MAKOT MCH-07 Series User manual

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PPH MAKOT
ul. Przewóz 34/304
30-716 Kraków, Poland
[phone] [Sales]
[email protected] [Support]
[email protected] [Sales]
1. DESCRIPTION.
The second generation of MCH-07 controller is a universal, combined controller intended for use
in milking machines (devices) and milk tanks. This controller allows you to cool the milk
contained in the tank and to carry out the milk tanks and milking devices washing process.
The controller is characterized by flexibility in adapting it to various requirements. It is fully
programmable at the installation stage, and at the same time protected against possible
interference by the user in the settings.
The controller consists of two complex segments:
−cooling segment,
−washing segment,
however, it is not possible, even accidentally, to activate the washing process during the cooling
process. The washing segment is activated only when the cooling is switched off.
The MCH-07 controller has a waterproof casing (protection class IP65), adapted for built-up.
On request there is also a version with a flange for panel mounting (variant MCH-07.f). Power as
well as control inputs and outputs are led through glands placed on the lower part of the casing.
However, on request, a version with glands placed on the back of the casing is provided, which
allows the controller to be installed in such a way that the wires are hidden (variant MCH-07.b).
In the set with the controller there is a temperature sensor. In version MCH-07T an additional
temperature sensor is connected, which controls the heating of the water temperature during
the washing process.
The temperature sensors are in the rubber cover (protection class IP68), ending with stainless
steel sleeve. The controller signals the failure of the temperature sensor.
power supply
230V AC 50/60 HZ
protection class
IP65
safety class
CE

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general view of the MCH-07 controller
2. INSTALLING AND CONNECTING THE CONTROLLER.
In order to install the controller, unscrew the six screws and swivel the front of the controller,
paying attention to the cable connecting the upper PCB board with the bottom board. After
unfolding the casing, disconnect this cable. The cable is disconnected by removing the connector
plug located in the bottom plate.

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ATTENTION
Fixing the casing can be done only by screwing using the marked holes. It is forbidden to drill
the casing and fix the casing through such holes, because it causes loss of tightness of the
casing.
MCH-07T version
In the event that the relay 4 in the washing segment is set as the stirrer control, then the control
of the stirrer of the cooling segment and the washing segment can be combined.

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Control of 230V AC power via relay 5.
3. COOLING SEGMENT.
Activation of the cooling process by the user blocks the possibility of switching on the washing
process, which results in the total turning off of the washing segment display.
view of the controller with the cooling process on

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3.1. Technical data of the cooling segment.
temperature measuring range
from -40,0 OC to +99,0 OC
control temperature range
from -40,0 OC to +99,0 OC
(decreased by a set hysteresis)
measuring resolution of the
temperature measurer
(resolution of control temperature
settings)
1 OC in the range below -9,9 OC
0,1 OC in the range between -9,9 OC and +99,0 OC
control hysteresis
from 1,0 OC to 20,0 OC
pre-cooling time
from 1 h to 18 h
cooling delay time
from 1 min. to 99 min.
stirrer operation time
from 1 min. to 60 min.
stirrer standstill time
from 1 min. to 60 min.
stirrer manual operation time
continuous or from 1 min. to 60 min.
length of temperature sensors
5 m
type of temperature sensor
thermistor NTC
type of temperature meter
digital LED
load capacity of the relay contacts,
controlling the chiller (unit)
30A 250V AC

