UITerminal

The UITerminal is used to connect all universals inputs ( i.e. analog and digital inputs). The UI Terminal function block reads the directly wired switches and sensors (connected to the blue UIx terminals on the controller).

The counter indicates the total number of pulses (rising edge followed by falling edge is one pulse) on the UI terminal since the last reset of the controller due to power-up or reset. After power-up and reset, the Output value is equal to Null which indicates that previous count values have been lost. The counter starts with the first pulse (rising edge followed by falling edge is one pulse) with the value 0 and then it counts up to 2147483647. After that it overflows to the value 1 on the very next pulse input and counts up again as just described.

The Boolean Input In Reset resets the counter to Null, as long as it is set to TRUE. When Input : In Reset is set to FALSE, the counter starts counting as described above with the value 1.

Pulse input specification

Figure 1: Wiring Duiagram For SO Counter

Figure 2: UI Function Block

Figure 3: UI Terminal Property Sheet

Input

Input Name

Description

NA

NA

Table 2: Output of UITerminal Function

Output

Output Name

Description

Out

For Unused, Out = 0.

For the characteristic BinaryReverse

  • If resistance seen at input terminal is less than 10KOhm, Out is False
  • If resistance seen at input terminal is greater than 20KOhm, Out is True

For the characteristic BinaryDirect

  • If resistance seen at input terminal is less than 10KOhm, Out is True
  • If resistance seen at input terminal is greater than 20KOhm, Out is False

For the characteristic NTC10, NTC20, Pt1000, Ni1000TK5000, Out is -50-150°C or -58-302 °F.

  • In case of a sensor break (open), Out is +infinity
  • In case of sensor short, Out is -infinity

For the characteristic 0-10 Volt, Out = 0-100%.

For the characteristic 2-10V

  • Input voltage >= 2V and <=10V, Out = 0 - 100%
  • Input Voltage >=1.5V and < 2V, Out = 0%
  • Input Voltage < 1.5V ,Out = +infinity (sensor short condition on UI)

For the characteristic SetPt10kCharacteristics, Out = 0-100% from 0 Ohm to 10000 Ohm.

For the characteristic S0 Counter with external voltage or S0 Counter with dry contact, Out = Null, 1- 2147483647.

Table 2: Output of UITerminal Function

Parameter

Parameter Name

Description

Fault Cause

This field is read-only. Indicates the cause of the parameter's fault state. This property is empty unless a fault occurs. When multiple errors occur, the fault cause displays only the top errors on the list. If the error is resolved, the next error message will be displayed

Characteristic

Various characteristics can be selected as given below:

  • Unused
  • BinaryReverse
  • 0-10 Volt
  • 2-10 Volt
  • BinaryDirect
  • S0 Counter with external voltage
  • S0 Counter with dry contact
  • NTC10
  • NTC20
  • Pt1000
  • SetPt10kCharacteristics
  • Ni1000TK5000

*1 Not available on all controllers and all UIs

Pin

Displays a list of supported pins based on the configured controller.

P: Characteristic

This field is read-only. Display the configured characteristic.

Table 1: Parameter of UITerminal Function

Examples For UI  

Room Temperature.

Figure 4: UI1-HwAIRm Function Block and Property Sheet

Figure 5: UI8-HwRmCO2 Function Block and Property Sheet

Examples For BI (Occupancy Sensor)

Figure 6: HwBiCooSensor Function Block and Property Sheet

Window Contact

Figure 7: Ui5- HwBiWindow Function Block and Property Sheet

Examples for AO (Cooling valve Control)

Figure 8: AO1- HwAoClgo1level Function Block and Property Sheet

Fan Speed Control

Figure 9: AO4- HwAoFanSpeedCtl Function Block and Property Sheet

Relay Output

Figure 10: RO1- HwBoFanStg1Cmd Function Block and Property Sheet

TRIAC output

Figure 11: TO1- HwBoClg02PwmCmd Function Block and Property Sheet

Example for SO Counter with External Voltage

Figure 12: Example for SO Counter with External Voltage Function Block and Property Sheet

Example for SO Counter with Dry Contact

Figure 13: Example for SO Counter with Dry Contact Function Block and Property Sheet

Example: Connection of an external 0-10V or 2-10V sensor on UI1

When connecting a 0-10V sensor to the sensor input UI_1 of the controller, the 0-10V signal from the sensor is connected to the UI terminal and the common or neutral wire is connected to the GND terminal

With a large hardware version of the unitary MS/TP controller, the sensor can be connected to terminal 47-UI1 and 49-GND, with the small hardware version to terminal 34-UI1 and 35-GND.

On the onboard IO Wiresheet, 0-10Volt or 2-10Volt is selected at the UI terminal.

Figure 14: SO Counter with Dry Contact Function Block

Figure 15: SO Counter with External Voltage Property Sheet

This option instructs the controller to turn off the bias voltage internally. As a result, the UI terminal no longer receives voltage from the controller. The voltage from the external 0-10 V sensor is then received by the controller. For 0 - 10 V or 2 - 10 V, the function block returns a value of 0 - 100 %.

External 0 - 10 V sensors always require their own power supply, which is usually external.

Example: The large hardware version of the unitary MSTP controller outputs the 22 VAC voltage at terminals 5-24 V and 6-24 V. When using a 24 VAC controller, it is best to get the voltage directly from the transformer that also powers the controller.

Refer to General Description for general information about IRMN4 Function Blocks.