Nidec Copal JT30 Single-turn Optical Contactless PotentiometerIndonesia Industrial Parts

Nidec Copal JT30 Single-turn Optical Contactless Potentiometer Potentiometers are displacement sensors that produce electrical output (voltage) in proportion to the mechanical displacement. They are basically composed of a resistor and a wiper (brush), with the mechanical displacement of the resistor relative to the wiper being accurately converted into an electrical voltage output. A voltage is applied to both ends of the resistor, and the wiper is moved. The displacement is measured by the voltage between one terminal of the resistor and the wiper. Looking at the component structurally, we can see the following: (Fig. 1) Further, the following formulas apply to the voltage output

Potentiometer

Nidec Potentiometer

Model of potentiometer

Wirewound Type

Precision wire winding technology has been used to achieve low noise and long life. Wirewound types include the single-turn J series for use in servo drives and the multiturn M series for use in settings.

Conductive Plastic Type

Special film resistors and original contact construction provide long life, with degradation that is theoretically infinitely small. Conductive plastic types include single-turn types and linear types, both for use in servo drives.

Cement Type

The use of cermet resistors allows for low prices. The degradation is theoretically infinitely small. Cermet types are single-turn for use in servo drives and for settings.

Optical Contactless Type

Contactless configuration offers a much longer life and lower noise compared with the conventional contact method.

Optical Contactless Principle

Optical contactless potentiometers shall detect the rotational angle at the time of shaft rotation by positioning sensor which photo-electrically transfers the displacement of light transmitted through a spiral slit that is placed between the luminous element and the positioning sensor

Features

Contactless configuration offers much longer life
Low torque 0.245 mN·m {2.5 gf·cm} maximum
Superior temperature characteristic due to temperature compensation circut incorporated
RoHS compliant

Applications

Nidec Copal Electronics’?products are widely used in various applications, mainly in industry.

Vehicle,?Construction machine
Medical equipment
Analytical?/?Messuring equipment
FA equipment
Residential facility,?Security
Social?infrastructure,?Commercial?tool,?etc.

Specifications

Electrical characteristics

Input voltage	DC5 V ± 0.25 V		DC12 V ± 0.6 V
Dissipation	40 mA maximum
Effective electrical angle	120°	340°	120°	340°
Output voltage	+0.5 ~ +4.5 V
Absolute linearity??1	± 1.5 %FS	± 2.0 %FS	± 1.5 %FS	± 2.0 %FS
Temperature sensitivity	± 2.0 %FS (± 1.0 %FS/0 ~ 50 °C)
Temperature medium drift	± 40 mV (± 30 mV/0 ~ 50 °C)
Insulation resistance	100 MO (at DC500 V) minimum
Dielectric strength	AC500 V (1 min)

Mechanical characteristics

Starting torque	0.245 mN·m {2.5 gf·cm} maximum?at normal temp.?
Maximum rotational speed	1500 min-1
Mechanical angle	360° continuous
Rotational life	2 × 108 revolution?at 25? , 200 min-1?
Vibration	294.2 m/2 {30 G} 30 ~ 200 Hz, 30 h
Shock	294.2 m/s2 {30 G} minimum