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load capacity of the relay contacts
controlling the stirrer
10A 250V AC
3.2. Controller functions in the cooling mode.
The cooling segment of the MCH-07 controller is equipped with the functions described below.
1. Controlling the operation of the chiller (unit) according to two preset temperatures,
e.g. pre-cooling temperature after milking and the temperature of the target cooling
temperature in the storage process.
2. Delaying the activation of the cooling process for the time needed to finish the milking
process.
3. The supervisory function of the chiller (unit) operation, consisting in the possibility of setting
the maximum and minimum working operation of the chiller (unit), as well as the minimum
time of standstill of the chiller (unit).
4. Option of setting the automatic operation of the stirrer in two variants:
−cyclic operation of the stirrer, independent of the operating condition of the chiller
(unit);
−the stirrer operates continuously during the operation of the chiller (unit), and when
the chiller (unit) is switched off, the stirrer switches to cyclical operation.
5. Manual switching on of the stirrer's work.
6. Saving maximum and minimum temperature values throughout the controller's work cycle;
this function is combined with the possibility of temporally delaying the recording
of temperature data to the controller's memory from the moment of its switching on.
7. Saving the maximum temperature value in the washing process.
8. Monitoring and signaling of the measuring sensor damage.
3.3. Programming for the cooling segment.
The controller is factory-programmed for standard operating conditions. In order to change the
factory default, enter the settings mode and make the required corrections. The following figure
illustrates the programming procedure:

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3.4. Cooling segment operation by the installer.
Entering the settings can be made both when the cooling process is on or off. In the case
of entering the settings when the process is on, the cooling will be interrupted and after exiting
from the settings, the cooling should be switched on again.
3.4.1. Table of settings for the cooling segment.
ATTENTION
The parameters from the table below, which are marked in gray, must not be changed.
The warranty granted by the manufacturer does not cover damage to the controller due to
the change of these parameters.
description of the function
symbol
range of settings
factory
setting
entry in the settings
UC
access code
12.0
limitation of the lower value for
the control temperature range1
b1
setting the temperature value from
-40 OC to +99 OC, every 1,0OC
2.0 (OC)

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limitation of the upper value for
the control temperature range1
b2
setting the temperature value from
-40 OC to +99 OC, every 1,0OC
10.0 (OC)
control hysteresis
HI
setting the temperature from 1,0 OC
to 20 OC, every 0,1 OC
2.0 (OC)
blockade of control temperature
changes
LF
0–inactive; blockade is off
1–active; blockade is on
0
delay of cooling start
for milking time
0d
0–inactive
>0 –active; setting the time from
0 min. to 99 min., every 1 min.
0
milk pre-cooling time
FC
0–inactive
>0 –active; setting the time from 0 h
to 18 h, every 1 h
0
minimum operting time
of the chiller (unit)
CA
0–inactive
>0 –active; setting the time from
0 min. to 60 min., every 1 min.
0
maximum operating time
of the chiller (unit)2
CC
0 –inactive
>0 –active; setting the time from 0 h
to 9 h, every 1 h
0
minimum standstill time
of the chiller (unit)
CF
0 –inactive
>0 –active; setting the time from
0 min. to 60 min., every 1 min.
0
AS
changing the parameter value is not
recommended 3
3.0
AP
3.0
stirrer operating mode
F0
0–work according to the times set in
E1 and E2, independent of the
operation of the chiller (unit)
1–continuous work during
the chiller (unit) operation,
and during the standstill of the chiller
(unit), the stirrer works according
to times set in E1 and E2
1
standstill time of the stirrer
E1
setting the time from 1 min. to
60 min., every 1 min.
15 (min.)
operation time of the stirrer
E2
setting the time from 1 min. to
60 min., every 1 min.
2 (min.)
stirrer manual operation
CP
0–continuous work
>0 –setting the time from 1 min. to
60 min., every 1 min.
5 (min.)
LP
changing the parameter value is not
recommended 3
14.0
EP
40
CL
1
delay in measuring the maximum
and minimum temperatures after
turning on the cooling process
AA
setting the time from 0 h to 18 h,
every 1 h
2.0 (h)
return to factory settings
PP
0 –inactive
1–active
0
scaling the temperature sensor 4
CU
setting the temperautre from
-10,0 OC to +10,0 OC, every 0,1 OC
0.0
exit from the settings
EE

