Full Gauge Controls Evolution TC-900E Power Manual page 2

Connection 12 Vac/dc
D1/S3 D2
5 6 7 8
9 10
1 2 3 4
12 Vac/dc
6.3.2 Fast Freezing
In the fast freezing mode the cooling output remains permanently activated, thus accelerating the
cooling or freezing process. This operating mode can be activated or deactivated in the quick access
menu through the [FASt] option or through an external switch connected to the digital input (F52 or
F53). It can also be deactivated automatically by low temperature (F33) or by time (F34). During
operation in the fast freezing mode, the compressor on indication flashes quickly and defrost keeps
happening. If, when activating the fast freezing mode, the controller identifies that there is a defrost
scheduled to start by time in this period, the defrost will be performed immediately before entering the
fast freezing mode.
6.3.3 Economic setpoint (SPE)
The [SP-E] provides the system with greater economy by using more flexible parameters for
temperature control (F27- Economic Setpoint and F28 - Control Differential). When active, the [ECO,]
message is displayed alternating with the temperature and other messages. The operation in economy
mode can be activated or deactivated through the commands:
Function
Command
Closed door time to activate
F29
S3-S1 temperature difference to deactivate
F30
S3-S1 temperature difference to activate
F31
Maximum time in economy mode
F32
Maximum time in economy mode =0(no)
F32
External key (digital input)
F52 / F53
Open door indication (digital input)
F52 / F53
Action through quick access menu ([ECO,])
-
Error in ambient temperature reading (S1)
-
When switching on the instrument
-
6.3.4 Manual defrost
The defrost process can be activated/deactivated manually in the quick access menu through the
<
[defr]
or pressing the for 4 seconds or using external switch connected to digital input
F53). Activation or deactivation will be indicated by the messages [defr][On,,] or
[defr][OFF,] respectively.
6.3.5 How to determine the end of defrost by temperature
a) Reconfigure the listed functions at the end of the defrost to the maximum value:
- Cooling time (Interval between defrosts) F8 = 999min.
- Evaporator temperature to end defrost F13 = 105°C / 221°F
- Maximum defrost time F14 = 90min.
b) Wait for a while until a layer of ice forms in the evaporator.
c) Perform a manual defrost (using the ;
scroll key up to [dEFr] and press
d) Follow the melting process.
e) Wait until all of the ice in the evaporator has melted to consider the process completed.
f) With the defrost finished, check the evaporator temperature (S2) using the
6.3.9).
g) Using the value read in S2, set the temperature for end of defrost
- Evaporator temperature for end of defrost F13 =Temp. S2
h) For safety, reset the maximum defrost time, according to the type of defrost set.
Eg:
- Electrical defrost (by resistance) F14 = 45min.
- Hot gas defrost F14 = 20min.
i)Finally, set the cooling time (F8) at the desired value.
6.3.6 Defrost with two evaporators
With S3 configured for the 2nd evaporator (F52), the Fan output allows control of the second resistance.
Defrost always starts with the two outputs triggered. The resistors are shut down individually as their
evaporators reach the temperature to end defrost. With the two outputs off or having the maximum
defrost time elapsed, the draining process is started. With these settings, all the features of the Fan
are disregarded, including the Fan Delay process.
6.3.7 Functions Lockdown
The use of the functions lockdown adds greater security to the operation of the controller. When it is
active, the setpoint and other parameters are visible to the user, but are protected against undue
changes (F57=2) or you can block changes of control functions and leave the adjustment of the setpoint
enabled (F57=1). To activate the functions lock, access the [LOC,] option in the quick access menu.
Then [no,,] message will be displayed (lock must be enabled and inactive). With that on the display,
>
press the key for the time configured for the functions lock (F58), the activation is indicated by the
[LOC,][On,,]message. To enable the use of this function, F57 must be configured with 1 or 2.
When trying to change the parameters, the[LOC,]message indicates that the functions lock is active,
to deactivate it, turn the controller off and then turn it on again with the
pressed until the [LOC,][OFF,]message indicates the unlocking (10 seconds).
