Automatic control unit MC-502R
is a device that automatically controls drying process in
small conventional kilns. It can also be used in bigger
conventional dryers as a cheeper option for automatic controllers
device is based on older automatic control unit
which is modified to further improve drying process in
conventional dryers. This regards above all on adding the
relay output for fans direction reversion. Also, buttons for
starting and stopping of the drying process are added. Device
alone is now placed in plastic box suitable for wall mounting
which makes installation process much easier. Further more, a
newest concept of temperature, EMC and wood MC data aquisition
is applied. MC-502R standard configuration includes
measurement box DS-04 attached to measurement module
which transfers data to MC-502R. These boxes are
interconnected using LIYCY 10x0.34 cable which is provided and
delivered by "NIGOS" with the rest of equipment. This
way, the nuber of cables used for installation is greatly
reduced and the control unit itself can be placed on greater
distance than before (up to 30 m).
Aditional advantage of this device is its low price, so it is
ideal for low-cost dryers (NKS).
Pictures on the right show connection of MC-502R with
and DS-04 boxes, as well as enlarged picture of
box with fitted probes.
MC-502R achieves optimum conditions for wood
drying inside the chamber through air temperature and humidity control.
MC-502R controls its relay outputs automatically, semi-automatically
or user can do it manually based on data obtained from temperature and
EMC probes (in 1 point) and wood MC probes (obtained from 4 points). In
addition, control of drying process is adjusted according to user
In automatic operation mode, MC-502R follows
chosen drying schedule (regime). There are 20 invariable (built-in)
schedules which are inserted in unit's memory by "NIGOS" during production and which can not be changed.
In semi-automatic operation mode user set the
desired values for temperature and EMC based on personal experience and
measured wood MC and automatic control unit MC-502R only maintain
this values inside the chamber.
In manual operation mode, buttons and switches
on the right side of device are used. Switches give the user an ability
to choose manual control of heating valve, servo-controlled flaps and
valve for spraying. Button is used for change (reversion) of fans
direction. While in manual operation mode, MC-502R only displays
measured values for T, EMC and MC, but it has no influence on the relay
outputs and equipment inside the chamber. User himself must control
temperature and humidity by pressing the appropriate buttons.
After power failure, if it was started, drying will
automatically continue when power is reconnected starting from measured
Automatic control unit is delivered with following
equipment included (standard configuration):
- Automatic control unit MC-502R: 1 pcs
- Measurement module MM-01: 1 pcs
- Measurement box DS-04 with fitted temperature probes: 1 pcs
- EMC paper holder which is fitted on DS-04 box: 1 pcs
- EMC paper in quantity sufficient for 2 years drying: 1 set
- Set of wood MC probes for different wood thickness: 1 set
- Cables for boxes connection: 12m
- Tephlone cables for wood MC measurement: 8m x 4 pcs
Warranty for automatic control unit MC-502R
is 5 years.
Technical data of MC-502R are given in the following