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1Adjustments must be made so that the condition b1<b2 is always met. The values of parameters b1 and
b2 are not control temperature settings; these are the temperature values between which the control
temperature can be set (a section from the entire control temperature range of the controller).
2This function is active only when the minimum standstill time of the unit has been set (CF).
3Changing the parameter value is not recommended, because it can lead to incorrect operation of the
controller, and even its damage.
4Set up during the production phase –do not change without a clear need.
3.4.2. Chiller (unit) control function.
The chiller (unit) is controlled in the cooling phase depending on the temperature in the cooling
chamber. The controller allows one or two settings to be controlled, depending on the FC
parameter settings (milk pre-cooling time –see section 3.4.1.):
•FC=0 –no pre-cooling; in this case, the settings made in t1 (see section 3.5.) are the
only temperature for cooling the milk; the cooling signal diode is permanently on,
•FC>0 –during the time set in FC, pre-cooling takes place according to the settings made
in t1 (cooling signal diode blinks) and after the time set in the FC has elapsed, cooling
according to the temperature set in t2 starts (cooling signal diode is permanently on).
At any time, you can interrupt the pre-cooling and go for cooling according to the target
temperature. This is done by pressing the button during pre-cooling; the signal diode starts
to changes its lighting to continuous.
The controller can control the cooling temperature in the range from -40 OC to +98 OC. In order
to limit the scope of the control so as to prevent the user of the cooling device from setting
the temperature outside this range, set the appropriate parameters in the appropriate ranges:
b1 –limiting the lower value for the control temperature range and b2 –limiting the upper value
for the control temperature range.
It is also important to set the control hysteresis correctly –parameter HI. The control hysteresis
determines the temperature difference at which the compressor is switched off and then on,
e.g. if the control temperature is set as 4OC, and the hysteresis on 2OC, the compressor will stop
after reaching 4OC, and its re-activation will occur after the temperature increases to
4 + 2 = 6OC. The controller allows setting the control hysteresis in the range from 1OC to 20OC.
ATTENTION
The set hysteresis value automatically limits the extreme values of the control range so that
the operating range of the controller is not exceeded.
3.4.3. Delaying the activation of the cooling process.
This function makes it possible to switch on the controller by pressing the button and
the cooling process will be delayed. This delay will be equal to the set time in 0d (default 0d=0).
This solution enables simultaneous activation of the controller's operation with the start of the
milking process.

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If this function has been activated, after pressing the button , the display will show the time
to start the cooling process.In order to more accurately distinguish the displayed time, this
signaling is additionally underlined by blinking alternately dots at the display.
At any time, by pressing the button again you can interrupt the countdown of time, and thus
go to the cooling process.
3.4.4. The supervisory of the chiller (unit) operation.
The controller is equipped with compressor safety functions, such as:
•CF –minimum standstill time of the chiller (unit),
•CA –minimum operating time of the chiller (unit),
•CC –maximum operating time of the chiller (unit).
Setting these parameters can also affect on the actual temperature fluctuations in the cooling
chamber. For example, if the compressor has a minimum operating time of 5 min. and
the control temperature has been reached after 3 min., the compressor will not be switched off
earlier than after 5 min. The same applies to the minimum standstill time of the unit. In this case,
the temperature fluctuations in the cooling chamber will be higher than it would appear from
the set hysteresis (parameter HI).
3.4.5. Automatic operation of the stirrer.
Automatic stirrer operation can take place in two options, depending on the settings made:
•F0=0 –cyclical operation of the stirrer, independent of the operation of the chiller
(unit),
•F0=1 –continuous operation of the stirrer during operation of the chiller (unit) and
cyclic operation during the chiller (unit) standstill.
The cyclic operation of the stirrer takes place as follows: work –standstill –work –..., always
starting from work.
The operation time of the stirrer is determined by E1, and its standstill time is determined by E2.
3.4.6. Manual operation of the stirrer.
In addition to the automatic operation of the stirrer, the controller allows you to manually switch
on the stirrer at any time (when the stirrer is not working). Depending on the settings made in
the CP parameter, you can set two variants of manual operation:
•CP=0 –continuous stirrer operation from the moment of manual activation until
the manual switch-off,
•CP>0 –work for a specified period of time; the value of the CP parameter (>0) means
the operation time of the stirrer activated manually; the stirrer operation in this
variant can also be interrupted at any time by pressing the button .

