Ver.11
MT-512Ri
1. DESCRIPTION
The
MT-512Ri
is a temperature controller and gauge, with adjustable settings for cooling and
defrosting processes. It controls cooling and defrost by stopping the compressor. The controller uses an
intelligent system to lock the keys and deactivate the control functions.
( )
*
Th
Product complies with CE (European Union), NSF (United States) and UL Inc. (United States and
Canada).
2. APPLICATIONS
• Counters
• Cooled chambers
3. TECHNICAL SPECIFICATION
- Power supply:
MT-512Ri 115 or 230 Vac 10%(50/60 Hz)
MT-512RiL 12 or 24 Vac/dc
- Control temperature:
-50 to 105ºC (-58 to 221°F)
- Maximum 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)
is instrument can measure and control up to 200ºC temperatures, since used with silicone cable
sensor (ex.: SB59).
→
→
→
→
±
( )
*
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
>
or
<
keys in order to change the value and, when ready, press
@
to record.
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
4.2 - Parameters table
Configuration parameters protected by access code.
[F01]
[F02]
[F03]
[F04]
[F05]
[F06]
[F07]
[F08]
[F09]
[F10]
[F11]
[F12]
[F13]
[F14]
[F15]
[F16]
Fun
CELSIUS
FAHRENHEIT
Access code: 123 (one hundred and twenty three)
Indication offset
Minimum setpoint allowed for the end user
Maximum setpoint allowed for the end user
Control differential (hysteresis)
Delay in restarting the cooling operation
Cooling time
Defrosting time (*)
Initial state when turning the device on again
Indication of the temperature locked during defrost (**)
Delay on the activation of the instrument
Additional time at the end of the first cycle
Situation of the compressor with the damaged sensor
Intensity of the digital filter (***)
Time to Key blocker
Deactivation of the control functions
-
5.0
200
200
20.0
999
999
999
1-defrost
1-yes
240
240
1-on
9
60
2
-
°C
°C
°C
°C
sec.
min.
min.
-
-
min.
min.
-
-
sec.
-
-
-9
-58
-58
1
0
1
0
0-cooling
0-no
0
0
0-off
0
14-no
0
-
9
392
392
40
999
999
999
1-defrost
1-yes
240
240
1-on
9
60
2
-
°F
°F
°F
°F
sec.
min.
min.
-
-
min.
min.
-
-
sec.
-
-
-5.0
-50
-50
0.1
0
1
0
0-cooling
0-no
0
0
0-off
0
14-no
0
5.2 - Manual Defrost
- To change from “cooling” to “defrost” or vice-versa, irrespective of the programming, hold
<
key in
for four seconds, until
[def][Off]
or
[def][,on]
appears in the diplay.
5.3 - Processes Viewing
To visualize the status and the elapsed time, press
>
.
[del]
→
Initial delay ,
[ref]
→
Refrigeration,
[def]
→
Defrosting.
If the control functions are turned off, the
MT-512Ri
will work as a simple temperature gauge,
without controlling the cooling and defrost. Therefore, the status and the time elapsed will not be
displayed.
E251415
REFRIG
MT-512Ri
DEFROST
5.4 - Key blocking
For security reasons this controller permits blocking the key settings.
With this feature enabled, the setpoint and further settings are protected against undue alterations.
After key blocking, the user can only see the setpoint and settings, when trying to change the settings
the controller will display the message
[LOC]
.
To proceed with the key blocking it is required that the parameter "
F15 -Time to key Blocker
" is
configured with a different value than" 14-No " (15-60 seconds).
If F15 is set as "No" the key lock is not allowed.
To block, hold the key
>
for the time programmed in function F15.
The controller will display the message
[LOC]
+
[On,]
.
To unblock, turn off the controller and turn it back on holding the key
>
for 10 seconds untill the
message
[LOC]
+
[Off]
be displayed.
5.5 - Deactivation of the control functions
When the control functions are turned off, the controller starts to operate as a temperature gauge
only and the output switch is turned off.
The method used to turn off the control functions depends on the configuration of the parameter
"
F16- Deactivation of the control functions"
:
.
[,0,]
- Does not allow the control functions to be turned off;
[,1,]
- Allows the control functions to be turned on and off only if the keys are not
locked;
[,2,]
- Allows the control functions to be turned on and off even if the keys are
locked;
To turn off the control functions, press the
<
key for 10 seconds until the message
[CtL]
is
displayed. When the key is released, the message
[OFF]
will be displayed. With the control
functions turned off, the message
[Off]
and the temperature sensor will be displayed
alternately.
To turn on the control functions again, press the
<
key for 10 seconds until the message
[CtL]
is displayed. When the key is released, the message
[,On]
will be displayed.
NOTE:
When the control functions are turned on again, the MT-512Ri will continue to follow the
functions "
F06 - Delay in restarting the cooling operation
" and "
F09 - Initial state when
turning the device on again
".
6. SIGNALLING
REFRIG
-
Cooling output on
DEFROST
-
Performing natural defrost
[err]
- Sensor disconnected or temperature out of the specified range.
[OFF]
- Control function turned off
[def][,On]
- Activation of defrost cycle manually
[def][OFF]
- Activation of refrigeration cycle manually
[LOC][,On]
- Keypad locked
[LOC][OFF]
- Keypad unlocked
DIGITAL CONTROLLER FOR COOLING
WITH NATURAL DEFROST THROUGH
COMPRESSOR SHUTDOWN
Unit Standard
Description
Min
Max
Unit Standard
Min
Max
* Heating operation mode
-
To make the instrument work in heating operation mode, simply adjust the F08 function with
minimum value until
[Hot]
appears.
** Frozen indication on display -
If F10 is enabled, the indication is only released in the next cooling cycle after the temperature
reaches that "locked" value again or after 15 minutes in refrigeration (as security).
***
This filter aims at simulating an increase of the mass of sensor , thus increasing its response time (thermal inertia). The larger the
value adjusted in this function, the longest the response time of sensor.
A typical application requiring this filter is the freezer for ice cream or frozen goods, because when the door is opened a hot air mass
reaches the sensor directly, causing the indication of the measured temperature to rise quickly and the compressor to be activated
unnecessarily many times.
4.3 - Parameters alteration
- Access function “F01” by simultaneously pressing keys
>
and
<
for 2 seconds.
When the message
[fun]
appears release the keys, when the indication
[f01]
appears on the
display press the
@
key and use
>
or
<
to enter the access code (123) When ready press the
@
button to confirm.
- If the keys are locked, the controller will show the message
[LOC]
in the display upon pressing the
>
or
<
key and will not permit any change in value
>
or
<
@
>
or
<
@
@
[---]
- Use keys
to access the desired function.
- After selecting the function, press
(press once quickly) to view the value configured for that
function.
- Use the
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.
7. SELECTION OF THE UNIT (ºC / ºF)
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.
-
0
-50
75.0
1.0
20
240
30
0-cooling
0-no
0
0
0-off
0
14-no
0
-
0
-58
167
2
20
240
30
0-cooling
0-no
0
0
0-off
0
14-no
0
MT512RIV1
1-01T
-13387
COMPONENT
