DIGITAL CONTROLLER FOR
REFRIGERATION AND DEFROST
TC-900Ri
power
4. CONFIGURATIONS
- Press for 2 seconds until appears , and release it after that. The adjusted operation
temperature will appear.
- Use and to change the value and then press to record it.
4.1 - Control temperature adjust (SETPOINT):
SET
SET
1. DESCRIPTION
TC-900Ri
power
is a control for low temperature ventilated units which automates defrosting
processes, providing great energy saving
2. APPLICATION
• Counters
• Refrigerating balconies
3. TECHNICAL SPECIFICATIONS
- Power supply:
TC-900Ri
power: 115 or 230Vac ±10%( 50/60 Hz)
TC-900RiL power: 12 or 24 Vac/dc
- Control temperature:
-50 to 75° C / -58 to 167°F
- Operating temperature:
0 to 40°C / 32 to 104°F
- Operating humidity:
10 to 90% RH (without condensation)
- Resolution:
0.1°C from -10 to 75°C and 1°C outside this range
/1°F in all range
- Load current (outputs):
COMP: 12(8)A/240Vac 1HP (compressor, solenoid valve or contactor)
DEFR: 10A / 240Vac 1/4HP (defrost resistance or hot gas)
FANS: 5(3)A / 240Vac 1/8HP (evaporator fans)
- Dimensions:
71 x 28 x 71mm
- Sensors:
S1: ambient sensor (black cable)
S2: evaporator sensor (gray cable)
. For cooling and defrosting, works with two sensors, one
being for ambient temperatura and the other fixed to the evaporador that controls defrost ending. With
the powerful 16-amp relay, directly controls compressors up to 1 HP. The defrost output has a 10A
current capacity, as well as also having Normally Closed (NC) contact avaiable. It also has indicators in
ºC and °F and digital filters, which have the purpose of simulating an increase in mass in the
environment sensor (S1), thus increasing its response time (thermal inertia) and preventing
unnecessary activations of the compressor.
Product complies with UL Inc. (United States and Canada) and NSF (United States).
4.2 - Parameters table
Description
Fun
Access code:123 (one hundred and twenty-three)
Control differential (hysteresis)
Offset indication for ambient sensor
Minimum setpoint allowed to the end user
Maximum setpoint allowed to the end user
Delay when the instrument is powered on
Act point of high ambient temperature alert
Refrigeration time (interval between defrosts)
Compressor delay after on (on - off)
Compressor delay after off (off - on)
Compressor status with detached ambient sensor (S1)
Defrost when the instrument is powered on
Evaporator temperature (S2) for end defrost
Maximum duration of defrost (for security)
Fan turned on during defrost
Defrost type
Min
Max
Unit
Standard
CELSIUS
FAHRENHEIT
-
0.1
-20.0
-50.0
-50.0
0
-50.0
1
0
0
0 - off
0 - no
-50.0
0=disable
0 - no
0 - electric
-
1
-36
-58
-58
0
-58
1
0
0
0 - off
0 - no
-58
0=disable
0 - no
0 - electric
-
20.0
20.0
75.0
75.0
30
75.0
999
999
999
1 - on
1 - yes
75.0
90
1 - yes
1 - hot gas
-
36
36
167
167
30
167
999
999
999
1 - on
1 - yes
167
90
1 - yes
1 - hot gas
-
º C
º C
º C
º C
min.
º C
min.
sec.
sec.
-
-
º C
min.
-
-
-
1.5
0
-50.0
75.0
0
40.0
240
0
0
1 - on
0 -no
40.0
45
0
0
-
°F
°F
°F
°F
min.
°F
min.
sec.
sec.
-
-
°F
min.
-
-
-
3
0
-58
167
0
104
240
0
0
1 - on
0 -no
104
45
0
0
Min
Max
Unit
Standard
4.3 - Parameters description
F01 - Access code (123)
To change the parameters it is necessary to use the access code.It is not necessary to use the access
code to visualize the adjusted parameters.
F02 - Control differential (hysteresis)
It is the difference of temperature (hysteresis) between to turn OFF and turn ON the refrigeration output.
Example: To control the temperature in 4.0°C with differential of 1.0°C. Soon, the refrigeration will be
turned off in 4.0°C and turned on again in 5.0°C (4.0 + 1.0)
F03 - Offset indication for ambient sensor
It allows to compensate eventual shunting lines in the reading of ambient temperature (S1) proceeding
from the exchange of the sensor or cable length alteration.
F04 - Minimum setpoint allowed to the end user
F05 - Maximum setpoint allowed to the end user
Electronic limits whose purpose is to prevent that too high or too low setpoint temperatures are
regulated.
F10 - Compressor delay after off (off-on)
It is the minimum time that compressor will keep off, it means, space of time between the last stop and
the next drive. It serves to alliviate the discharge pressure and to increase the time of useful life of the
compressor.
F11 - Compressor status with detached ambient sensor (S1)
If the ambient sensor (S1) will be damaged or outside the specified range, the compressor assumes the
configured status in this function.
Example: For counters of fruits, it is better to keep the compressor off. In counters of meat it is better to
keep the compressor on.
F12 - Defrost when the instrument is powered on
It makes possible the accomplishment of a defrost at the moment that controller is energized, for
example, in the return of electrical energy (in case of energy lack)
F13 - Evaporator temperature (S2) for end defrost
If the temperature in the evaporator (sensor S2) reaches the adjusted value, the end of defrost will be for
temperature. With this, the defrost process is optimized.
F06 - Delay when the instrument is powered on
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. It serves to prevent demand of electric
energy peaks, in case of lack or return of the same and when exists a lot of equipment connected on the
same net. For this, just adjust different times for each equipment. This delay may be of compressor or
defrost (when exist defrost on turn on).
F07 - Act point of high ambient temperature alert
If the ambient temperature (sensor S1) reaches this point during refrigeration, this will be signaled
visually through the indication blinking on display.
F08 - Refrigeration time (interval between defrosts)
It is the time which compressor will turn on and turn off only for ambient temperature and starts to be
counted when the fan is turned on , after fan-delay stage (fan return after draining).
F09 - Compressor delay after on (on-off)
It is the minimum time that compressor will keep on, it means, space of time between the last drive and
the next stop. It serves to prevent high voltage events in the electric network.
E251415
TC-900Ri
power
Ver.03
Locked temperature indication (S1) during defrost
Draining time (dripping of defrost water)
Evaporator temperature (S2) for fan return after draining
Maximum time of fan return after draining (fan-delay)
Fan on with compressor off (refrigeration)
Fan stopped for high temperature in the evaporator
Time to collect the gas before start
ing
the defrost
Intensity of the digital filter applied to the sensor 1 (0-OFF)
Time to Key blocker
0 - no
0
-50
0
0 - no
-50
0
0
14 - no
1 - yes
30
75.0
30
1 - yes
75.0
999
9
60
-
min.
º C
min.
-
º C
sec.
-
sec.
0 - no
0
-58
0
0 - no
-58
0
0
14 - no
1 - yes
30
167
30
1 - yes
167
999
9
60
-
min.
°F
min.
-
°F
sec.
-
sec.
0 - no
10
0
1
1 - yes
75.0
0
0
14 - no
0 - no
10
0
1
1 - yes
167
0
0
14 - no
TC900RIPWV03-04T
-12768
COMPONENT
