ABB S800 I/O Modules and Termination Units

for mounting on a vertical DIN rail. There is space on the MTU for two I/O modules

connected to separate ModuleBuses.

TU844 Redundant Horizontal MTU for 50 V Applications

The TU844 is a 8 channel redundant module termination unit. The TU844 has two

rows of terminals for field signals and process power connection. It is a intended for

mounting on a horizontal DIN rail. The MTU has place for 8 replaceable shunt

sticks (i.e one shunt stick per channel) for conversion of the input current signal to a

voltage signal. There is space on the MTU for two I/O modules connected to

separate ModuleBuses.

TU845 Redundant Vertical MTU for 50 V Applications

The TU845 is a 8 channel redundant module termination unit. The TU845 has three

rows of terminals for field signals and process power connection. It is intended for

mounting on a vertical DIN rail. The MTU has place for 8 replaceable shunt sticks

(i.e one shunt stick per channel) for conversion of the input current signal to a

voltage signal. There is space on the MTU for two I/O modules connected to

separate ModuleBuses.

TU850 Extended MTU, Individually Current Limited and Disconnectable per Channel for 50 V Applications

The TU850 is a 16 channel extended module termination unit. TU850 has two rows

of terminals for field signals and process power connection. Each channel has one

current limited sensor/transmitter power outlet terminal and one signal terminal.

Process voltage can be connected to two individually isolated groups.

TU851 Extended MTU for 250 Volt Applications

The TU851 250V Extended MTU Which allows a maximum of 16 isolated I/O

channels and process voltage connections. It has a 32 pole screw-terminal for

process connections.

TU852 Redundant Horizontal MTU for 50 V Applications

The TU852 is a redundant module termination unit for up to 16 channels. The

TU852 has a two 25 pin D-Sub connector for field signals and process power

connections. It is a intended for mounting on a horizontal DIN rail. There is space

on the MTU for two I/O modules connected to separate Modulebuses.

TU854 Redundant Horizontal MTU for 50 V Applications

he TU854 is a 8 channel redundant module termination unit. The TU854 has a 25

pin D-Sub connector for field signals and process power connections. It is a

intended for mounting on a horizontal DIN rail. The MTU has place for 8

replaceable shunt sticks (i.e one shunt stick per channel) for conversion of the input

current signal to a voltage signal. There is space on the MTU for two I/O modules

connected to separate ModuleBuses.

TY801 Shunt Stick

The TY801 is a shunt stick for current or voltage signals together with AI845 or

AI880 and TU844 or TU845.

TY804 Shunt Stick

The TY804 is a shunt stick for NAMUR signals together with DP840 and TU844 or

TU845.

TY820 Temperature Sensor

The TY820 can be used with AI835/AI835A and AI843 to measure cold junction

temperature.

S800 I/O Modules

The I/O modules have open ventilated plastic enclosures. On the front of all I/O

modules there are at least three LEDs (FAULT, RUN and WARNING) indicating

the module status. Additionally some modules have LEDs indicating OSP or

PRIMARY, see Table 3 and Table 4.

I/O modules may be replaced in a fully operational I/O station. Mechanical keying

on modules and MTUs protect I/O modules from being inserted in positions where

they could be damaged by excessive voltage or current. An electronic type

designation ID in each module keeps the I/O module from being taken into

operation by the ModuleBus master, if a module’s ID doesn’t match the configured

module type definition. There are modules for both single and redundant

applications.

Refer to specifications in Appendix A, Specifications for more information.

AI810 Analog Input Module, 0...20 mA, 0...10 V

The AI810 Analog Input Module has 8 current and voltage inputs. The inputs are

independent for each channel, in that either voltage or current can be measured.

The current input is able to handle a short circuit to the transmitter supply without

damage. The input withstand HART communication.

Nominal input ranges are: 0(4)... +20 mA, 0(2)... +10 V.

AI815 Analog Input Module, 0..20mA, 0..5V, HART

The AI815 Analog Input Module has 8 analog inputs. The inputs can be configured