Ver.08
MT-512Ri LOG
DIGITAL CONTROLLER FOR COOLI NG WITH
NATURAL DEFROST THROUGH COMP RESSOR
SHUTDOWN AND INTERN AL DATALOGGER
1. DESCRIPTION
The MT-512Ri LOG is a temperature controller and indicator, with a joined cyclical timer. Controls
cooling and defrost through compressor shutdowns. It also has an internal datalogger and a serial
®
output for communication with the SITRAD .
Product complies with NSF (United States).
2. APPLICATIONS
• Counters
• Cooled chambers
3. TECHNICAL SPECIFICATION
- Power supply: MT-512Ri LOG 115 or 230 Vac ±10%(50/60 Hz)
MT-512RiL LOG 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
4. CONFIGURATIONS
4.1 - control temperature adjust (SETPOINT)
- Press for 2 seconds until appears 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 - To enter the function menu
Press and, at the same time for 2 seconds until appears, letting off on it instantly. When
appears, press (short touch) and enter the code (123) through the keys and to confirm
press the key . Through the keys and access the other functions and do the same to adjust
them. To leave the menu and return to normal operation, press (Long touch) until appears.
4.3 - Functions
Entry of access code
Advanced configuration functions
Adjustment of clock and date
- Operating temperature: 0 to 50 ºC / 32 to 122°F
- Operating humidity: 10 to 90% RH (without condensation)
SET
SET
SET
SET
SET
4.4 - Parameters table
Description
Fun
Datalogger operation mode
Indication offset
Minimum setpoint allowed for the end user
Maximum setpoint allowed for the end user
Control differential (hysteresis)
Delay to turn the cooling output on
Cooling time
Defrosting time
Initial state up on energizing the instrument
Indication of the temperature locked during defrost
Delay on the activation of the instrument
Additional time at the end of the first cycle
Datalogger sampling interval
Variation of the temperature to force data recording
Variation of the output to force data recording
Memory overwriting?
Address of the instrument on the network RS-485
(defrosts interval)
Min
Max
Unit
Default
0
-5.0 / -9
-50 / -58
-50 / -58
0.1 / 1
0
1
0
0 - cooling
0 - no
0
0
1
0 / 0
0
0 - no
001
2
5.0 / 9
75.0 / 167
75.0 / 167
20.0 / 40
999
999
999
1 - defrost
1 - yes
240
240
999
10.0 / 17
1
1 - yes
247
-
°C / °F
°C / °F
°C / °F
°C / °F
sec.
min.
min.
-
-
min.
min.
sec
°C / °F
-
-
-
2
0 / 0
-50.0 / -58
75.0 / 167
1.0 / 2
20
240
30
0 - cooling
0 - no
0
0
30
0 / 0
0
1 - yes
1
5. PARAMETERS DESCRIPTION
Datalogger operation mode
This indicates how the data storage device operates:
Always OFF
Always ON
Manual operation
Offset indication
Allows it to compensate for eventual temperature misreading, usually due to a sensor replacement.
Minimum setpoint allowed to the end user
Electronic limit whose purpose is prevent that too low setpoint temperatures are regulated.
Maximum setpoint allowed to the end user
Electronic limit whose purpose is prevent that too high setpoint temperatures are regulated.
Control differential (hysteresis)
It is the difference of temperature (hysteresis) between to turn OFF and turn ON the refrigeration output.
Delay to turn the cooling output on
cooling output
Cooling time
Defrosting time
Initial state up on energizing the instrumen
Indication of the temperature locked during defrost
It is the minimum time that will keep on, it means, space of time between the last drive and
the next stop.
(defrosts interval)
It is the time which compressor will turn on and turn off only by sensor temperature. After passed this
time, the controller will enter in defrost mode.
It is the minimum time that the cooling output will keep off to make natural defrost. After passed this time,
the controller will enter in cooling mode.
Indicates what mode the controller will work when turned on :
Cooling
Defrost
This function prevents the visualization of temperature elevation during defrost, maintaining the last
temperature indication prior to defrost. At the beginning of the refrigeration cycle, a normal temperature
indication will again take place after fan delay.
No
Yes
When the instrument is powered on, its control is kept disabled during a time, delaying the start of process.
During this time, it works only as temperature indicator.
Complement time at the first refrigeration cycle to certify that the first defrost cycle do not be started very
early.
temperature and the cooling outputs status.