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3.4.7. Saving the maximum and minimum temperature values during the cooling process.
The controller has a function of saving in its internal memory maximum and minimum
temperature values that occur throughout the controller's entire cycle. This function makes it
possible to check whether the contents of the tank are stored in correct temperature conditions.
At the moment the cooling is switched on, after the programmed delay has elapsed (AA –see
section 3.4.1.), the minimum and maximum temperature values are saved in the controller
memory. The programmable delay time of enabling this function allows the fresh milk to be
pre-cooled and thus does not take into account the maximum temperature when the cooling is
started. The factory setting is 2 hours, however, this time should be selected according to the
actual operating conditions of the controller.
At any time, you can read the currently available maximum and minimum values. This is done
by pressing briefly the Sbutton and selecting the parameter H0 (maximum value) or parameter
L0 (minimum value).
ATTENTION
In the absence of entries of maximum and minimum temperature values in the controller's
memory the symbol --- appears on the display.
Clearing the memory of maximum and minimum temperature values is caused:
−automatically after turning the cooling off and on again; switching off the cooling itself
does not erase the memory, it takes place only after switching it on again,
−in the event of a power supply failure.
3.4.8. Saving the maximum temperature value during the washing process.
The maximum temperature that is present when the controller is not in cooling mode is also
written to the controller's internal memory. Because the washing process must be carried out
with the cooling off, the temperature then present is also the maximum temperature in the
washing process. However, if the washing process is not carried out during inactive cooling,
the stored temperature is the maximum value that occurred at that time.
The deletion of data contained in the memory occurs automatically after starting the cooling
process. In the absence of data saved in the controller's memory after setting the data reading
parameter –HC, the display shows the symbol ---.
3.4.9. Monitoring and signaling of the measuring temperature sensor damage.
If the controller detects damage to the temperature sensor, the unit and the stirrer are switched
off. The letters ACU appear on the display.
ATTENTION
Sensor damage indication also occurs, if the temperature range measured by the controller is
exceeded.

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3.4.10. Returning to the factory settings.
If changes are made to the factory settings and the controller is not working properly (at any
stage of its use), first you need to resore the factory settings.
In order to do so: →enter the settings →select PP →confirm →set parameter PP=1 →confirm
→switch off the controller supply voltage →switch on the controller supply voltage again.
After performing the above-described activities, the controller will return to the factory settings,
therefore any changes made to the settings will be deleted.
After switching on the power again, the PP parameter will automatically re-set to 0.
3.4.11. Scaling the temperature sensor.
If there is a discrepancy in the controller’s temperature meter with the reference meter, you can
adjust the indications.
In order to do so: →enter the settings →select the CU →confirm; the display will show 0.0 →
measure the milk temperature with the reference meter →the difference between the
reference meter and the controller meter should be set with the ▲and ▼buttons, paying
attention whether the value should be added or subtracted (minus sign) →confirm the change
by pressing the button S→exit the settings.
ATTENTION
The change of the meter scaling should be done with caution, as in some cases it is enough
to move the measurement sensor to a different location or increase the contact between
the sensor and the measured medium. Particular attention should be paid to all intermediate
measurements, e.g. when measuring milk temperature by measuring the tank wall
temperature.
3.5. Table of settings for the cooling segment available for the direct user.
ATTENTION
The controller is equipped with a function that makes it impossible to change the control
temperature set by the installer. This function is activated by setting parameter LF=1 (default
LF=0).
description of the function
symbol
factory
setting
basic control temperature
t1
5.0
pre-cooling temperature
(the function is active if FC>0 –see section 3.4.1.)
t2
5.0
recalling from the controller memory the maximum temperature
value during the cooling process
H0
N/A

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recalling from the controller memory the minimum temperature
value during the cooling process
L0
N/A
recalling from the controller memory the maximum temperature
value during the washing process
HC
N/A
exit the settings
EE
The following figure illustrates the procedure for handling the controller cooling segment by
a direct user.

