MAKOT SMT-01, SMT-02, SMT, SMT-02H, SMT-03 User Manual
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PPH MAKOT
ul. Przewóz 34/304
30-716 Kraków | Poland
www.makot.pl
+ 48 537 872 522 (Sales Department)
+ 48 602 260 992 (Technical Department)
biuro@makot.pl (Sales Department)
dt@makot.pl (Technical Department)
1. DESCRIPTION.
Temperature regulators of SMT series are a microprocessor-based, programmable
temperature controllers, intended for use i.a. in milk coolers and all types of dryers.
The series includes the following regulators:
− SMT-01,
− SMT-02,
− SMT-02H,
− SMT-03.
Individual types differ from each other in the way of output of control inputs and
outputs. The casing of regulators in this series are adapted for panel mounting.
2. TECHNICAL DATA.
temperature measuring range
between -40 OC and +120 OC
control temperature range
between -40 OC and +120 OC
(decreased by a set hysteresis)
measuring resolution of the
temperature measurer (resolution
of control temperature settings)
1 OC for the range below -9,9 OC
0,2 OC for the range from -10 OC to +100 OC
1 OC for the range over +100 OC
control hysteresis
[programmable parameter]
between 0,2 OC and 10 OC for the range from -10 OC to +100 OC
between 1 OC and 10 OC for the range <-10 OC and >+100 OC
working time of the stirrer
(ventilator)
[programmable parameter]
between 1 min. and 60 min.
standstill time of the stirrer
(ventilator)
[programmable parameter]
between 1 min. and 60 min.
temporary work time of the stirrer
(ventilator)
[programmable parameter]
between 1 min. and 60 min.
time delay for switching the unit /
stirrer on after the regulator is
between 1 s. and 999 s.
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turned on or the power supply
decay occurs
length of control sensors
5 m
type of temperature sensor
thermistor NTC
type of temperature measurer
digital LED
load capacity of relay contacts
controlling the unit (heating system)
30 A 250 V AC
load capacity of relay contacts
controlling the stirrer (ventilator)
10 A 250 V AC
power supply
230 V AC 50 HZ
protection class
IP 55
safety class
CE
3. CONSTRUCTION.
Regulator SMT is placed in a compact casing, including all control and executive
elements:
The regulator is equipped with:
✓ button for switching the regulator on and off [1],
✓ button disabling automatic stirrer (fan) operation [2],
✓ button enabling manual operation of the stirrer (fan) [3],
✓ digital temperature meter allowing for current temperature control, independently
from switching on or off the regulator [6],
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✓ LEDs signaling the current operating status of the cooling (heating) unit and the
stirrer (fan) [7] [8] [9] [10]
✓ input for connecting the limit switch,
✓ control outputs, that is:
− unit control output (heating system),
− stirrer (fan) control output.
In the figure above, the types of outputs and inputs are shown, depending on the type
of regulator.
The regulator SMT-02H v. 3, apart from cable entry through glands, has a sealing
connection of the front part of the casing with its back, which ensures splash-proofness.
ATTENTION
The blue LED indicates the activation of the cooling (heating) mode. If the LED is off,
and the regulator is connected to the mains, it means the cooling (heating) operation
of the regulator is switched off. However, you can switch on the stirrer’s manual
operation by pressing the button [3].
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If the regulator’s control operation is switched off, a dot is displayed on the regulator's
display (factory settings). By changing the parameter d1 (see 6. PROGRAMMING) from
the value 0 for value 1, when the regulator is switched off, the display will show the
current measured temperature.
4. SCHEME OF CONNECTION OF THE REGULATOR.
In order to connect the regulator to the device with which it is to be controlled,
the following should be done:
✓ prepare the hole in the refrigeration device to install the regulator
✓ place the regulator in the prepared hole and screw it in properly,
✓ place the temperature sensor inside the cooling chamber in the most convenient
place for temperature measurement and at the same time shielded from accidental
damage,
✓ connect the regulator to the outputs located on the rear wall of the casing, according
to the following scheme:
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