Full Gauge Controls MT-512Ri plus Manual

1. DESCRIPTION
The MT-512Ri plus is a temperature controller and indicator, with a joined cyclical timer. Controls
cooling and defrost through compressor shutdowns. It also has a serial output for communication with
the SITRAD . ®
Product complies with CE (European Union),
Canada).
2. APPLICATIONS
• Counters
• Cooled chambers
3. TECHNICAL SPECIFICATION
- Power supply: MT-512Ri plus 115 or 230 Vac 10%(50/60 Hz)
MT-512RiL plus 12 or 24 Vac/dc
- Control temperature: -50 to 75.0ºC / -58 to 167°F
- Load current: NO 16(8)A/250Vac 1HP
NC 8A/250Vac
- Dimensions: 71 x 28 x 71mm
- Operating temperature: 0 to 50 ºC / 32 to 122°F
- Operating humidity: 10 to 90% RH (without condensation)
CLASSIFICATION ACCORDING TO IEC60730-2-9 STANDARD:
- Temperature limit of the installation surface: 50°C / 122°F
- Type of construction: Built-in electronic controller
- Automatic action: Type 1
- Control of pollution: Level 2
- Impulse voltage: 1,5kV
- Temperature for the test of sphere pressure: 75°C and 125°C / 167°F and 257°F
- Insulation: Class II
4. CONFIGURATIONS
4.1 - control temperature adjust (SETPOINT)
- Press @ for 2 seconds until appears [SET] and then release the key.
The set control temperature will appear.
- Use the > and < keys in order to change the value and, when ready, press @ to record.
4.2 - Parameters table
Fun Descripion
[F01]
Access code: 123 (one hundred and twenty three)
[F02] Indication offset
[F03]
Minimum setpoint allowed for the end user
[F04]
Maximum setpoint allowed for the end user
[F05]
Control differential (hysteresis)
[F06]
Delay to turn the cooling output on
[F07]
Cooling time
[F08]
Defrosting time
[F09]
Initial state up on energizing the instrument
[F10]
Indication of the temperature locked during defrost
[F11]
Delay on the activation of the instrument
[F12]
Additional time at the end of the first cycle
[F13]
Address of the instrument on the network RS-485
4.3 - Parameters Alteration
- Access function "F01" by simultaneously pressing keys > and < for 2 seconds.
When the message [FuN]appears release the keys and wait for the[F01] indication. When the
indication appears on the display press the @ key and use > or < to enter the access code
(123) When ready press the @ button to confirm.
- Use keys > or < to access the desired function.
- After selecting the function, press @ (press once quickly) to view the value configured for that
function.
- Use the > or < keys to change the value and, when ready, press @ to memorize the
configured value and return to the function menu.
- To exit the menu and return to the normal operation (temperature indication), press @ (hold it in)
until [---] appears.
5. FUNCTIONS WITH FACILITATED ACCESS
5.1 - Maximum and minimum temperature logs
Press the < key. The minimum and maximum temperatures registered will appear.
Note: To restart the logs you just have to keep the < key pressed during the viewing of the minimum
and maximum temperatures until [rst] to be displayed.
MT-512Ri plus
DIGITAL CONTROLLER FOR COOLING
WITH NATURAL DEFROST THROUGH
COMPRESSOR SHUTDOWN
Ver. 09
NSF (United States) and UL Inc. (United States and
±
CELSIUS FAHRENHEIT
Min Max Unid Standard Padrão Min Max
- - - - - -
-5.0 5.0 °C 00.0 -9 9
-50 75.0 °C -50 -58 167
-50 75.0 °C 75.0 -58 167
0.1 20.0 °C 01.0 1 40
0 999 sec. 020 0 999
1 999 min. 240 1 999
0 999 min. 030 0 999
0 - cooling. 1 - defrost - 0 0 - cooling. 1 - defrost
0 - no 1 - yes - 0 0 - no 1 - yes
0 240 min. 000 0 240
0 240 min. 000 0 240
001 247 - 001 001 247
Manual defrost:
- To change from "cooling" to "defrost" or vice-versa, irrespective of the programming, hold < key in
for four seconds, until [def]ou [ref] appears in the display.
To visualize the status and the elapsed time, press >.
[del]
Initial delay
6. SIGNALLING
REFRIG - Cooling output on
DEFROST - Performing natural defrost
[Err] - Sensor disconnected or temperature out of the specified range.
7. SELECTION OF THE UNIT (Cº / Fº)
In order to define the unit that the instrument will operate in, enter function "F01" with the access code
"231" and confirm with the @ key. Press the < key and the indication [Uni]will appear. Press
@ to choose between [,=C] or [,=F] and confirm. After selecting the unit the [faC] message
will appear, and the instrument will return to the function "F01". Every time that the unit is changed, the
parameters should be reconfigured, since they assume the "standard" values.
8. WIRING DIAGRAN
1 2 3 4
A B
To the terminal
the distribution box
MT-512Ri plus MT-512RiL plus
7 - 8 115V
7 - 9 230V
Note: The length of the sensor cable may be increased by the user up to 200 meters, using a 2 x 24 AWG
cable. For immersion in water, use thermometric well.
9-INTEGRATING CONTROLLERS, RS-485 SERIAL INTERFACE
AND COMPUTER
Unid Standard Padrão
- -
°F 000
°F -58
°F 167
°F 002
sec. 020
min. 240
min. 030
- 0
- 0
A A
min. 000
B B
A B
min. 000
A
B
A B
- 001
B
Connecting Block for Serial Communication
Used to connect more than one instrument to the Interface. The wire's connections must
be made in agreement with the following rules: terminal A of the instrument connects to
the terminal A of the c
onnecting block
Interface. Repeat the action for terminals B and
the terminal of distribution box must be connected to the respective terminals
each instrument.
IMPORTANT
According to the chapters of norm IEC 60364:
1: Install protector against overvoltage on the power supply.
2: Sensor cables and signal cables of the computer may be joined, but not in the same electric conduit
through which the electric input and the activation of the loads run.
3: Install transient suppresors (RC filters) parallel to the loads as to increase the product life of the
relays.
Schematic for the connection of supresors
to contactors
A1
[ref]
Refrigeration
REFRIG
5 6 7 8 9 10 11 12
0 115 V~ 230 V~
(12 V~) (24 V~)
Load
Power
supply
Load
supply
Above the current specified
of
use contactor
12V
24V
A A A A A
B B B B B
A B A B
A B A B A
, that must be connected with the terminal A of the
, being the cable shield.
Schematic for the connection of supresors to
direct activation loads
A1 and A2 are the
contactor coil terminals.
A2
E251415
COMPONENT
[def]
Defrosting
Dimension of the clipping for
setting of the instrument
in panel
72 mm
A A
B B
A B
of
For direct activation the maximum
Load
specified current should be taken
into consideration.