Indicates whether the change in the cooling output will force the recording of data in memory regardless
of the time of sampling set in F13:
Delay on the activation of the instrument
Additional time at the end of the first cycle
Datalogger sampling interval
Time period in which the controller will register a sample of the
Variation of the temperature to force data recording
Temperature difference to forces the recording of data in the memory, independently of the sampling time
configured at F13. To desable this function, just decrease the value until the message appears in
the display.
Variation of the output to force data recording
6. FUNCTIONS WITH FACILITATED ACCESS
6.1 - 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 to be displayed.
OFF
ON
Memory overwriting?
This allows you to start overwriting data from datalogger memory beginning when the memory is full.
This prevents the latest data recorded from equipment being erased first.
No
Yes
Address of the instrument on the network RS-485
®
This is the device address for communication with Sitrad software. Note: You cannot have two or more
devices with the same address in the network.
6.3 - Clearing datalogger memory:
Press the and keys for 4 seconds to display . The display shows . If you
don't want to clear the memory press . To clear the memory press until is displayed and
press to confirm and exit the function.
SET
SET
SET
6.2 -
ou can turn theinternal recording ON or OFF by pressing
for seconds The message is displayed followed by the message (datalogger )
and (datalogger ). If the parameter F15 is configured with the values or the
messages or will be displayed accordingly.
Manual datalogger activation
Y temperature data (datalogger) or
10 .
MT512LOGV08-05T-11157
COMPONENT
6.4 - Viewing current date and time:
You can press the key shortly to view the date and time set in the controller. The display shows the
current day, month, year, hours and minutes, in this order:
Ex: 03/17/2006 12h43min
SET
Hours
Minutes
Day
Month
Year
6.5 - Manual defrost:
- To change from “cooling” to “defrost” or vice-versa, irrespective of the programming, hold key in
for four seconds, until or appears in the display.
To visualize the status and the elapsed time, press .
Initial delay Refrigeration Defrosting
7. SIGNALLING
REFRIG - Cooling output on
DEFROST - Performing natural defrost
- Sensor disconnected or temperature out of the specified range.
8. 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 will appear. Press
to choose between or and confirm. After selecting the unit the 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.
- Datalogger memory full alarm
- Configuration parameters deprogrammed or out of range
SET
SET
9. WIRING DIAGRAN
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.
Power
supply
Load
COMMON
NO
NC
1
2
3
4
5
6
7
8
9
10
11
12
REFRIG
0
72 mm
29 mm
Serial communication
RS-485
Load
supply
Dimension of the clipping for
setting of the instrument
in panel
7 - 8
7 - 9
115V
230V
12V
24V
115 V~
(12 V~)
230 V~
(24 V~)
MT-512Ri LOG
MT-512RiL LOG
Sensor
To the terminal of
the distribution box
Above the current specified
use contactor
A
B
Integrating Controllers, RS-485 Serial Interface and Computer
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
Suppresor
A1
A2
A1 and A2 are the
contactor coil terminals.
Schematic for the connection of supresors to
direct activation loads
Load
Suppresor
For direct activation the maximum
specified current should be taken
into consideration.
A
A
B B
AB
A
B
OUT
1
OUT 2
OUT 3
PCT-400R plus
OUT 4
ALMR
A
A
B B
AB
A
B
A
A
B B
AB
A
B
A
A
B B
AB
A
A
B B
A B
PUMP
AUX
1
AUX 2
MICROSOL II plus
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 , that must be connected with the terminal A of the
Interface. Repeat the action for terminals B and , being the cable shield.
onnecting block
the terminal of distribution box must be connected to the respective terminals of
each instrument.
ENVIRONMENTAL INFORMATION
Package:
The packages material are 100% recyclable. Just dispose it through specialized
recyclers.
Products:
The electro components of Full Gauge controllers can be recycled or reused if it is
disassembled for specialized companies.
Disposal:
Do not burn or throw in domestic garbage the controllers which have reached the end-oflife. Observe the respectively law in your region concerning the environmental
responsible manner of dispose its devices. In case of any doubts, contact Full Gauge
controls for assistance.
PROTECTIVE VINYL:
This adhesive vinyl (included inside the packing) protects the instruments against
water drippings, as in commercial refrigerators, for example.
Do the application after finishing the electrical connections.
Remove the protective paper
and apply the vinyl on the entire
superior part of the device,
folding the flaps as indicated by
the arrows.
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