6.5 Table of parameters
Fun
[,F01]
Access code
[,F02]
Control differential (normal hysteresis)
[,F03]
Ambient temperature S1 indication offset
[,F04] Minimum setpoint allowed to the end user
[,F05]
Maximum setpoint allowed to the end user
[,F06]
Delay at start (energization)
11 12 13 14 15 16 17
Loads supply
Action
Activates
Deactivates
Stays activated
Deactivates
Stays deactivated
Activates / Deactivates
Stays deactivated
Activates / Deactivates
Stays deactivated
Deactivates
/
).
>
key (see section
>
key pressed. Keep the key
Description
Connection 24 Vac/dc
D1/S3 D2
5 6 7 8
9 10 11 12 13 14 15 16 17
1 2 3 4
24 Vac/dc
6.3.8 Control functions shutdown
The shutdown of the control functions allows the controller to operate only as a temperature indicator,
keeping the control outputs and alarms off. The use of this feature is enabled or disabled by the shutdown
function of the control functions (F56). When enabled, the control functions and alarms are switched off
([CTRL][OFF,]) or on ([Ctrl][ON,,]) in the quick access menu through the [Ctrl] option.
When the control functions are off, the message [OFF,]is displayed alternating with the temperature
and other messages. Also is possible turn on/ turn off the control functions by pressing the key
seconds.
Note: The time defined in the startup delay function begins counting once the control functions are
switched on again.
6.3.9 Stage of the process, elapsed time and temperature in sensors
S2 and S3
The operating status of the controller can be displayed by pressing the
of messages will be shown, indicating the current process, time (hh:mm) already elapsed in this stage,
temperature in the evaporator (S2) and temperature in S3. If the sensors are disabled, their
measurements will not be displayed.
Stages of the process:
[dEL,] Initial delay (delay at start of the instrument)
[Fan,] Fan-delay (delay for return of the fan)
[rEFr] Cooling
[Pre,] Pre-Defrost
[dEFr] Defrost
[dRAi] Drainage
[----] Control functions off
Unlock
F19
the indication
FAN-DELAY
F17
MAX. F20
(F52 or
6.3.10 Minimum and Maximum Temperature Record
The display of the minimum and maximum temperature record can be checked through the quick access
menu or by pressing the
temperatures recorded for each sensor are displayed in sequence preceded by identification messages
[rEg,], [,t-1] for ambient sensor (S1), [,t-2] for S2 (when active) and [,t-3] for S3 (when
active). To delete the minimum and maximum recorded values, hold the
displaying records or use the [CrEg]option in the quick access menu. The [rSET] message
indicates that the records have been deleted.
6.3.11 Unit Selection
To select the temperature unit in which the instrument will operate enter the [,F01] function with
access code [,231] and press the
< >
the or keys. To confirm, press
default value, therefore needing to be reconfigured.
6.4 Advanced operations
The functions menu can be accessed through the quick access menu, option [Func] or
simultaneously pressing
enter [,F01] by pressing
and twenty three). Confirm with
>
keys and follow the same procedure to set them. To exit the menu and return to normal operation,
/
press and hold until [----] appears.
NOTE: If the functions lockdown is active when pressing the
[LOC,] message on the display and will not allow the setting of parameters.
Loads supply
Lock the display
IF F39=1
if enabled on F17
F41
COOLING
PRE-DEFROST
IF F39=0 F08 F23
<
key while displaying the temperature. The minimum and maximum
/
key. Then, select the desired unit [,=C,] or [,=F,] using
/
. Whenever the unit is changed, the function settings assume the
< >
and while displaying the temperature. To allow changing the parameters,
/ < >
(short press), and using the or
/
. To modify the other functions, navigate the menu using the
< >
or
CELSIUS
Min Max Unit Standard Min
0 999 - 0 0
0.1 20 °C 2 1
-20 20 ° C 0 -36
-50 105 ° C -50 -58
-50 105 °C 105 -58
0 (NO) 30 min. 0 (NO) 0 (NO)
The sensor S1 (black)
must be in the ambient.
The sensor S2 (gray) must
be placed in the evaporator
through metallic cramp.
;
for 5
>
key (short press). A sequence
F13
DEFROST
DRAINAGE
MAX. F14 F18
<
button for 2s when
keys enter code 123 (one hundred
<
or
keys, the controller will show the
FAHRENHEIT
Max Unit Standard
999 - 0
36 °F 3
36 °F 0
221 °F -58
221 °F 221
30 min. 0 (NO)