Product Description
Product Specifications: TU840 MTU
Description
The TU840 is a Module Termination Unit (MTU) designed for redundant configurations of Optical ModuleBus Modem TB840/TB840A. It serves as a passive unit with connections for power supply, dual electrical ModuleBus, two TB840/TB840A units, and a rotary switch for cluster address settings (1 to 7). Four mechanical keys are provided for each position, ensuring proper module configuration. Each key has six positions, enabling a total of 36 unique configurations that can be adjusted with a screwdriver. The TU840 connects TB840/TB840A to redundant I/O, while the TU841 serves non-redundant I/O setups.
Features and Benefits
- Rotary switch for cluster address settings.
- Mechanical keying prevents incorrect module insertion.
- Double ModuleBus connection for redundancy.
- Latching device for secure DIN rail mounting and grounding.
- Supports both vertical and horizontal mounting.
General Information
- Article Number: 3BSE020846R1
- Communication Protocol: ModuleBus
- Master or Slave: N/A
- Line Redundancy: Yes
- Module Redundancy: Yes
- Hot Swap: No
- Type: Redundant TB840/TB840A, Redundant I/O, Single Power
- Power Input: 24 V d.c (19.2 - 30 V)
- Mounting: Vertical or Horizontal
Detailed Data
-
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: 0.2 - 2.5 mm² (24 - 12 AWG)
- Recommended Torque: 0.5 Nm
- Rated Insulation Voltage: 50 V
- Dielectric Test Voltage: 500 V a.c
- Power Dissipation: 2.0 W
Environment and Certification
| Category | Details |
|---|---|
| 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 Certification | ABS, BV, DNV-GL, LR |
| Operating Temperature | 0 to +55 °C (+32 to +131 °F) (approvals issued for +5 to +55 °C) |
| Storage Temperature | -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 I according to IEC 60536 (earth protected) |
| Ingress Protection | IP20 (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.)