MC-504 automatic control unit for wood dryers is a device
that automatically controls drying process in
conventional kilns kilns.
The device is an upgrade of the MC-502R automatic control unit , which has been modified to improve drying in classic dryers. This primarily refers to the addition of a relay output for the damper servomotor and the fan in the damper. Buttons for starting and stopping the drying process have also been added. The automatic control unit is now placed in a plastic box suitable for wall mounting, which simplifies installation. If necessary, it can be placed in a metal box and installed in a control and development cabinet. The MC-504 automatic control unit uses the DS-04t measuring box, which forwards the obtained data to the MC-504 automatic control unit. The LI6YC6Y 12x0.34 cable supplied by "NIGOS" is used to connect the boxes.
An additional advantage of this device is its low price, and is therefore primarily intended for installation in cheaper dryer variants ( NKS ).
The pictures on the right show the connection of the machine to the DS-04t box, as well as an enlarged view of the DS-04t box with the probes installed.
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The device achieves optimal conditions for drying wood in the kiln by regulating the temperature and air humidity. Based on the data obtained by measuring the temperature and equilibrium moisture (from 1 measuring point) and the moisture in the wood (from 4 measuring points) and the conditions set by the user, the MC-504 manages the process automatically, semi-automatically or manually.
In the automatic mode, the device operates according to the built-in drying modes. The machine, based on the set data and measured values, controls the equipment in the kiln ( fans , valves , sprinklers , etc.) automatically, via its relay outputs. In the semi-automatic mode, the user sets the desired values for temperature and equilibrium moisture based on their own experience and the measured moisture in the wood, and the machine only maintains the user-set values.
In the manual mode, the buttons on the right side of the device are used. The buttons allow the user to select the manual mode for controlling the valves, valves and humidification or changing the direction of the fan. In this operating mode, the machine only displays the measured values for the corresponding size, but does not affect the operation of the equipment with its relay outputs. The user must then regulate the temperature and humidity of the air by pressing the switches for controlling the operation of the equipment in the dryer.
After a power outage, if it was started, drying automatically continues when the power is restored, starting from the measured moisture in the wood.
The technical characteristics of the MC-504 machine are given in the tables.
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