A)The
output of 3rd wire Signal-Rotation Detector Function:
Suffix basic part number with "-RD" for
Rotation Detector Function (DC FANS ONLY) |
Lock Sensor (locked rotor alarm signal)
Lock sensors are used to detect if the fan motor
is in operation or stopped.
|
B)The
output of 3rd wire Signal-Frequency Generator Function:
Suffix basic part number with "-FG" for
Frequency Generator Function (DC FANS ONLY)
Pulse Sensor
(2 pulse per revolution signal) / Tachometer output
Pulse sensors
are are used for detecting the rotational speed of the fan motor.
If fan is locked on VH, signal stays locked. If fan is locked on
VL, signal stays at VL for a few hundred MS, then moves to
VH.
Vcc: rated voltage |
|
C) Temperature
Control
Suffix basic part number with "-T" for
Temperature for operating environments where noise
and
temperature are a consideration. When the built
in thermistor detects a drop in ambient
temperature, the fan rpm will decrease resulting
in a lower noise level and airflow rate.
Conversely, as the thermistor detects a rise in
temperature, the noise level will increase relative
to the rise in the fan's rpm's until the targeted
temperature has been attained. (DC FANS ONLY) |
Speed control by temperature sensor
Sofasco thermally controlled fan uses a thermistor to sense temperature.
Ther thermistor can be mounted in the hub area or on the end
of special length leads. The fan will operate at maximum speed
if the thermistor senses high temperature and minimum speed
if the temperature is low.
Between these upper and lower limits, fan speed will vary almost
linearly according to temperature.
|
D) Dust
and Water Splash Resistant as per IEC IP-5.4 Suffix basic part
number with "-54" for
Dust
Resistant/Water Splash Resistant. This unit is protected
against splashing water (water spraying
at all angles @ 10 liters/min @ a gage pressure
of 80-100kN/m2 for 5 minutes.
Dust and Water Jet Resistant as per IEC IP-5.5 Suffix
basic part number with "-55" for Dust
Resistant/Water Jet Resistant. This unit is protected
against water jets projected at all angles
through a 6.3mm nozzle at a flow rate of 12.5 liters/min
at a gage pressure of 30kN/m2 for 3
minutes from a distance of 3 meters.
IP Protection
Protection against touching
live parts or ingress
of solid objects |
|
Protection against
ingress of linquids |
| IP First figure |
|
|
|
Second figure |
| No protection |
0 |
 |
0 |
No protection |
Touching by
hand
or
12mm dia. objects |
1 |
 |
1 |
Vertical water
droplets
No harmful ingress |
Touching by
finger
or
12mm dia. objects |
2 |
 |
2 |
Showering
at 15°
No harmful ingree |
Touching by
tools or
wire 2.5mm dia.
or
2.5mm dia. objects |
3 |
 |
3 |
Showering
at 60 °
No harmful ingree |
Touching by
tools or
wire 1mm dia.
or
1mm dia. objects |
4 |
 |
4 |
Splashing
from any direction
No harmful ingress |
Total touch
protection
or
no harmful ingress of dust |
5 |
 |
5 |
Water jets
from any direction
No harmful ingress |
Total touch
protection
or
no ingress of dust |
6 |
 |
6 |
large volume
of water
No ingress |
| |
|
 |
7 |
Immersion
up to 1 meter deep
No ingress |
| |
|
 |
8 |
Submersion
at specified depths
Exceeding 1 meter
No ingress |
|
| |
E) Current
limit protection / Auto restart protection
When the fan motor is locked, the device will cut off the drive
current within two to six seconds and restart automatically after
a few seconds. If the lock situation is continued the device
will work as cut off >restart>cut off> restart>...
repeatedly till the lock is released.
|
F) Speed
control by PWM Signal
A speed control lead can be provided that will accept a PWM signal
from the customer circuit to vary the speed of the fan. The change
in speed is linear by changing the Duty-Cycle of the PWM. PWM
signal types are standardized as following;
Open collector type and pull-up voltage is changed by maximum
operating voltage and sink currrent by consuming current.
*PWM signal function design is decided by customer.
Click HERE for more speed control information
G) Parylene Coatings
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