Fiber type / HMD

FD-A320 Series

  • Digital display of light intensity on dual screen
  • Covers low to high temperatures
  • Employs the highly reliable Bestact relay
    * "Bestact" is a registered trademark of Yaskawa Controls Co.,Ltd.
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FD-A320 Series

Model Output type Control output Protective structure  
FD-A320 Mini power relay output /
Photo-MOS relay output
Light ON
Rating: 1c 5A 250VAC
Response time: 17ms
IP64
Contact
FD-A320H Bestact relay output /
Photo-MOS relay output
Light ON
Rating: 0.5A 220VAC / 0.3A 110VDC
Response time: 6ms
IP64
Contact

More Info

This photo sensor is a fiber radiation photo sensor (HMD) which can directly detect infrared energy radiated from heated materials such as heated steel.
The intelligent HMD has a wide dynamic range of amplifier (125 times conventional products), with a current output of 4-20mA.

  • Double screen displaying threshold and receiving light intensity
    Displaying light intensity in numbers on double screen. One screen shows the light intensity when detecting heated material digitally from 0.0 to 12.0 in real time, and the other shows the threshold of output operation. The dynamic range of the amplifier is wide, and the wide temperature range of heated materials is displayed in analog.
  • Current output of 4-20mA
    To survey assembly lines, this product outputs light intensity when detecting heated material, as an analog current.
  • One sensor measures low and high temperatures
    Provided with two temperature ranges: one for low temperature and the other for high. The range can be changed using a switch.
  • Simulation function
    Equipped with a simulation circuit for detecting heated materials. You can simulate the detection of heated materials with an external input.

Lowest Detectable Temperature

Select between two (high and low) temperature ranges with the mode setting

Guidelines are given below for the temperature of a detection object larger than the detecting field of view with optical head (OHA) and fiber optic cable (FG2) used for detection.
(The detectable temperature varies, depending on emissivity of the object.)

Low temperature range 350 - 800C
High temperature range 490 - 1300C

Guidelines for the minimum temperature of detection objects

The minimum temperature depends on the length of the fiber optic cable used or the detecting field of view of the optical head.
Temperatures shown in this table are for heated material larger than the field of view. If the material is smaller than the field of view, the lowest detectable temperature is increased. The guidelines are for the minimum temperatures of detection objects with margins of about four times as much as the inherent performance. For detailed data, see “Minimum Detectable Object and Lowest Detectable Temperature.”

  Low temperature range High temperature range
Fiber length Optical head Optical head
Standard view
model
OHA
Narrow view model
OHAN/OHAN10
Wide view model
OHW1/OHW2
Standard view
model
OHA
Narrow view model
OHAN/OHAN10
Wide view model
OHW1/OHW2
2m 350C 480C 415C 490C 685C 590C
3m 365C 500C 430C 510C 705C 610C
4m 375C 515C 445C 525C 720C 625C
5m 385C 530C 450C 540C 735C 635C
7m 400C 550C 475C 560C 760C 660C
10m 445C 600C 520C 610C 850C 725C
15m 480C 640C 555C 655C 920C 775C
20m 500C 665C 580C 680C 960C 800C
30m 530C 705C 610C 720C 1030C 850C

Amplifier unit
FD-A320
FD-A320H

Fiber optic cable

Example of combination of Airless hood and optical head
Optical head Model OHA
Airless hood Model F38A

Example of combination of Airless hood and optical head
Optical head Model OHW1 / OHW2
Airless hood Model F38W

Example of combination of air purge hood and optical head
Optical head Model OHA
Air purge hood Model F38PC

Example of combination of air purge hood and optical head
Optical head Model OHW1 / OHW2
Air purge hood Model 302W

Example of combination of Airless hood and optical head
Optical head Model OHAN
Airless hood Model F38A

Example of combination of air purge hood and optical head
Optical head Model OHAN/OHAN10
Air purge hood Model F38PC

Control output

Stability output (STB output)

Wiring

Detection field of view