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CURRENT DERATING vs. AMBIENT TEMP.
% Rated
Current
CURRENT DERATING vs. AMBIENT TEMP.
% Rated
100%
Current
80%
100%
60%
80%
40%
60%
20%
40%
20%
10
20
10
20
Specifications
•
Power Source: 95−125 VAC
•
Frequency: 47−64 HZ
•
Current Ratings: 2 AMPS
•
Storage Temperature: −40ºC to 125ºC
•
Operating Temperature: −40ºC to 70ºC
SETTING CONTROL MODES
The AFANTSC can automatically control air temperature
by proportionately increasing or decreasing fan speed as
required.
Fan On / Fan Off Feature (switch #1)
To turn the fan(s) off below the set idle speed (see table
3), set switch 1 to the ON (down) position. To keep the
fans running at idle speed below the set idle speed, set
switch 1 to the OFF position.
Setting Idle Speed (switch #2,3)
The idle speed is the minimum voltage (as a % of supply
voltage) supplied to the fan. The AFANTSC can be set
for idle speeds of 30, 40, 50 and 60% by setting DIP
switches 2 and 3. The default idle setting is 50%.
Table 1: Idle Speed DIP Switch Settings
% of Supply DIP
Switch
30%
40%
50%
60%
87784016
30
40
50
60
70
Ambient Temperature C°
Figure 1
30
40
50
60
70
Ambient Temperature C°
Figure 1
DIP Switch
2
ON
OFF
OFF
ON
© 2018 Hoffman Enclosures Inc.
Control Temperature (switch #4,5)
The control temperature is the point above which the fans
will run at full speed (T
fans at 30, 35, 40 or 45°C by setting DIP switches 4 and 5. The
default setting is 35°C.
Control Temperature (T
TC (°C)
30
35
40
45
80
Control Temperature (switch #6)
80
The temperature slope (T
between idle speed and full speed. The slope can be set at
4°C or 10°C by using DIP switch 6. The default setting is 4°C.
See figure 1.
VAC
100%
VAC
80%
100%
60%
80%
40%
60%
20%
40%
20%
3
OFF
ON
OFF
ON
). The AFANTSC can be set to control
C
Table 2: Control Temperature DIP Switch Settings
)
C
TC (°F)
86
95
104
113
) is the temperature difference
S
Table 3: Temperature Slope DIP Switch Settings
Temperature Slope (T
)
S
T
(°C)
T
(°F)
S
S
4
7
10
18
RMS FAN VOLTAGE vs. TEMPERATURE
RMS FAN VOLTAGE vs. TEMPERATURE
FAN ON
FAN ON
FAN OFF
FAN OFF
T
− T
C
S
Figure 2
T
− T
C
S
Figure 2
PH 763 422 2211 • nVent.com/HOFFMAN
DIP switch
4
5
OFF
ON
OFF
OFF
ON
OFF
ON
ON
DIP switch
6
OFF
ON
T
C
T
C
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