°C
-5~5
11
AD2
Temp. sensor 2 adjustment
ALTEC
PV
Out
ON
OFF
ON/OFF Control - Cooling mode
ON/OFF Control - Heating mode
L1
KY1
PV
Out
ON
OFF
L1
KY1
Technical Data
While temperature sensor connection breakdown
VR
is displayed, or while overrange
SNB
is displayed.
At this time, when the temperature sensor T1 fails, relay output(OUT) is determined
by
PF1
as shown in the parameter list.
6.6 Sensor Failure
Switch off the controller; press keys ▲ and ▼ at the same time and hold on, then
switch the controller on again. Parameter
SPK
appears on display. Parameter
selection and the display of the value is obtained by pressing key P repeatedly;
change with keys ▲ and ▼ and store with S.
6.4
Parameter List
SPK
Mnemonic
Setpoint high limit
Parameter
-50
~150
°C
°C
Adjustable Range
limit the adjustable range of
L1
and
AL2
Parameter
Description
5
SN
SPL
-50
~150
°C
°C
6
0~10
minutes
Compressor protection
7
RT1
OUT relay min. off
time
Setpoint low limit
AT1
Output action
D,R
REV
Direct(cool)
Reverse(heat)
10
°C
-5~5
9
AD1
Temp. sensor 1 adjustment
PF1
Temperature sensor
failure output
ON
0FF
OUT 'ON' while sensor failure
OUT 'OFF' while sensor failure
8
1
L 1
Temp. differential setpoint
SPK
~
SPL
2
KY 1
Hysteresis 1
10 °C
1~
Operation parameter
3
AL2
Alarm value
SPK
~
SPL
4
KY2
Alarm hysteresis
10 °C
1~
2AL
Alarm object
T1
T2
DT
Channel 1 measured temp. T1
Channel 2 measured temp. T2
Temperature difference
12
6.3 Output Action
AT1
=
D,R
, OUT1 as cooling control output;
AT1
=
REV
, OUT1 as heating control output;
While the controller was configured for cooling applications, to avoid compressor
switch off and on frequently, must set the minimum off time
RT1
between the switch
OFF and switch ON, regardless of the input value.
The control algorithm is ON/OFF, temperature differential setpoint is
L1
, hysteresis is
KY1
.
WWW.ALTEC.CC
Sample rate
Measurement range
Resolution
Temperature sensor
Relay contact rating
Control algorithm
Power supply
Environmental
-50~150 °C
1 °C
NTC, PVC Wire, 2.0m
5(8)A/250VAC
125ms
ON/OFF
220V AC,
2.0W
≤
Temp: -20~55 °C
,
Rel. Humidity
:
≤
85%
Dimensions
W78
H35
D78mm
×
×
ALO
Alarm mode
0FF
K,A
LOA
Turn alarm off
Full-scale high alarm
Full-scale low alarm
13
6.5
Alarms
Full-scale high alarm(
K ,A
)
Full-scale low alarm(
LOA
)
△
AL2
△
AL2
Alarm LED
PV
time
Hysteresis
KY2
Alarm LED
PV
time
Hysteresis
KY2
Two different types of alarm can be configured with
ALO
:
K ,A
and
LOA
as the right
table
shows. The alarm h
is
KY2
.
H
is used to provide a definite indication of the alarm condition and to
prevent alarm relay chatter.
ysteresis
ysteresis
