Specifications :
Model : Light source, Response time
Display shift function
Timer function
C ontrol output
Supply voltage
Current consumption
Ambient illumination
Ambient temperature
Relative humidity
Vibration
Shock resistance
Housing material
Size
Weight
FS-V21*1 FS-V21G FS-V21R (P) FS-V21X*1
Red LED Greed LED 4-element red LED Infrared (950 nm)
250μs (FINE)/500μs (TURBO)/1ms (SUPER TURBO)/
4ms (ULTRA TURBO)/500μs (HIGH RESOLUTION)/
50μs (HIGH SPEED)
Max. ±1999 (variable)
Timer OFF, OFF-delay timer, ON-delay timer, and oneshot
timer (1 to 500 ms)
NPN open collector with 100 mA max at 40 V with a
max*2, Residual voltage of 1 V.
DC12-24V ±10% with a maximum ripple (peak to peak)
of 10%
Incandescent lamp: 20,000 Rx max.
Sunlight: 30,000 Rx max.
-10°C to 55°C (No freezing)
35% to 85% RH (No condensation)
10 to 55 Hz, 1.5-mm double amplitude,
each in X, Y, and Z directions for two hours
500 m/s2 Three times each in X, Y, and Z directions
Unit and cover are both polycarbonate made
W 9 mm x L70 mm x H 30 mm
Approximately 80 g (including 2-m cable)
Environment resistance Rating
Mode S-APC
mode OFF
580 mW
480 mW
430 mW
650 mW
530 mW
480 mW
S-APC mode turned ON or when
the HIGH SPEED mode is selected.
720 mW
600 mW
550 mW
720 mW
600 mW
550 mW
Normal
ECO half
ECO all
Normal
ECO half
ECO all
Model
Other than
R model
R model
*1. The model is sold only in Japan. Consult your KEYENCE representative
if the model is required outside Japan.