ICS TRIPLEX T8311 Function is introduced

ICS TRIPLEX T8311 Function is introduced

Features of the digital outputs: – The 16 digital outputs are arranged in two groups of 8 outputs each. – The two groups are electrically isolated from each other. – The outputs can be loaded with a rated current of 500 mA. – Each group as a whole is electrically isolated from the rest of the device. – The outputs employ semiconductors and are shortcircuit and overload-proof. – The outputs are automatically switched off in case of overload or short-circuit. – An overall error message indicates whether a shortcircuit or an overload has occurred on a output group. – The overload is displayed by the red LED Ovl. and via error flags in the PLC. – The red LED Ovl. goes out when the overloaded output is switched on again automatically. – The outputs are safe against reverse polarity and forced supply of 24 V DC.

Features of the digital inputs/outputs: 

– The 8 digital inputs/outputs are arranged in one group. – The group as a whole is electrically isolated from the rest of the device. – The inputs/outputs can be used individually as input, output or re-readable output. – If the terminals are used as digital inputs, the input signal delay can be configured to 7 ms (default) or to 1 ms (see "System technology"). – If the terminals are used as digital outputs, the output signals "1" are individually monitored by the re-readable input. If the output status is wrong, an overall error message is generated for the involved output group. The error is displayed by the red LED Ovl. and by error flags of the PLC then. The error could have been caused by overload, short-circuit or missing supply voltage UP5/ZP5. The technical specifications of the outputs are the same as with the other digital outputs.

Circuit configuration of the digital inputs/outputs

The technical specifications of the inputs are the same with the other digital inputs, but with the following exception: Caused by the direct electrical connection with the output, the varistor for demagnetization of inductive loads (see figure above) is also in effect at the input. Therefore, the voltage difference between UP5 and the input signal must not be greater than the limit voltage of the varistor. The limit voltage of the varistor is ca. 36 V. This means, that if UP5 = 24 V, the input signal voltage must be between -12 V and +30 V. If UP5 = 30 V, the input voltage has to be within -6 V and +30