
Ver.08
MT-512Ri LOG
DIGITAL CONTROLLER FOR COOLING WITH
NATURAL DEFROST THROUGH COMPRESSOR
SHUTDOWN AND INTERNAL DATALOGGER
MT512LOGV08-02T-11157
1. DESCRIPTION
2. APPLICATIONS
3. TECHNICAL SPECIFICATION
The 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 CE (European Union) and UL Inc. (United States and Canada).
• Counters
• Cooled chambers
MT-512Ri LOG 115 or 230 Vac ±10%(50/60 Hz)
MT-512RiL LOG 12 or 24 Vac/dc
-50 to 75.0ºC / -58 to 167°F
NO 16(8)A/250Vac 1HP
NC 8A/250Vac
71 x 28 x 71mm
MT-512Ri LOG
®
- Power supply:
- Control temperature:
- Load current:
- Dimensions:
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.
- Operating temperature:
- Operating humidity:
0 to 50 ºC / 32 to 122°F
10 to 90% RH (without condensation)
SET
SET
4.2 - 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
Datalogger sampling interval
Variation of the temperature to force data recording
Variation of the output force data recording
Memory overwriting
Address of the instrument on the network RS-485
Additional time at the end of the first cycle
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
001
0 - no
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
247
1 - yes
-
°C / °F
sec.
min.
min.
-
-
min.
min.
sec
-
-
-
°C / °F
°C / °F
°C / °F
°C / °F
2
0 / 0
-50.0 / -58
75.0 / 167
1.0 / 2
20
240
30
0
0
30
0 / 0
0
1
0 - cooling
0 - no
1 - yes
8. WIRING DIAGRAN
Note: The length of the sensor cable may be increased by the user up to 200 meters, using a 2 x 24AWG
cable. For immersion in water, use thermometric well.
Power
supply
Load
COMMON
NO
NC
12345678910 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
A B
RS-485 Network
RS-485 Serial Interface
®
Device used to establish the
connection Full Gauge Controls’
instruments with the Sitrad .
Instrument
RS-485 Network
External
mesh
®
Integrating Controllers, RS-485 Serial Interface and Computer
A
B
PUMP AUX1
AUX2
MICROSOLII plus
AA
B B
AB
OUT1OUT2
OUT3
PCT-400R plus
OUT4 ALMR
AA
B B
AB
AA
B B
AB
A
BA
B
AA
B B
AB
Serial interface
RS-485
Full Gauge
MOD 64
AA
B B
AB
terminal
grounded
Distribution Box
Used to connect more than one instrument to the Interface.The wire's connections must
be made in agreement with the following rules: terminal of the instrument connects to
the terminal of the distribution box, that must be connected with the terminal of the
Interface. Repeat the action for terminals and , being the cable shield.
A
A A
B
The terminal of distribution box must be connected to the respective terminals of
each instrument.
4.3 - Parameters Alteration
5. FUNCTIONS WITH FACILITATED ACCESS
5.1 - Maximum and minimum temperature logs
-Access function “F01” by simultaneously pressing keys and for 2 seconds.
When the message appears release the keys and wait for the indication. When the
indication appears on the display press the key and use and to enter the access code
(123) When ready press the button to confirm.
- Use keys and to access the desired function.
- After selecting the function, press (press once quickly) to view the value configured for that
function.
- Use the and 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.
Press the key. The minimum and maximum temperatures registered will appear.
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.
Note:
SET
SET
SET
SET
SET
5.3 - 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
5.2 - Manual datalogger activation
ou can turn the internal 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.
Y temperature data (datalogger) or
10 .
5.4 - 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
Day
Month
Year
5.5 - Manual defrost:
6. SIGNALLING
7. SELECTION OF THE UNIT (Cº / Fº)
- 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
- Cooling output on
- Performing natural defrost
- Sensor disconnected or temperature out of the specified range.
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.
REFRIG
DEFROST
SET
SET