1. General Introduction
The TU846 is a module termination unit (MTU) for redundant configuration of the field communication interface CI840/CI840A and redundant I/O. The MTU is a passive unit having connections for power supply, two electrical Module Buses, two CI840/CI840A and two rotary switches for station address (0 to 99) settings.
A Module Bus Optical Port TB842 can be connected to TU846 via TB846. 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.
Module Termination Unit for dual CI840/CI840A, redundant I/O. TU846 are used with redundant I/O modules and TU847 with single I/O modules. The maximum Module Bus length from the TU846 to the Module Bus terminator is 2.5 meters. TU846/TU847 needs space to the left in order to be removed. Cannot be replaced with power applied.
2. Specification of TU846
General info | |
Type | PROFIBUS DP-V1 |
Article number | 3BSE022460R1 |
Master or slave | Not Applicable |
Line redundancy | Yes |
Module redundancy | Yes |
Hot Swap | No |
Type | Redundant CI840/CI840A, Redundant I/O |
Power input | 24 V d.c. (19.2 - 30 V) |
Mounting | Vertical or Horizontal |
Detailed data | |
Connector | PROFIBUS: DSUB9 connector Service ports: RJ45 connector |
Module Bus current distribution | Maximum 5V 1.5 A 24V 1.5 A |
Mechanical Keys | 36 different combinations |
Acceptable wire sizes | 0.25 - 2.5mm2, 24 - 14 AWG Recommended torque: 0.5 - 0.6 Nm Stripping length: 6-7.5 mm, 0.24-0.30 in |
Rated insulation voltage | 50 V |
Dialectic test voltage | 500 V a.c. |
Environmental and certification | |
Temperature, Operating | 55° C (131° F) horizontal mounted. 40° C (104° F) vertical mounted |
Temperature, Storage | -25° C (-13° F) to +70° C (158° F) |
Equipment class | Class I according to IEC 60536; (earth protected) |
Ingress protection | IP20 according to IEC 529, (IEC 144) |
CE- marking | Yes |
Electrical Safety | cULus |
Hazardous Location | cULus Hazardous Location Class 1 Zone 2, ATEX Zone 2 |
RoHS compliance | DIRECTIVE/2011/65/EU (EN 50581:2012) |
WEEE compliance | DIRECTIVE/2012/19/EU |
Dimensions | |
Width | 124 mm (4.88 in.) |
Depth | 47 mm (1.85 in.) |
Height | 186 mm (7.32 in.) including latch |
Weight (including base) | 0.5 kg (1.1 lbs.) |
3. Selection table of S800I/O Communication Modules
Name | Line redundancy | Master or slave | Module redundancy | Protocol |
CI801 | No | Slave | No | PROFIBUS DP-V1 |
CI840A | Yes | Slave | Yes | PROFIBUS DP-V1 |
CI845 | Yes | Slave | Yes | N/A |
TB820V2 | No | Slave | No | ABB's Module bus |
TB825(Multi Mode) | No | Slave | No | ABB's Module bus |
TB826(Single Mode) | No | Slave | No | ABB's Module bus |
TB840 | Yes | Slave | Yes | ABB's Module bus |
TB842 | Yes | Slave | Yes | ABB's Module bus |
TC810 | Yes | - | Yes | N/A |
TU807 | - | Not Applicable | - | ABB's Module bus |
TU840 | Yes | Not Applicable | Yes | ABB's Module bus |
TU841 | Yes | Not Applicable | ABB's Module bus | |
TU846 | Yes | Not Applicable | Yes | PROFIBUS DP-V1 |
TU847 | Not Applicable | Yes | PROFIBUS DP-V1 | |
TU848 | Yes | Not Applicable | Yes | ABB's Module bus |
TU849 | Yes | Not Applicable | - | ABB's Module bus |
TU860 | - | - | - | N/A |
