 |
|
|
Click
on drawing to view large scale version
|
| |
| SmartFan
AC-T is available for 115 or 230 VAC PSC or shaded pole
fans and blowers with current ratings up to 3.5 Amps. It senses
power line frequency, 50 or 60 Hz, and automatically adjusts
parameters for nearly identical performance with either frequency.
A temperature alarm is included. The alarm output signal, triggered
at 10°C above Control Temperature, is from an optically isolated
NPN transistor. Control Temperature is adjustable by means of
a jumper on the circuit board. AC-T is compatible with temperature
sensors P1 through P9 shown on Sensors
page. |
| |
|
Features
- Current rating
is 3.5 Amps in air stream, 2.0 Amps in still air
- Automatically
adjusts to 60 Hz or 50 Hz power line
- Selectable Control
Temperatures of 35°, 40° or 45°C (74°, 80° or 86°C with
P3 surface sensor)
- Optically isolated
temperature alarm output sinks up to 0.5 mA (normally closed)
- Models optimized
for PSC or shaded pole air movers
|
| |
UL recognized to UL508 and CSA-C22.2, File E100344 |
IEC 950, VDE 0806 approved TUV Rheinland File E77132 |
| |
| SPECIFICATIONS |
| |
|
Part
Number
|
Power
Line Voltage
|
Maximum
Current to Fans (1)
|
Fan
Type
|
|
Nominal
|
Range
|
200
ft/min
|
Still
Air
|
|
|
115
VAC
|
95-135
VAC
|
3.5
Amps
|
2.0
Amps
|
PSC
Shaded Pole
|
|
|
230
VAC
|
190-270
VAC
|
3.5
Amps
|
2.0
Amps
|
PSC
Shaded Pole
|
|
H101
|
Hardware
Pack
|
|
| (1)
Air Temperature of 55°C or less. U.S. Patents 4,659,920, 4,722,699
and 5,364,026 |
| |
| INSTALLATION |
| |
|
Mounting
|
| To satisfy
safety agency requirements (UL, CSA, IEC, VDE), allow 1/4" (6.3
mm) between the circuit board and chassis ground and 5/16” (8
mm) to any uninsulated secondary circuits. To satisfy UL, a
normal blow fuse rated 10 Amps or less should be used in the
power line circuit. |
| |
| Sensor
Selection |
| There
is no polarity consideration when connecting the sensor. To
view Sensors page click here: sensors |
| |
| SUGGESSTED
CONECTING HARDWARE |
| |
|
Ref.
Desc.
|
Header
on Board (1)
|
H101
Hardware Pack
|
|
|
Quantity
|
Description
|
Manufacturer
(1)
|
PartNumber
(1)
|
|
J1
|
39-28-1043
|
|
Housing
Terminal (tin)
|
|
|
|
J2
|
22-29-2021
|
|
Housing
Terminal(gold)
|
|
|
|
J3
|
22-29-2021
|
|
Housing
Terminal(gold)
|
|
|
|
|
4
|
PCB Support
|
Richco
|
CBS-4-19
|
|
| (1)
or equivalent |
| |
| OPERATION
|
| |
| Fan
Speed vs. Sensor Temperature |
| The
relationship between fan speed, as a percentage of full speed,
and sensed temperature is shown in Figure 2. Full speed occurs
at the Control Temperature (Tc). |
|
Figure
2
Fan speed vs. sensor temperature
|
 |
|
| |
| Settings
|
| Control
Temperature (J4): Use this jumper to set Control Temperature
(Tc) to 35°, 40°, or 45°C. Factory setting is 40°C. If the P3
sensor is used, Control Temperature settings are 74°, 80°, and
86°C. |
| |
|
Temperature
Alarm Output (J3): An over-temperature alarm output from
an optically isolated phototransistor is provided at header
J3. Pins C and E are internally connected to the transistor’s
collector and emitter, respectively. This output is intended
for connection to a logic circuit.
| Alarm Type: |
Optically Isolated Phototransistor |
|
| Trigger: |
10°C Above Control Temperature |
|
| Alarm States: |
Conducting (Closed), Below Trigger |
|
| |
Cut-Off (Open), Above Trigger |
|
| |
Cut-Off (Open), Un-Powered State |
|
| Max. Voltage: |
30 VDC |
|
| Max. Current |
0.5 mA DC at < 0.4 VDC |
|
|
|
| |
| Testing
|
| If
operated at reduced speeds, the rotational speed of AC fans
is sensitive to static pressure load. Fans should be installed
and working against the intended system resistance before checking
idle speed. Most fans will idle well above one-half speed if
they are not loaded. |
| |
