# Inputs and Outputs

## [data-colorid=xy2u5pnw8s]{color:#091e42} html[data-color-mode=dark] [data-colorid=xy2u5pnw8s]{color:#bdd2f6}Local I/O

The multiprotocol I/O modules are equipped with local inputs and outputs (universal inputs, digital inputs, analog outputs, digital outputs, and triac outputs), and their quantities differ between the modules types, according to the table:

Module Type

UI

DI

AO

DO

TO

4I4O-H

4

4

4I4O-H-IP

4

4

4O-H

4 (NC/NO-8A)

4O-H-IP

4 (NC/NO-8A)

4U4A-H

4

4

4U4A-H-IP

4

4

4U4O-H

4

4

4U4O-H-IP

4

4

8I

8

8I-IP

8

8U

8

8U-IP

8

4TO-H

4

4TO-H-IP

4

MIX18

5

5

4

4

MIX18-IP

5

5

4

4

MIX38

8

12

6

12

MIX38-IP

8

12

6

12

12O-H

12
12O-H-IP

12
24I
24

24I-IP
24

Inputs and outputs in multiprotocol I/O modules

## Universal Inputs

Universal inputs support four types of input signals:

• voltage (0-10 V DC, input impedance 100 kΩ);
• current (0-20 mA);
• resistance and temperature measurement (10k thermistor, a full list of supported temperature sensors is available here: List of Supported Temperature Sensors);
• dry contact (output current 1 mA).

Current measurement is realized by voltage measurement and 200 Ω resistance. According to Ohm’s law, the current is directly proportional to the voltage, and the resistance is the constant of proportionality. (I = U / R). According to the Ohm’s law equation, for 20 mA current with 200 Ω resistance the output voltage is 4 V. It means that the 4 V voltage measured on the universal input corresponds to 20 mA current. The result is expressed in millivolts.

### Universal Input Voltage Connection

A universal input voltage connection

### Universal Input Current Connection

A universal input current connection

### Universal Input Resistance Connection

A universal input resistance connection

### Universal Input Dry Contact Connection

A universal input dry contact connection

## Digital Inputs

Digital inputs operate as standard dry contact inputs and, additionally, as high speed pulse counters up to 100 Hz.

A digital input connection

### Digital Input Counter

A digital input can work as a counter of dry contact pulses up to 100 Hz. The connection is identical as in case of the dry contact input.

## Analog Outputs

Analog outputs provide a 0-10 V DC output with maximum load up to 20 mA. They support three types of output signals:

• voltage (0-10 V DC) with maximum load up to 20 mA;
• digital;
• Pulse Width Modulation (PWM) 0,01 Hz, 0,1 Hz, 1 Hz, 10 Hz, 100 Hz.

### Analog Output Voltage Connection

An analog output voltage connection

### Analog Output Relay Connection

An analog output relay connection

### Analog Output Actuator Connection

An analog output actuator connection

## Digital Outputs

Digital outputs operate as relay outputs with maximum loads of:

UL compliant ratings

Maximum ratings

Digital outputs (relays)

3 A at 24 V AC

3 A at 30 V DC

3 A at 230 V AC

3 A at 30 V DC

8 VA at 24 V AC

30 W at 30 V DC

75 VA at 230 V AC

30 W at 30 V DC

4O-H and 4O-H-IP

8 A at 230 V AC

8 A at 30 V DC

8 A at 230 V AC

8 A at 30 V DC

37 VA at 230 V AC

90 W at 30 V DC

360 VA at 230 V AC

90 W at 30 V DC

Resistive and inductive loads for digital outputs

### Digital Output Solenoid Valve Connection

A digital output solenoid valve connection

### Digital Output Resistive Load Connection

A digital output resistive load connection

### Digital Output Inductive Load Connection

A digital output inductive load connection

## Triac Outputs

Triac outputs work as typical binary outputs or in Pulse Width Modulation (PWM) mode: 0,01 Hz, 0,1 Hz, 1 Hz, 10 Hz.

A triac output connection

JavaScript errors detected