romod 4DIO-R - 4DIO-R Railmodul - 4x LED DO-status, 4x LED var, 4x A-0-H, 24V/3A

The module romod 4DI2DO-R-3P provides 2x 3-point relay outputs in two groups for controlling 2 OPEN-STOP-CLOSE drives or similar. The four digital inputs can be used to connect and signal four messages, such as operating messages, error messages or status messages. The romod 4DI2DO-R-3P is a Local Override/Indication Device (LO/ID), i.e. by means of the integrated switches, the module provides the ability of manual override of the DOs which are usually controlled via Modbus commands. Two switches belong to each of the two 3-point outputs. One is used to select between automatic mode (activation of the DO via bus command), OFF and manual override ON. The position of the other switch (OPEN-STOP-CLOSE) only affects the outputs if the first switch is in the "Manual" position. Digital Outputs: The relay outputs provide the normally open contact of each relay. Important: The signals to be switched must have the same phasing. For each channel, running times for opening and closing the blinds can be parameterized, as well as times for over- and understeering (longer activation than required for the complete opening or closing of the blinds). Please note: The configured running times will only work when the outputs are activated via bus commands. Digital Inputs: The control of the digital inputs will be done with 24 V switched by external dry contacts. The reference potential is defined via the COM terminals and can be both, 0 volts and 24 volts. When using a reference potential of 24 V, a control of the digital inputs with 0 V potential can be realized. By means of a configuration register, the four digital inputs can be defined for the use of limit switches. When an end position is reached, the drive will switch off. At the same time, the position of the blind, which is constantly calculated in the module, is corrected to 0% (closed) or 100% (open). If no end position is reached in automatic mode within the configured run times, the drive, however, will switch off for safety reasons, but not in manually oversteered mode. Furthermore, the digital inputs can also be configured for controlling the outputs using externally connected switches. Doing so, the outputs can then be controlled in exactly the same way as with the switches on the module. Any configured runtimes are not taken into account – as is also the case in manually overridden operation. For AC control of the inputs, the edge detection has to be delayed via configuration registers. In case of 50 Hz, this value should be set to at least 40 ms in order to avoid the counting of false detections.