Full Gauge Controls MT-512E 2HP, MT-512EL 2HP Product Manual

evolution

V

er.13

DIGITAL CONTROLLER AND INDICATOR FOR

HEATING OR COOLING WITH NATURAL

DEFROST THROUGH COMPRESSOR SHUTDOWN

MT-512 e 2HP

Control functions

shutdown

Functions
lockdown

Serial

programming

Protection

level

Manual
defrost

IP 65

FRONT

Image I: MT-512E 2HP - 115Vac

1. DESCRIPTION

2. SAFETY RECOMMENDATIONS

3.

4. TECHNICAL SPECIFICATIONS

Periodical defrost may be performed with MT-512e 2HP by stopping the compressor (natural
defrost) and forcing defrost manually. It is provided with a powerful 16A relay for actuating loads of up to
2HP, in addition to a command output combined with a timer for programming refrigeration and
defrosting times. Another feature available is the turning off of the control functions, making the

MT-512e 2HP operate only as a temperature indicator. It is also provided with a configurable
digital filter, which has the purpose of simulating mass increase in the environment sensor, thus
increasing its response time, i.e., it renders the sensor response slower (delay). Through an intelligent
function blocking system, it prevents unauthorized personnel from changing the control parameters.

MT-512e 2HP can also be set for heating.
Product conforming to UL Inc. (United States and Canada) and NSF . (United States)

- 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 (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.

• Cold storages

•

• Industrial heating / Cooling equipment

• Any other type of equipment requiring precise temperature control

Personal Protective Equipmenet

Reach-In Coolers / Stand Up Coolers

APPLICATIONS

Control temperature (**)

Resolution

5. INDICATIONS AND KEYS

Upper Key

MT-512e 2HP

Lower Key

Set Key

Menu Key (Flatec)

User-friendly

Cooling indication LED

Heating indication LED

Defrost indication LED

Temperature unit indication LED

Control functions OFF indication LED

Functions lockdown indication LED

- 50 to 105°C (-58 to 221°F)

0.1°C (-10 to 100°C) and 1°C at the rest of the range

115 Vac

Image III: MT-512EL 2HP - 12Vac/dc

Power supply

MT-512E 2HP: 115 or 230 Vac * (50/60 Hz)±10%
MT-512EL 2HP: 12 or 24 Vdc or Vac * +10%

Maximum load current (***)

16 A for resistive-type loads and 12 A for inductive-type
loads

Maximum load power (***)

2HP

Operating temperature

0 to 50°C / 32 to 122°F

Operating humidity

10 to 90% RH (without condensation)

(*) Admissible variation in relation to the voltage rating.
(**) This instrument measures and controls temperatures of up to , using the silicone sensor cable SB59
(sold separately).
(***) For higher loads, use contactor.

200°C/392°F

Protection level
Dimensions (mm)

Cutout dimensions (mm)

IP 65 (frontal)

76 x 34 x 77 mm (Width x Height x Depth)

X = 71±0,5 Y = 29±0,5 (see image V)

6. WIRING DIAGRAM

6.1. Identifications (see Images I to IV)

- Image I: MT-512E 2HP, supplied at 115 Vac.

- Image II: MT-512E 2HP, supplied at 230 Vac.

- Image III: MT-512EL 2HP, supplied at 12 Vac/dc.

- Image IV: MT-512EL 2HP, supplied at 24 Vac/dc.

Image II: MT-512E 2HP - 230 Vac

230 Vac

POWER

12Vac/dc

Image IV: MT-512EL 2HP - 24Vac/dc

POWER

24Vac/dc

6.2. Temperature sensor connection

- Connect the sensor wires to terminals ‘1 and 2’: 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.

- For immersion in water, use a thermowell (Image VI - item 12), available in the Full Gauge Controls
product line (sold separately).

S u r ge P r ot ec t i v e
Device (SPD)
(sold separately)

W ir i ng d ia g ra m f or
in sta lat ion o f S PD in
magnectic contactor

A1 and A2 are the terminals of
the contactor coil.

SPD

A1

A2

W ir i ng d ia g ra m f or
instalation of SPD in line
with loads

For direct drive take in to
consideration the specified
maximum current.

