ORIENTAL MOTOR CO., LTD.

Stepper Motors RKII Series

RKS545AC-PS5

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PKE545AC-PS5 RKSD503-C

Geared Motor/Control Circuit

Product Classification Product Name List Price List Price Shipping Date
Geared Motor / Control Circuit RKS545AC-PS5 SGD 870 USD 696 Product to be Discontinued
(30.1.2026 order deadline)
  • *Please contact us regarding purchasing of product.
  • *Product will be discontinued on 31.3.2026. Please place your order before the order deadline.

Included

  • Motor, Control Circuit, Connector for Main Power Input Terminal, Connector for Pulse Input, I/O Signal Connector, Parallel Key

Specifications

Data Download

Other Specifications

Driver Specifications

　 Built-in Controller Type Pulse input type
Maximum Input Pulse Frequency − Line driver output by host controller:
500 kHz
(at 50 % duty)
Open-Collector Output by Host Controller:
250 kHz
(at 50 % duty)
Negative logic pulse input
Input Signals Photocoupler Input, Input Signal Voltage:
11.4 V~26.4 V		 Photocoupler Input, Input Signal Voltage:
11.4 V~26.4 V
(AWO, CS, FREE, ALM-RST)
Photocoupler Input, Input Signal Voltage:
3 V~5.25 V
(CW (PLS) +5 V, CCW (DIR) +5 V)
Photocoupler Input, Input Signal Voltage:
21.6 V~26.4 V
(CW (PLS) +24 V, CCW (DIR) +24 V)
Output Signals Photocoupler and Open-Collector Output
External operating conditions: 30VDC 10 mA max. 		Photocoupler and Open-Collector Output
External operating conditions: 30VDC 10 mA max.
(READY, ALM, TIM)
Number of Positioning Data Sets 64 Points −
Positioning Operation Independent, linked, linked 2, sequential, direct −
Other operations Continuous operation, JOG operation, return-to-home operation,
Test Operation		 −
Control Module
OPX-2A 		O −
Support Software
MEXE02 		O −

General Specifications

Motor Driver
Built-in Controller Type Pulse input type
Thermal Class 130 (B)
[UL is 105 (A) certified]		 −
Insulation Resistance

100 MΩ or more when a 500 VDC megger is applied between the following places.
 

  • Between case and motor windings
  • Between case and electromagnetic brake windings*1

100 MΩ or more when a 500 VDC megger is applied between the following places.
 

  • Between protective earth terminal and power supply terminal
  • I/O signal terminal - between power supply terminal
Dielectric Strength

Sufficient to withstand the following for 1 minute:

  • Between case and motor windings
    1.5 kVAC 50 Hz or 60 Hz
  • Between case and electromagnetic brake windings*1
    1.5 kVAC 50 Hz or 60 Hz
 Sufficient to withstand the following for 1 minute:
  • Between protective earth terminal and power supply terminal
    1.5 kVAC 50 Hz or 60 Hz
  • I/O signal terminal - between power supply terminal
    1.8 kVAC 50 Hz or 60 Hz
  • Between protective earth terminal and power supply terminal
    1.8 kVAC 50 Hz or 60 Hz
  • I/O signal terminal - between power supply terminal
    1.9 kVAC 50 Hz or 60 Hz
Operating Environment
(when operating)		 Ambient Temperature -10~+50 °C (Non-freezing): Standard Type
TS/PS/FC geared type
0~+50 °C (Non-freezing): With encoder
0~+40 °C (Non-freezing): Harmonic
Geared Type
According to Oriental Motor’s measurement conditions 		0~+55 °C*2 (Non-freezing)
Ambient Humidity 85 % max. (Non-condensing)
Atmosphere No corrosive gases or dust. No exposure to water, oil or other liquids.
Temperature Rise 5-phase excitation at rated current, 80 °C max. at standstill
Temperature rise of winding section at 80 °C or less (resistance change method)		 −
Degree of Protection IP20 IP10 IP20
Stop position accuracy*3 ±3 arc minute (±0.05˚)
Shaft Runout 0.05 T.I.R. (mm)*4 −
Radial Play*5 0.025 mm Max. (Load 5 N) −
Axial Play*6 0.075 mm Max. (Load 10 N) −
Concentricity of Installation Pilot to the Shaft
 		 0.075 T.I.R. (mm)*4 −
Perpendicularity of mounting surface to the shaft
 		 0.075 T.I.R. (mm)*4 −
*1
(Only for types with electromagnetic brake)
*2
When a heat sink of a capacity at least equivalent to an aluminum plate with a size of 200×200 mm and 2 mm thickness
*3
0.72˚ is the value under no load. (The value changes with the size of the load.)
*4
T.I.R. (Total Indicator Reading): The total dial gauge reading when the measurement section is rotated 1 revolution centered on the reference axis center.
*5
Radial Play: Displacement in shaft position in the radial direction when a 5 N load is applied perpendicular to the tip of the motor shaft.
*6
Axial Play: Displacement in shaft position in the axial direction when a 10 N load is applied to the motor shaft in the axial direction.

