T2550 Flexible I/O Modules

This analogue input module is used to monitor analogue signals from a wide range of plant sensors,  The mA and TC inputs each require the appropriate Thermal Unit.  The second channel of the A12 has a special high impedance range for use with the zirconia probe inputs.

No of channels: 2

Input types: TC, RTD, Volts, mA, mV, Potentiometer, Pyrometer, Zirconia probe

mV range: -150mV to +150mV at input impedance >100MΩ

mA range: -22mA to +22mA with 5Ω burden in the terminal unit

Volts range: -10.2V to +10.2V at input impedance 303kΩ

RTD support: Support for 2, 3 and 4 wire resistance thermometer devices

Ohms range: 0 to 600Ω 3- or 4-wire lead compensation

Hi Ohms range: 0 to 5kΩ 3- or 4-wire lead compensation

Pot range: 5% to 95% ‘rotation’ of 100Ω to 5kΩ pot.

Provides three isolated current input channels specifically designed to meet the requirements of modern two wire transmitters.

Each channel has its own isolated 24V supply for 3-wire transmitter excitation. Each channel is protected against short circuit (with 24V dc supply on) and utilises a sophisticated trip and try system where the module senses over current and cuts the power, after a period the circuit checks for continued circuit malfunction.

The module can be optionally fitted with disconnects to allow isolation of an individual input to allow work on the loop to continue safely.

No of channels: 3

Input range: -28mA to +28mA

This analogue input module is used to monitor analogue signals from a wide range of plant sensors. The mA and TC inputs each require the appropriate Terminal Unit.

No of channels: 4

Input types: TC, mV, mA, Pyrometer

mV range: -150 - +150mV at input impedance >100MΩ

mA range: -22 - +22mA with 5Ω burden in the terminal unit.

This analogue output module provides two isolated analogue output channels. 

Each output may be independently configured for current or voltage mode.  The module can be optionally fitted with disconnects to allow isolation of an individual output to allow work on the individual loop to continue safely.

No of channels: 2

Current output: -0.1 to 20.5mA; 10V dc maximum compliance

with total burden less than 500Ω

Voltage output: 0 to 10V dc; 20mA maximum compliance with

total load greater than 500ohms

-0.5 to 10.5 V dc; 20mA maximum compliance

with total load greater than 1500Ω

This digital input module accepts four logic inputs, and may be wired either for voltage input (either polarity) or for contact closure.

No of channels: 4

Input functions: On/Off, pulse and de-bounce.

This eight channel digital input module accepts eight logic inputs and is available in two factory option formats for voltage or contact

closure input.

No of channels: 8

Input functions:

On/Off.

pulse

de-bounce inputs with input invert

The six channel digital input module accepts AC voltage inputs and is available in two factory options optimized for 115V ac or 230V ac ranges.

No of channels: 6

Input functions: On/Off or de-bounce

Frequency: 47Hz-63Hz

This digital output module provides four logic outputs and is available in two factory option formats for standard or high-current output.

No of channels: 4

Logic Variant

Voltage supply: 18 <Vs <30V dc

Output current: >8mA high drive per channel (Current limited)

Output Voltage: At least Voltage supply (Vs) -3V switch drop

24  Variant

External supply: 12 <Vs <30V dc

Output current: 100mA maximum high drive per channel

(Current & Temperature limited)

Output voltage: At least Voltage supply (Vs) -3V switch drop

The DO8 provides higher packing density and lower cost per channel. 

The eight digital output module provides eight logic outputs, which are typically used for control, alarms or events outputs. 

Each channel has a 24V output with 0.75A capability (subject to a maximum of 4A total per module) and can be used for driving solenoids, relays, lamps, fans, thyristor units, single phase Solid State Relays (SSRs) or some three phase SSRs.

Voltage supply (external): 18-30V dc to plant devices Vs

This digital output module provides four relay outputs.

The relay contacts are all fitted with removable snubber circuits to reduce contact arcing and prolong contact life.

No of channels: 4 (3 normally open + 1 changeover)

Max current rating: 2A at up to 240V ac; 0.5A at 200V dc,

increasing to 2A at 50V dc (resistive)

Provides two isolated frequency input channels and selectable voltage output for loop or wetting current or sensor supply. Each input channel may be independently configured for magnetic, voltage, current or contact sensor types.

No of channels: 2

Frequency measurements

Range:

Logic: 0.01Hz-40KHz, debounce off

Magnetic: 10Hz-40KHz

Pulse counting

Range:

Logic: dc-40KHZ, debounce off

Magnetic: 10Hz-40KHz

Magnetic sensor input specification

Input range: 10mV-80V p-p

Logic input specification

VOLTAGE Input range: 0-20V

Input Types: Analogue voltage, Channel 1 - mV (TC), and Channel 2 - 2V (Zirconia probe)

Thermocouple Input Specification (Ch1 ONLY)

Input Range: -77mV to +100mV

Zirconia Input Specification (Ch2 ONLY)

Input Range: -10mV to +1800mV