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3.6. Description of the cooling segment operation.
When the controller is connected to the power supply, the display shows the currently measured
temperature. In addition to displaying the temperature value, the controller does not control
any external elements.
Pressing the button causes the cooling control operation to start. This status is indicated by
diode placed above the display (blue). Depending on the programming of the controller,
this signaling is intermittently flashing (pre-cooling) or continuous. The work of the chiller (unit)
is signaled by the diode located above the button. The chiller (unit) then works in an automatic
cycle according to the settings made.
The operation of the stirrer is indicated by the diode located above the button . Pressing
the button causes manual operation of the stirrer, which is indicated by the intermittent
lighting of the diode located above this button. Manual operation of the stirrer is possible in the
following cases:
−if cooling is switched on and the stirrer is not working,
−if cooling is switched off,
−if the washing process is on.
During the manual release of the stirrer, pressing the button again switches off the manual
operation mode.
It is recommended to change the control temperature after switching off the cooling process.
The temperature values saved can be read both when the cooling process is switched on and
off.
ATTENTION
Disconnecting the controller from the power supply erases the data contained in its memory.
4. WASHING SEGMENT.

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The washing segment in the MCH-07 controller is activated only when cooling is switched off;
this activation is indicated by the appearance of the - - - - symbol on the display.
The washing segment may vary depending on the version of the controller:
−MCH-07 –basic version,
−MCH-07T –a version with the possibility of controlling water heating.
view of the controller with the washing process on
The controller has:
−7 relay control outputs; relays 1, 2, 3, 4, 6, 7 have normally open contacts that output L 230V
AC signal, while relay 5 has the following contacts: input signal, normally closed contact and
normally open contact.
−hydrostatic connection input (hydrostatic activation signal –L 230V),
−input for connecting the temperature sensor (only version MCH-07T).
4.1. Technical data of the washing segment.

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number of programs
8
number of factory (default) programs
4
maximum number of steps in each program
50
minimum duration of one step
1 s.
maximum duration of one step
99 min.
range of the control temperature
[only MCH-07T version]
from 9,0 OC to 99,0 OC
resolution of control temperature settings
[only MCH-07T version]
0,5 OC
length of temperature sensor
[only MCH-07T version]
5 m
number of relay outputs
7
load capacity of the relay contacts
10A 250V AC
number of control inputs
MCH-07 –1 (hydrostatic)
MCH-07T –2 (hydrostatic and temperature
sensor)
type of display
LED
power supply
23 V AC 50Hz
4.2. Controller functions in washing mode.
The MCH-07 controller has a number of functions of the washing segment described below.
4.2.1. Washing programs.
Controller’s memory has capacity for 8 programs, with two programs for washing the milking
machines (devices) and two programs for washing the cooling devices pre-programmed.
The remaining 4 spots allow an installer to create programs adapted to the individual needs
of an user.
4.2.2. Modification and creation of programs.
The controller allows to modify factory programs according to the needs of the user.
It is also possible to create programs by yourself (by the installer). Each program can have
a maximum of 50 steps with a duration of 1 sec. to 99 min. The programming method has been
presented in the graphic form in section 4.3.2.
4.2.3. Protection in the event of a power supply failure.

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Loss of power supply interrupts the execution of the activated washing program. When the
correct supply voltage returns, the program will start in the same place where it was stopped.
In the settings of this function (UAP –see section 4.3.1.), it is possible to set time limit for
returning to the interrupted program (in range from 1 h to 9 h).
4.2.4. Service / test mode.
This function allows moving successively to the next program steps without waiting for the
duration of the step to expire. The transition is made by pressing the appropriate button.
This function is only available to the installer.
4.2.5. Return to factory settings.
In the event of making a mistake while setting the controller's work or finding an incorrect
operation of the controller (at any stage of its use), it is possible to return to the factory settings
(Pd0d –see section 4.3.1.).
4.2.6. Manual activation of the vacuum pump or the stirrer.
The controller is equipped with a button enabling manual activation of the vacuum pump or the
stirrer, regardless of the button , but depending from UPP parameter setting –see section
4.3.1.
4.2.7. Program start function.
The program is started by manually pressing the button located on the front of the controller.
4.2.8. Pausing the program.
The controller allows to pause (hold) the program execution during its implementation. This
function allows to interrupt the program at any time and resume it, which happens exactly
in the same step, in which the program was paused.
4.2.9. Disabling the program.
The controller is equipped with a button that disables the program at any time, without
the possibility of resuming it at the switch-off point. Restarting the program will cause launching
the program from the very beginning.
4.2.10. Displaying the time remaining.
During the program execution, the controller displays the time remaining until the end of the
program.
ATTENTION
The time indicated on the display does not take into account the time of pouring water.

