1. DESCRIPTION
The
MT-444
e
Faston
has 3 recipe options, each with its control temperature and their
differentials (hysteresis), as well as specific keys for triggering / disabling and turn the lamp on / off. It
also has a digital filter, which has the purpose of simulating an increase in mass in the ambient sensor
(S1), delaying its response time (thermal inertia) and avoiding unnecessary compressor trips. It also
includes an intelligent blocking of functions and a shutdown mode of the control functions.
Product conforming to UL Inc. (United States and Canada).
2. SAFETY RECOMMENDATIONS
- Check the controller for correct fastening;
- Make sure that the power supply is off and that it is not turned on during the controller installation;
- Read the present manual before installing and using the controller;
- Use adequate Personal Protective Equipamenet (PPE);
- For application at sites subject to water spills, such as refrigerated counters, install the protecting vinyl
supplied with the controller;
- For protection under more critical conditions, we recommend the Ecase cover, which we make
available as an optional item (sold separately);
- The installation procedures should be performed by a qualified technician.
3. APPLICATIONS
• Beverage displays; • Reach-in coolers;
• Refrigeration counters;
• Up right freezers.
4.TECHNICAL SPECIFICATIONS
evolution
V
er
.01
Setpoint Temperature
5. INDICATORS AND KEYS
Upper key
Lower key
Set Key
Quick Access
Menu Key (Flatec)
Refrigeration indicator LED
Defrost indicator LED
Temperature unit indicator LED
- 50 to 75°C (-58 to 167°F)
Power supply
MT-444E Faston:
115 or 230Vac ±10%(*) (50/60 Hz)
MT-444EL Faston:
12 or 24Vac/dc +10%(*)
Operating Temperature
-10 to 50°C / 14 to 122°F
Operating humidity
10 to 90% RH (without condensation)
(*) Admissible variation in relation to the voltage rating.
(**) Maximum dimensions without connectors.
Maximum dimensions (**) (mm)
Cutouts dimensions (mm)
76 x 34 x 84 (WxHxD)
X = 71±0,5 Y = 29±0,5 (see Image V)
Maximum current per output
COMP:
12(8)A / 240Vac 1HP
DEFR:
3A / 240Vac 720W
FAN:
5(3)A / 240Vac
LIGHT:
5(3)A / 240Vac
Digital input
input for open-door detection (dry contact type)
6. WIRING DIAGRAM
The
sensor S1
(black) must be in the ambient.
The
sensor S2
(gray) must be placed in the evaporator
through metallic cramp.
6.1. Temperature sensor connection
- Connect the
sensor S1
wires to terminals "1 and 2" and wires
sensor S2
to terminals "3 and 4": the
polarity is not relevant.
- Length of the sensor cables can be increased by user himself to up to 200 meters, using a PP 2x24
AWG cable.
6.2. Recommendations of IEC60364 standard
a)
Install overload protectors in the controller supply.
b)
Install transient suppressors – suppressor filter RC – in the circuit to increase the service life of the
controller relay. See connection instructions of the filter on the previous page.
c)
The sensor cables may be together, but not in the same conduit where the power supply of the
controller and/or of the loads passes through.
Light indicator LED
Fan indicator LED
Power-saving mode indicator LED
MT-444
e
Controller power supply
Use the pins according to table below, considering the set version:
Pins
MT-444E Faston
MT-444EL Faston
9 and 10
9 and 11
115 Vac
230 Vac
12 Vac/dc
24 Vac/dc
DIGITAL REFRIGERATION
CONTROLLER
Control
functions
shutdown
Functions
lock
Serial
Programming
Protection
level
On/off
light
IP 65
FRONT
Power-saving
mode
Connector
for quick
coupling
Buzzer
Approximate consumption
3.4 VA
NEW CONNECTION SYSTEM (QUICK COUPLING):
FASTON and PUSH-IN FAST
CONNECTION:
- Hold the wire near its end and insert it into the
desired slot.
- If necessary, press the bottom to assist the
connection.
DISCONNECT:
- To disconnect the cord, press the bottom and
remove it.
NOTE:
- In the connectors 1 to 6 the maximum wire
diameter that can be used is 1,5mm².
- The wires must be tinned or use Rocket Pin
terminals with a maximum diameter of 0,75mm².
BOTTOM
WIRE INPUT
The wire should be picked
in 5 mm and tinned.
Terminal Rocket Pin.
7. FIXING PROCEDURE
a)
Cutout the panel plate (Image V - item 13) where the controller will be fixed, with dimensions
X = 71±0,5 mm and Y = 29±0,5 mm;
b)
Remove the side locks (Image VI - item 13): To do this, squeeze the elliptical central part (with the
Logo Full Gauge Controls) and move the latches back;
c)
Pass the wires through the cutout of the plate (image VII - Item 13) and make the electrical installation
as described in item 6;
d)
Insert the controller into the panel cutout, from the outside in;
e)
Replace the latches and push then until they are pressed against the panel, securing the controller to
the housing (see arrow in Figure VI - item 13);
f)
Adjust the parameters as described in item 9.
WARNING:
for installations requiring liquid-tight sealing, the cut-off for the installation of the
controller should be at must 70.5x29mm. The side latches must be secured so that they press
the rubber sealing to prevent infiltration between the cutout and the controller.
Vinyl protector - Image IX (item 13)
Protects the controller should when installed in a place with splashing water, such as in refrigerated
counters. This adhesive vinyl accompanies the instrument, on the packaging.
IMPORTANT:
Apply only after completing electrical connections.
a)
Retract the lateral locks (Image VI - item 13);
b)
Remove the protective film from the adhesive side of the vinyl;
c)
Apply the vinyl over the whole top, folding the flaps, as indicated by the arrows - Image IX (item 13);
d)
Reinstall the latches.
NOTE:
The vinyl is transparent, allowing to visualize the electric scheme of the instrument.
Image I - Connection 115 Vac
Image II - Connection 230 Vac
Image III - Connection 12 Vac/dc
Image IV - Connection 24 Vac/dc
3
4 5 6
7
8
9
10 11 12 13 14
DIG
DEFR
LIGHT
115 Vac
S1
S2
COMP
FAN
1
2
3
4 5 6
7
8
9
10 11 12 13 14
DIG
DEFR
LIGHT
230 Vac
S1
S2
COMP
FAN
1
2
3
4 5 6
7
8
9
10 11 12 13 14
12 Vac/dc
Power
supply
DEFR
LIGHT
COMP
FAN
1
2
DIG
S1
S2
3
4 5 6
7
8
9
10 11 12 13 14
24 Vac/dc
Power
supply
DEFR
LIGHT
COMP
FAN
1
2
DIG
S1
S2
MT444EF
AST
ONV01-03T
-16719
MT-444
e
Faston
MT-444
e
MT-444
e
E251415
