  • DO815
  • DO818
  • DO820
  • DO821
  • DO828
  • DO840
  • DO880
  • DO890
  • DP820
  • DP840
  • GHS Mains Breaker kit
  • NE801
  • NE802
  • NE810
  • NE820
  • NE840
  • NE870
  • NE871
  • PM851A
  • PM856A
  • PM858
  • PM858K02
  • PM860A
  • PM861A
  • PM861AK02
  • PM862
  • PM862K02
  • PM864A
  • PM864AK02
  • PM865
  • PM865K02
  • PM866A
  • PM866AK02
  • PM867
  • PM867K02
  • PM891
  • PM891K02
  • PP871
  • PP874
  • PP874K
  • PP874M
  • PP877
  • PP877K
  • PP880R
  • PP882
  • PP885
  • PP885H
  • PP885M
  • PP885R
  • PP886H
  • SD822Z
  • SD831
  • SD832
  • SD833
  • SD834
  • SM811 (for PM865)
  • SM812 (for PM867)
  • SS822Z
  • SS823
  • SS832
  • TB820V2
  • TB825 (Multi Mode)
  • TB826 (Single Mode)
  • TB840A
  • TB842
  • TU807
  • TU810V1
  • TU811V1
  • TU812V1
  • TU813
  • TU814V1
  • TU818
  • TU819
  • TU830V1
  • TU831V1
  • TU833
  • TU834
  • TU835V1
  • TU836V1
  • TU837V1
  • TU838
  • TU839
  • TU840
  • TU841
  • TU842
  • TU843
  • TU844
  • TU845
  • TU846
  • TU847
  • TU848
  • TU849
  • TU850
  • TU851
  • TU852
  • TU854
  • TU890
  • TU891
System Configuration

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TU838

The TU838 MTU can have up to 16 I/O channels. The maximum rated voltage is 50 V and maximum rated current is 3 A per channel.
The MTU distributes the ModuleBus to the I/O module and to the next MTU. It also generates the correct address to the I/O module by shifting the outgoing position signals to the next MTU.

The MTU can be mounted on a standard DIN rail. It has a mechanical latch that locks the MTU to the DIN rail.

Two mechanical keys are used to configure the MTU for different types of I/O modules. This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module. Each key has six positions, which gives a total number of 36 different configurations.

Features and benefits

  • Complete installation of I/O modules using 3-wire connections, fuses and field power distribution.
  • Up to 16 channels of field signals and 8 process power connections.
  • Two channels share one fused transducer power terminal.
  • Process voltage can be connected to 2 individually isolated groups, if the I/O module supports it.
  • Connections to ModuleBus and I/O modules.
  • Mechanical keying prevents insertion of the wrong I/O module.
  • Latching device to DIN rail for grounding.
  • DIN rail mounting.