LOAD

IMPORTANT

SCREWDRIVER SLOT 3/32''(2.4mm) FOR ADJUSTMENTS IN THE SIGNAL TERMINALS;
SCREWDRIVER PHILLIPS #1 FOR ADJUSTMENTS IN THE POWER TERMINALS;

THE USE OF APPROPRIATE TOOLS IS ESSENTIAL TO AVOID DAMAGE IN THE CONNECTION AT INSTRUMENT
TERMINALS:

CONTROLLER

WIRING
TERMINALS

TEMPERATURE
SENSOR

WIRING
TERMINALS

LOAD

CONTROLLER

WIRING
TERMINALS

WIRING
TERMINALS

TEMPERATURE
SENSOR

LOAD

CONTROLLER

WIRING
TERMINALS

WIRING
TERMINALS

TEMPERATURE
SENSOR

LOAD

CONTROLLER

WIRING
TERMINALS

WIRING
TERMINALS

TEMPERATURE
SENSOR

LOAD

SPD

MT512E2HP13-02T-15381

POWER
GRID

}

POWER
GRID

}

POWER
GRID

}

POWER
GRID

}

E251415

COMPONENT

Have this manual in the palm of

your hand by FG Finder application.

6.3. Controller power supply

Use the pins according to table below, considering the set version:

6.4. 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.

a) Cut out the panel plate (Image V - item 12) where the controller shall be fastened, with sizes
X = 71±0.5 mm and Y = 29±0.5 mm;
b) Remove side locks (Image VII - item 12): to do that, compress the central elliptical part (with the Full
Gauge Controls logo) and displace the locks backwards;

c) Introduce the controller in the notch made on the panel, inwards;
d) Place the locks again and then displace them until they compress into the panel, fastening the

controller to the housing (see arrow indication in Image VII - item 12);

e) Perform the electric installation as described in item 6;
f) Adjust the parameters as described in item 8.
ATTENTION: for installations requiring liquid tight sealing, the notch sizes for the controller
installation should be no more than 70.5x29mm. The side locks should be fastened so that they
press the sealing rubber avoiding infiltration between the notch and the controller.
Protector vinyl - Image VIII (item 12)

It protects the controller when installed at a site subject to water spills, such as refrigerated counters.
This adhesive vinyl is supplied with the instrument in the package.

IMPORTANT: Make the application only after completing the electrical connections.
a) Retreat the side locks (Image VII - item 12);
b) Remove the protective film from the adhesive vinyl face;
c) Apply the vinyl over the entire upper part, bending the flaps, as indicated by the arrows - Image VIII

(item 12);

d) Reinstall the locks.
NOTE: The vinyl is transparent, allowing visualization of the wiring system of the instrument.

8.1. Quick Access Menu Map

;(Flatec),

8.3.

7. FASTENING PROCEDURE

8. ADJUSTMENT OF THE SETPOINT AND PARAMETERS

By pressing it is possible to navigate through the function menus. For more details, see
chapter See the functions map below:

Pins MT-512E 2HP MT-512EL 2HP

9 and 10
9 and 11

115 Vac
230 Vac

12 Vac/dc
24 Vac/dc

;

FORCED DEFROST

;

FUNCTIONS LOCKDOWN

;

CONTROL FUNCTIONS
SHUTDOWN

ADJUSTING THE DESIRED
TEMPERATURE (SETPOINT)

;

EXIT FUNCTION

;

FUNCTION SELECTION

;

SHOW CURRENT PROCESS

;

ERASE MIN. AND MAX. VALUES

;

MIN. AND MAX. TEMPERATURE
RECORD

;

MT-512e 2HP MT-512e 2HP

MT-512e 2HP MT-512e 2HP

MT-512e 2HP MT-512 e 2HP

MT-512e 2HP MT-512e 2HP

MT-512e 2HP

8.3. Basic operations

8.3.1. Adjustment of the Setpoint (desired temperature)

Press the key/ for 2 seconds until the message [Set,] is displayed. Releasing the key will display
the control temperature currently adjusted.
Use the keys < or > to modify the value and press / for recording.
The desired temperature can also be changed by the facilitated menu (see map in item 8.1) or by the
function [,F02]: see item 8.4.2.

