The ZAC24-IP-D is equipped with 24 inputs and outputs:
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8 universal inputs,
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4 digital inputs,
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6 analog outputs,
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2 digital outputs,
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4 SSR outputs.
Universal Inputs
The ZAC24-IP-D device is equipped with 8 universal inputs.
Universal inputs support four types of input signals:
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voltage (0-10 V DC, input impedance 100 kΩ);
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current (0-20 mA);
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resistance and temperature measurement (10k thermistor, a full list of supported temperature sensors is available here: List of Supported Temperature Sensors);
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dry contact (output current 1 mA).
Universal Input Voltage Connection
Universal Input Current Connection
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 Resistance Connection
Universal Input Dry Contact Connection
Digital Inputs
The ZAC24-IP-D device is equipped with 4 digital inputs.
Digital inputs operate as standard dry contact inputs and, additionally, as high speed pulse counters up to 100 Hz.
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
The ZAC24-IP-D is equipped with 6 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:
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voltage (0-10 V DC) with maximum load up to 20 mA;
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digital;
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Pulse Width Modulation (PWM): 0.01 Hz, 0.1 Hz, 1 Hz, 10 Hz, 100 Hz.
Analog Output Voltage Connection
Analog Output Relay Connection
Analog Output Actuator Connection
Digital Outputs
The ZAC24-IP-D device is equipped with 2 digital outputs.
Digital outputs operate as relay outputs with maximum loads of:
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resistive load: 3 A at 230 V AC, 3 A at 30 V DC;
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inductive load: 75 VA at 230 V AC, 30 W at 24 V DC.
Digital Output Electrovalve Connection
Digital Output Resistive Load Connection
Digital Output Inductive Load Connection
SSR Outputs
The ZAC24-IP-D device is equipped with 4 SSR outputs.
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PWM mode: 0.01 Hz, 0.1 Hz, 1 Hz, 10 Hz (recommended load of at least 1 mA for proper functioning of the PWM mode).
SSR Output Electrovalve Connection
SSR Output Resistive Load Connection
SSR Output Inductive Load Connection