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4.2.11. The function of dependence on the completion of pouring water from the hydrostatic
signal.
The controller allows to program the end of the water dispensing proces from obtaining a signal
from a hydrostatic. This function is secured by setting the maximum time for pouring water
in the event of mechanical suspension of the hydrostatic.
4.2.12. Water heating control (only MCH-07T version).
The MCH-07T version has a built-in temperature regulator that allows you to control the heating
of water. This function requires the connection of a temperature sensor and the setting of the
temperature of the water heating (the factory setting is 45OC).
4.3. Washing segment use by the installer.
The controller is factory-programmed for standard operating conditions for the purpose
of washing: milk cooler (2 programs) and milking devices (2 programs). Nevertheless, to ensure
proper operation of the controller under specific conditions, appropriate adjustments of the
operating parameters can be made, including the selection of the appropriate program. Deafault
washing programs can be edited according to the user's needs or you can create your own
program.
After the controller has been installed, the correct operation of the entire washing system can
also be checked in an accelerated mode using the test mode.
4.3.1. Table of settings for the washing segment.
description of the function
symbol
range of settings
factory setting
entry in the settings
U000
access code
121
edition of the programs
EdPr
edition of the factory
programs and creation
of own programs –
see section 4.3.2.
8 programs –
see section 4.3.3.
setting the number
of program to be executed
by the controller
dPro
Pro1, Pro2, Pro3, Pro4,
Pro 5, Pro6, Pro7, Pro8
Pro1
setting the manual
activation of the vacuum
pump or the stirrer
UPP
0–inactive
1–manual activation of the
vacuum pump avaiable
2–manual activation of the
stirrer avaiable
0
test mode
UEL
0–inactive; test mode is off
1–active; controller
operates in the test mode
0
setting the heating option
(only MCH-07T version)
OHA
0–inactive
1–heating with time limit
2

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2–heating without time
limit
setting the maximum time
of power supply failure,
after which the controller
will return to the set
program execution
UAP
0–inactive; resuming
operation is not time-limited
>0 –active; setting the time
from 1 h to 9 h; if the break
is longer, the controller will
not resume its operation
9 (h)
return to factory settings
(only after restaring the
controller)
Pd0d
0–inactive
1–active; return to factory
settings, though it is
required to turn the
controller power off and on
again
0
exit from the settings
EE
4.3.2. Programming for the washing segment.
The controller is protected against accidental entry into the service settings mode, assuming only
those available to the installer or service technician. These safeguards include:
−the necessity to press and hold the Sbutton (enter settings) for approx. 15 sec.,
−the necessity to enter the access code (see section 4.3.1.),
−entering the access code in a few steps.
ATTENTION
Please do not share the access code with the direct users.
All changes in programming are made with the washing process switched off and at the same
time active washing segment (cooling is off).
4.3.2.1. Entering the settings.
The procedure for entering the access code to enter the settings and programming is shown
below.

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4.3.2.2. Selecting the function to be edited.
In section 4.3.1. all available functions are given with their description and possible values to be
set. If you want to change any from the available settings, enter the settings (see section
4.3.2.1.), and then select the specific function that will be changed. The following is a graphical
representation of the change of the washing program number (program number 1 is preset).
4.3.2.3. Editing the programs.