8.3.2. Manual Defrost

Manual defrost is activated by the facilitated menu. Press the key ;(short touch) until the message

[defr] (led @flashing) is displayed. Then press the key/(short touch) to select. The message
[defr][On,,] (led @on) will be displayed.
In order to disable the manual defrost, press the key ; (short touch) until the message[defr](led
@flashing) is displayed. Press the key / (short touch) to select. The message[defr][Off,] (led
@off) will be displayed.

The manual defrost process also can be activated/deactivated by pressing the key < for 4 seconds.

MT-512e 2HP

8.3.3. Function blocking

The activation of function blocking feature allows safety against undue alterations of the Setpoint and of
the other parameters. In this condition, when trying to alter the values, the message [LOC,] will be
displayed. However, the parameters can still be seen.
In order to perform the function blocking the parameter [,F20] (Time for function blocking) must be
set with the value above 14 (if below 15, [No,,] will be displayed, which means function blocking is
prevented).
With the key ; (short touch), select , then press / (short touch), and keep pressing the key >
until the message [LOC,] is displayed.
Releasing the key will display the message [On,,].

MT-512e 2HP

8.3.4. Turning the Control Functions Off

Turning the control functions off will make the controller start operating just as a temperature indicator
and the output relay remains off.
How the operation of turning the control functions off is made shall depend on the parameter [,F21]
setting (Turning the control functions off).
With the key ; (short touch), select and then press / (short touch) to confirm.

Soon the message [Ctrl][Off,] will be displayed and the temperature display will be alternated
with the message [Off,].
For turning the control functions on again, apply the same procedure used for turning off, selecting with
the key ; (short touch), . When pressing the key / the message [Ctrl][On,,] will be
displayed.

NOTE: When turning the control functions on again, the will continue to
respect the functions [,F09](Minimum output-off time) and [,F12] (initial status when
powering the instrument on).

Also is possible turn on/ turn off the control functions by pressing the key ; for 5 seconds.

MT-512e 2HP

MT-512e 2HP

8.3.5. Viewing the Processes

For viewing the status and the time elapsed, press > (short touch).
The controller will display the current process, which may be with the following messages:

[----]Control off
[DEL,]Initial delay
[REFR]Refrigeration
[HOT,]Heating
[DEFR]Defrost

Pressing the key < or also by the facilitated menu (see map in item 8.1) the message [rEg,] will be
displayed, and then the minimum and maximum temperatures will be recorded.
To delete the current minimum and maximum values, press the key ; (short touch) until the message
[CrEg] is displayed. Press the key/ to confirm.

8.3.7. Selection of Temperature Measurement Unit

For defining the unit with which the instrument will operate enter the function[,F01] with access code
231 and press the key / . Then, select the unit by pressing the keys > or <: the units [,=C,] or
[,=F,] will be displayed. Press the key / to confirm the selection. The indication corresponding to
the unit ({or}) will be displayed.

NOTE: Every time the unit is changed, the parameters should be reset, since they assume the
‘standard’ values of the parameter’s table.

8.3.6. Minimum and Maximum Temperature Recording

8.2. Quick access keys map

When the controller is on temperature display mode, the following keys serve as a shortcut for the
following functions:

Hold down for 2 seconds: setpoint adjustment.

Quick touch: current process display.

Quick touch: maximum and minimum temperatures display (record).

Pressed simultaneously: access to functions selection.

/

<

<

<

<

8.4. Advanced operations

- NOTE 1: The graph below illustrates the meaning of temperature-related parameters.

- NOTE 2: The access to all parameters is protected by the access code: see item 8.4.3 (F01).

Refrig.

Heat.

105°C (221°F)

*200°C (392°F)

-50°C (-58°F)

F02F04 F05

F06

*Only if a silicone sensor
cable is used (SB59)

To unblock, turn the controller off, and then turn it on again with the key > pressed. Keep the key
pressed until the message[LOC,]is displayed. After releasing it, the message[OFF,]will be
displayed.

Hold down for 5 seconds: turn on/turn off the control functions.

;