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S800 I/O – TU851

The TU851 MTU can have up to 16 I/O channels. The maximum rated voltage is 250 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

  • Up to 16 isolated channels of field signals.
  • 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.
Article number 3BSE068782R1
Type Extended
Connection Terminal block
Channels 16
Voltage 250 V
Mounting Both directions
Mounting detail 55 º (131 °F)
Use with I/O DI820, DI821, DI825, DI828, DO820, DO821, and DO828
Process connections 32 up to 16 I/O channels
Single/redundant I/O Single

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