TU840 3BSE020846R1 module termination unit , China TU840 3BSE020846R1 module termination unit Manufacturers, Suppliers, Factory

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	TU840 3BSE020846R1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Parameter	Value
Type	Redundant TB840/TB840A, Redundant I/O, Single Power
Module	Termination Unit
Communication protocol	Modulebus
Master or slave	N/A
Line redundancy	Yes
Module redundancy	Yes
Hot Swap	No
Power input	24 V d.c (19.2 - 30 V)
Mounting	Vertical or Horizontal
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)
Connector	N/A
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: 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

Description

The TU840 3BSE020846R1 is a module termination unit (MTU) for redundant configuration of Optical ModuleBus Modem TB840/TB840A.

The MTU is a passive unit having connections for power supply, double electrical ModuleBus, two TU840 3BSE020846R1/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 3BSE020846R1 connects TU840 3BSE020846R1/TB840A to redundant I/O. Termination Unit TU841 connects TU840 3BSE020846R1/TB840A to non-redundant I/O.

Environment and certification

Parameter	Value
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 I according to IEC 60536 (earth protected)
Ingress protection	IP20 according to IEC 60529
RoHS compliance	EU RoHS, UAE RoHS, CN RoHS
WEEE compliance	DIRECTIVE/2012/19/EU

Applications

Oil refineries: Used for redundant communication in core production units to prevent production accidents caused by communication interruptions.

Coal power plants: Serves as the communication core of the generator unit's DCS system, ensuring real-time online control signals.

Offshore drilling farms: Provides double the link protection in harsh environments, responding to sudden failures caused by high salt spray at sea.

Fine chemical plants: Ensures high reliability of data acquisition and command issuance in continuous production lines.

Nuclear power plants: Used in the control cabinets of peripheral auxiliary systems with extremely high safety requirements.

Features and benefits

A rotary switch for cluster address setting

Mechanical keying prevents insertion of wrong module type

Double ModuleBus connection

Latching device to DIN rail for locking and grounding

DIN rail mounted

FAQ

Q: Does the TU840 3BSE020846R1 itself occupy a bus address?
A: No. TU840 3BSE020846R1 only provides physical and electrical connections; the logical address is determined by the communication module inserted into it.

Q: Can TU840 3BSE020846R1 accommodate non-redundant modules?
A: It is typically designed for redundant use, but physically a single communication module can be installed and operated (without redundancy).

Q: How many power inputs does TU840 3BSE020846R1 support?
A: TU840 3BSE020846R1 supports two independent 24V DC power inputs.

Q: Will a faulty TU840 3BSE020846R1 dock cause a complete system failure?
A: Yes. If the TU840 3BSE020846R1 hardware fails, communication across the entire S800 I/O cluster will be interrupted.

Q: What precautions should be taken when replacing the TU840 3BSE020846R1 dock?
A: A complete power-off is required, and because the entire I/O bus is involved, the cluster address and communication status must be re-verified after replacement.