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| Article number 3BSE020848R11 Communication protocol Modulebus Master or slave N/A Line redundancy Yes Hot Swap No Type Redundant TB840/TB840A | |
|---|---|
| Single I/O | |
| Single Power Power input 24 V d.c (19.2 - 30 V) Mounting Vertical or Horizontal Detailed data 24 V consumption typ. N/A ModuleBus current distribution Maximum 5 V 1.5 A 24 V 1.5 A Mechanical Keys 36 different combinations Acceptable wire sizes Solid | 0.2 - 2.5 mm² Stranded |
| 24 -12 AWG Recomended torque | 0.5 Nm Rated insulation voltage 50 V Dialectic test voltage 500 V a.c Power dissipation 2.0 W Environment and certification CE- marking Yes Electrical Safety EN 61010-1 |
| UL 61010-1 | |
| EN 61010-2-201 | |
| UL 61010-2-201 Hazardous location cULus Hazardous Location Class 1 Zone 2 | |
| ATEX Zone 2 Marine certificates ABS | |
| BV | |
| DNV-GL | |
| LR Temperature | |
| Operating 0 to +55 °C (+32 to +131 °F) | |
| approvals are issued for +5 to +55 °C Temperature | |
| Storage -40 to +70 °C (-40 to +158° F) Relative humidity 5 to 95 % | |
| non-condensing Max ambient temperature 55 °C (131 °F) | |
| for vertical mounting 40 °C (104 °F) Equipment class Class l according to IEC 60536; (earth protected) Ingress protection IP20 according to IEC 60529 RoHS compliance DIRECTIVE/2011/65/EU (EN 50581 | 2012) WEEE compliance DIRECTIVE/2012/19/EU Dimensions Width 124 mm (4.88 in.) Height 186 mm (7.32 in.) including latch Depth 47 mm (1.85 in.) Weight 0.45 kg (0.99 lbs.) |
The TU841 is a module termination unit (MTU) for redundant configuration of Optical ModuleBus Modem TB840/TB840A, for use with non-redundant I/O. The MTU is a passive unit having connections for power supply, a single electrical ModuleBus, two TB840/TB840A and a rotary switch for cluster address (1 to 7) setting. Four mechanical keys, two for each position, are used to configured the MTU for the right types of modules. Each key has six positions, which gives a total number of 36 different configurations. The configurations can be changed with a screwdriver. Termination Unit TU840 connects TB840/TB840A to redundant I/O. Termination Unit TU841 connects TB840/TB840A to non-redundant I/O.
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