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Koyo encoders. TRD-K Series. TRD-KL Series.


TRD-K Series, φ78 Absolute Type

  • Resolutions up to 10 bits (1,024) are available.
  • High axial load due to strengthened spindle (Radial 100 N / thrust 50 N)
  • Robust type using a φ10 mm stainless steel shaft
  • Gray code output that eliminates reading errors
  • Use of a metal slit board delivers an impact resistance of 980m/s2.
  • Installation using a servo mount convenient for origin adjustment is possible.

Model Number List

Type Model Number Resolution Cable Length Remarks
Dustproof and waterjet- proof Type with Cables Taken Out from the Side TRD-K180-YS 180 (8-bit) 2 m Provided with an FC–21 dedicated connector Provided with a cable expansion connection connector
TRD-K256-YS 256 (8-bit)
TRD-K360-YS 360 (9-bit) TRD-K360-YCS TRD-K360-YPS
TRD-K512-YS 512 (9-bit) TRD-K512-YCS TRD-K512-YPS
TRD-K720-YS 720 (10-bit) TRD-K720-YCS TRD-K720-YPS
TRD-K1024-YS 1,024 (10-bit) TRD-K1024-YCS TRD-K1024-YPS
Dustproof and Waterjet- proof Connector Type
(with Cables Taken Out from the Back)
TRD-K360-YC2 360 (9-bit) No
TRD-K512-YC2 512 (9-bit)
TRD-K720-YC2 720 (10-bit)
TRD-K1024-YC2 1,024 (10-bit)

Electrical Specifications

Model Number TRD-K□-Y□
Power Supply Supply Voltage 10.8 to 26.4 V DC
Allowable Ripple 3% rms or less
Consumption Current 70 mA or lower (No load)
Output Code Gray binary
Maximum Response Frequency 20 kHz
Precision (360 / (Resolution x 2))˚
Rotation Direction Increase of output code in clockwise rotation (CW)
Output Output Form NPN open collector output
Output Logic Negative logic (Active low)
Residual Voltage 0.4 V or lower
Sink Current 30 mA or lower
Load Supply Voltage 30 V DC or lower
Rise / Fall Time* Not larger than 2.0 µs (Load resistance 1 kK)

Mechanical Specifications

Starting Torque 0.1 N・m or less (+20˚C)
Moment of Inertia 1 x 10-5  kg・m2
Shaft Allowable Load Radial: 100 N
Thrust: 50 N
Maximum Allowable Number of Revolutions (Note 1) 5,000 rpm
Cable Outside diameter φ7.8 mm
12-core shielded oil-resistant vinyl chloride cable Core wire nominal cross-sectional area: 0.3 mm2
Weight Type with cable taken out from the side: Approx. 750 g (With 2 m cable) Connector type: Approx. 500 g

Environmental Requirements

Use Ambient Temperature -10 to +50˚C
Storage Ambient Humidity -25 to +80˚C
Use Ambient Humidity 35 to 85% RH (No condensation)
Withstand Voltage 500 V AC    50/60 Hz    1 minute*
Insulation Resistance 10 MK or higher (500 V DC mega)
Vibration Resistance (Endurance) Displacement half amplitude:
0.75 mm, 10 to 55 Hz, 3 axial directions, each 1 h
Impact Resistance (Endurance) 980 m/s2
11 ms, each 3 times in 3 axial directions
Protective Structure IP65 (Dustproof and waterjet-proof type)

TRD-KL Series, φ78 Absolute Type

  • Space-saving type with sideward-exiting cable / connector
  • Strengthened dustproof and waterjet-proof type that can be used in places exposed to water and oil
  • Robust design that uses the strengthened spindle of a φ10 mm stainless steel shaft and an aluminum die-cast cover
  • Gray code output that eliminates reading errors
  • Use of a metal slit board delivers an impact resistance of 980 m/s2.
  • Installation using a servo mount convenient for origin adjustment is possible.

Model Number List

With Cable With Connector
Model Number Resolution Cable Length Model Number Resolution Cable Length
TRD-KL180-Y 180 (8-bit) 2 m TRD-KL180-YC2 180 (8-bit) No
TRD-KL250-Y 250 (8-bit) TRD-KL250-YC2 250 (8-bit)
TRD-KL256-Y 256 (8-bit) TRD-KL256-YC2 256 (8-bit)
TRD-KL360-Y 360 (9-bit) TRD-KL360-YC2 360 (9-bit)
TRD-KL500-Y 500 (9-bit) TRD-KL500-YC2 500 (9-bit)
TRD-KL512-Y 512 (9-bit) TRD-KL512-YC2 512 (9-bit)
TRD-KL720-Y 720 (10-bit) TRD-KL720-YC2 720 (10-bit)
TRD-KL1000-Y 1,000 (10-bit) TRD-KL1000-YC2 1,000 (10-bit)
TRD-KL1024-Y 1,024 (10-bit) TRD-KL1024-YC2 1,024 (10-bit)

Electrical Specifications

Model Number TRD-KL□-Y□
Power Supply Supply Voltage 10 to 30 V DC
Allowable Ripple 3% rms or less
Consumption Current 70 mA or lower (No load)
Output Code Gray binary
Maximum Response Frequency 20 kHz
Precision (360 / (Resolution x 2))˚
Rotation Direction Increase of output code in clockwise rotation (CW)
Output Output Form NPN open collector output
Output Logic Negative logic (Active low)
Residual Voltage 0.4 V or lower
Sink Current 30 mA
Load Supply Voltage 30 V DC or lower
Rise / Fall Time* Not larger than 2.0 µs (Load resistance 1 kK)

Mechanical Specifications

Starting Torque 0.1 N・m or less (+20˚C)
Moment of Inertia 1 x 10-5  kg・m2
Shaft Allowable Load Radial: 70N
Thrust: 40N
Maximum Allowable Number of Revolutions (Note 1) 5,000 rpm
Cable Outside diameter φ7.8 mm
12-core shielded oil-resistant vinyl chloride cable Core wire nominal cross-sectional area: 0.3 mm2
Weight Type with cable taken out from the side: Approx. 750 g (With 2 m cable) Connector type: Approx. 450 g

Environmental Requirements

Use Ambient Temperature -10 to +60˚C
Storage Ambient Humidity -25 to +80˚C
Use Ambient Humidity 35 to 85% RH (No condensation)
Withstand Voltage 500 V AC    50/60 Hz    1 minute*
Insulation Resistance 10 MK or higher (500 V DC mega)*
Vibration Resistance (Endurance) Displacement half amplitude:
0.75 mm, 10 to 55 Hz, 3 axial directions, each 1 h
Impact Resistance (Endurance) 980 m/s2
11 ms, each 3 times in 3 axial directions
Protective Structure IP65 (Dustproof and waterjet-proof type)