TU843 3BSE021443R1 Module Termination Unit, China TU843 3BSE021443R1 Module Termination Unit Manufacturers, Suppliers, Factory

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	TU843 3BSE021443R1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Parameter	Value
Model	TU843 3BSE021443R1
Dimensions	18.5 x 13 x 6.5 cm
Weight	0.62 kg
Type	Redundant
Connection	Terminal block
Channels	16
Voltage	50 V
Mounting	Vertical
Mounting detail	55 º (131 °F)
Compatible I/O	AI843, AO845, AO845A, DI840, DI880, DO840, DO880, DP840
Process connections	56 up to 16 I/O channels (2 terminals per channel), 4 Process power, 20 Process power (0 V)
Single/redundant I/O	Redundant
Max current per I/O channel	3 A
Max current process connection	10 A
Acceptable wire sizes	Solid: 0.2 - 4 mm²; Stranded: 0.2 - 2.5 mm², 24 - 12 AWG
Recommended torque	0.5 - 0.6 Nm
Stripping length	7 mm
Dielectric test voltage	500 V a.c.

Description

The TU843 3BSE021443R1 MTU can have up to 16 I/O channels and 2+2 process voltage connections. Each channel has two I/O connections and one ZP connection. The maximum rated voltage is 50 V and maximum rated current is 3 A per channel.

The MTU distributes the two ModuleBuses, one to each the I/O module and to the next MTU. It also generates the correct address to the I/O modules 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.

Four mechanical keys, two for each module, 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.

Environment and certification

Parameter	Value
CE mark	Yes
Electrical safety	EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
Hazardous Location	C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2
Marine certification	-
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)
Pollution degree	Degree 2, IEC 60664-1
Corrosion protection	ISA-S71.04: G3
Relative humidity	5 to 95 %, non-condensing
Max ambient temperature	55 °C (131 °F)
Protection class	IP20 according to IEC 60529
Mechanical operating conditions	IEC/EN 61131-2
EMC	EN 61000-6-4, EN 61000-6-2
Overvoltage categories	IEC/EN 60664-1, EN 50178
Equipment class	Class I according to IEC 61140 (earth protected)
RoHS compliance	EN 50581:2012
WEEE compliance	DIRECTIVE/2012/19/EU
CE mark	Yes

Applications

Chemical plants: Redundant acquisition of critical analog signals such as temperature and pressure in reactors.

Refineries: Liquid level monitoring during oil and gas storage and transportation to prevent system shutdowns due to single-point failures.

Coal power plants: Analog signal detection for turbine auxiliary systems to ensure stable power output.

Pharmaceutical plants: Precise and continuous monitoring of fermentation environmental parameters to ensure product consistency.

Paper mills: Wiring for closed-loop control systems of pulp concentration and flow rate.

Features and benefits

Complete installation of I/O modules using 3-wire connections and field power distribution.

Up to 16 channels of field signals and process power connections.

Connections to two ModuleBuses and I/O modules.

Mechanical keying prevents insertion of the wrong I/O module.

Latching device to DIN rail for grounding.

DIN rail mounting.

FAQ

Q: What are the main differences between the TU843 3BSE021443R1 and TU842?
A: The TU843 3BSE021443R1 is primarily designed for 8-channel differential signals (such as AI845), while TU842 is typically used for 16-channel single-ended signals. The wiring definitions are different.

Q: Can modules on the TU843 3BSE021443R1 be replaced while the system is running (powered on)?
A: Yes, it supports hot-swapping. In redundant configurations, removing one module will not interrupt the process flow.

Q: What is the protection performance of the TU843 3BSE021443R1 in harsh factory environments?
A: It is IP20 rated. In dusty or highly corrosive environments, it must be installed in a G3-rated sealed electrical cabinet.

Q: Why can't the module be inserted into the TU843 3BSE021443R1 base?
A: Please check if the mechanical key position on the base has been correctly adjusted according to the module model. Forcing insertion will damage the pins.

Q: Does the TU843 3BSE021443R1 support 3-wire transmitter power supply?
A: Yes, the TU843 3BSE021443R1 provides terminals for distributing process power, allowing direct power supply to field instruments.