Description
Use
MA-03 module is intended for control of signal towers of the WS-Ad series, using analog interfaces used in industrial automation systems.
Construction
The module housing is made of plastic, the shape of the housing allows direct mounting of the module on a DIN rail. The MA-03 automation module has two terminal strips consisting of eight tracks (each). The module connection terminals are located on the front of the housing, which facilitates wiring the device. MA-03 has ten OC type outputs with a common bus (optocoupler emitters included). The module also has separated power supply and control signal grounds.
MA-03 automation module has a single control input. The input can operate in two modes: current loop or control signal. Control input is equipped with three terminals: current, voltage and control signal ground terminal. The current control signal is understood as a current loop of 4-20 mA or 0-20 mA. The voltage signal, on the other hand, is of 0-10 V DC.
Fig. 1.1. MA-03 connection scheme
Notice
- supply voltage ground - GND 1
- signal control ground - GND 2
- OC output emitters shorted - GND 3
Additional
Control
Depending on the input signal value, the user can easily define the levels for which the module output is activated (color or acoustic signal of the WS-Ad signal tower). The user can, for each of the 10 module outputs, define the LOW value of the control signal (value at which the given output of the module is activated – shorted to ground), as well as the upper value of the control signal (the value at which the module output is switched off – open). Hysteresis is the default value, and is at either 0.05 mA or 0.05 V. The settings for each output are stored in non-volatile memory of the device. In the case of a current control signal, is it possible to set a threshold with a resolution of 0.1 mA, whereas for the analogue voltage control signal, such resolution is of 0.1 V.
Notice Default values (after purchasing the device) are voltage mode 0-10 V DC, outputs are not active.
Programming
The user interface is implemented using three 7-segment LED displays, two potentiometers and the select button. Thanks to such a solution, the interface is maximally simplified. During normal operation of the module, the upper display shows the value of the signal at the control input, the lower display shows the input mode (current or voltage). At the time when the input signal goes outside the range, the error is indicated by the message “Err”, the upper display shows the maximum value, the outputs are disabled. When the input operates in the 4-20 mA standard, values below 4 mA (damage to the loop) are also indicated by the error message “Err”.
To enter the module programming mode, press the button to view the input operating mode (default voltage 0-10 V DC).
Pressing and holding the button for 3 seconds takes you to programming the input operating mode. In this mode, the user can define whether the input is to operate in the voltage mode (0-10 V DC signal) or in the current loop standard (0-20 mA or 4-20 mA), in accordance with Fig. 1.3.
Fig. 1.3. Programming the operating mode of the MA-03 input
After programming the input operating mode, subsequent presses of the button display the output settings (the output number is displayed on the lower display). To change parameters (thresholds), hold down the button for 3 s (the segment will start blinking), then use the potentiometers to make settings, as shown in Fig. 1.4. Each time you press the button, it will toggle between the integer and decimal settings. Holding the button for 3 seconds will take you to the next output value preview menu.
Fig. 1.4. Programming MA-03 threshold values
Notice When programming output activation programs, the user should remember that the value of the upper threshold should be higher than the value of the lower threshold. If the values are incorrectly selected, the word "Err" will appear on the display, informing about the error (Fig. 1.5.).
Fig. 1.5. MA-03 settings error
After exiting the output threshold programming menu, the user can decide to save or not to save the changes made. If the user wants to save the settings, use the upper potentiometer to select the "Sav" option, then use the lower potentiometer to select the "yes" option, pressing the button confirms the new settings (Fig. 1.6.)
Fig. 1.6. MA-03 settings saving menu
Notice The save settings menu is visible only if the user has made any changes, if the user only navigated the value preview menu, the save settings menu will not be active.
After exiting the settings saving menu, the module returns to the operating mode.
Notice See examples at Download
