Auber TD400P Buku Petunjuk - Halaman 3

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AUBER INSTRUMENTS
Note 6. AS, Anti-short Cycle Delay:
The Anti-short is the delay time to turn on the cooling device. If the cooling
device is compressor based, compressor should not be turned on immediately
when it is at high pressure (just after turned off). Otherwise, it may shorten the
life of compressor. The Anti-Short cycle delay function can be used to prevent
the rapid cycling of the compressor. It establishes the minimum time that the
compressor remains off (after reaching cutout) before turns on again. The
delay overrides any controller demand and does not allow the compressor to
turn on until the set time-delay value has elapsed. It gives time to release the
refrigerant pressure through evaporator. It typically set to 4- 6 (minutes). The
unit is in minutes. This setting is only valid for cooling device control. By
default, AS is set to 0 (disabled).
Note 7. A-M, Power Outage/Startup Mode:
This parameter determines what the controller should do in an event of power
interrupt or outage. It also decides how the controller starts the program while
powered up. A-M can be set to three modes: C, S and M.
Mode C. After being powered on, the controller will continue the program from
the where it was powered off. For example, if step 3 is set for 40 and 5 hours,
the power was interrupted at 2.1 hours. Then, when the controller power up,
the controller will continue to control at 40 for 2.9 hr.
Mode S. The controller will run the program from step 1 every time the
controller is powered up. This is suitable for situations where the power never
fails, or when the program mode "PrG" is set to "off".
Mode M. The program will be held at the step at which the controller was
powered off. The controller will hold the temperature at the set value. The
controller lower display will flash "hold" and process temperature alternatively.
This mode is suitable for situations where the operator's attention is needed
after power interruption occurs.
Note 8. PrG, Program Mode:
When PrG is set to "ON", user can program up to 8 steps (Section 7). When
set it to "OFF", this multi-step function is disabled and controller is in single
step mode. User can only set "C-1" value (without timer t-1) when disabled.
Please be aware that if your controller is in single step mode, the green "RUN"
indicator will be off at all time. The start key, pause key and STEP key are
disabled. You can check the cooling device indicator (green on the left) and
heating device indicator (red on the right) for the socket output status. When
the light is on, the corresponding socket will be activated.
Note 9. SFA, Sensor Failure Operation:
The SFA defines how the output would be if the sensor fails. It can be set to 0-
0, 0-1 or 1-0. Please refer to Table 3 for details. For example, in some
applications, you may want the cooling device to be working and the heating
device to be off when sensor fails. Hence you need to set SFA to "1-0".
Table 3. Output of the controller when sensor fails.
SFA
Controller output when sensor fails
0-0
Cooling device off, heating device off
1-0
Cooling device on, heating device off
0-1
Cooling device off, heating device on
2015.06
Note 10. Time, Time unit setting:
The Time defines the timer unit setting for its timer function. It can be set to
hour (H) or minute (M). By default, Time is set to H.
Note 11. C-F, Temperature unit:
ºF: Display in Fahrenheit degree; ºC: Display in Celsius degree.
68.9
2 sec
SET
ah
SET
^
v
al
SET
^
v
hy
SET
^
v
CDF
SET
^
v
HDF
SET
^
v
ofs
SET
^
v
as
SET
^
v
A-m
SET
^
v
prg
SET
^
v
sfa
SET
^
v
time
SET
^
v
C-F
SET
^
v
end
SET
Figure 3. Flow chart of setting up parameters.
WWW.AUBERINS.COM
Deviation
20.0
high alarm
Deviation low
20.0
alarm
Temp. Control
1.0
Hysteresis Band
Cooling
5.0
Differential
Heating
5.0
Differential
0
Temp. Offset
Anti-short
M 0
Cycle Delay
Power Outage/
s
Startup Modes
on
Program Modes
Sensor Failure
0-0
Operation
h
Time Unit
O
F
Temperature unit
P3/5