Note

  • Disconnect the motor and driver when measuring insulation resistance, or conducting a dielectric strength test.
Disconnect the motor and driver when measuring insulation resistance, or conducting a dielectric strength test.

Permissible Radial Load and Permissible Axial Load

Unit: N

Type Motor
Frame Size 		Type Gear Ratio Permissible Radial Load Permissible Axial Load
Distance From Shaft End [mm]
0 5 10 15 20
Standard Type 42 mm PKE54 − 35 44 58 85 − 15
60 mm PKE56 90 100 130 180 270 30
85 mm PKE59 260 290 340 390 480 60
TS Geared Type 42 mm PKE54 3.6, 7.2, 10 20 30 40 50 − 15
20, 30 40 50 60 70 −
60 mm PKE56 3.6, 7.2, 10 120 135 150 165 180 40
20, 30 170 185 200 215 230
90 mm PKE59 3.6, 7.2, 10 300 325 350 375 400 150
20, 30 400 450 500 550 600
PS Geared Type 42 mm PKE54 5 70 80 95 120 - 100
7.2 80 90 110 140 -
10 85 100 120 150 -
25 120 140 170 210 -
36 130 160 190 240 -
50 150 170 210 260 -
60 mm PKE56 5 170 200 230 270 320 200
7.2 200 220 260 310 370
10 220 250 290 350 410
25 300 340 400 470 560
36 340 380 450 530 630
50 380 430 500 600 700
90 mm PKE59 5 380 420 470 540 630 600
7.2 430 470 530 610 710
10 480 530 590 680 790
25 650 720 810 920 1070
36 730 810 910 1040 1210
50 820 910 1020 1160 1350
Harmonic Geared Type 42 mm PKE54 50, 100 180 220 270 360 510 220
60 mm PKE56 320 370 440 550 720 450
90 mm PKE59 1090 1150 1230 1310 1410 1300
FC Geared Type 42 mm PKE54 7.2, 10, 20, 30 180 200 220 250 - 100
60 mm PKE56 270 290 310 330 350 200
  • The product names are listed such that the product names are distinguishable.
  • The PS Geared Type has a lifetime of 20,000 hours, when either the permissible radial load or the permissible axial load is applied.
    Click here for information about gearhead life

Radial Load and Axial Load

Radial Load and Axial Load

Rotation Direction

This indicates the rotation direction when viewed from the output shaft side.
The rotation direction of the gearhead output shaft relative to the standard type motor output shaft varies depending on the gear type and gear ratio. Please check the following table.

Type Gear Ratio Rotation Direction as Viewed From the Motor Output Shaft Side
 
TS Geared Type 3.6, 7.2, 10 Same direction
20, 30 Opposite direction
TH Geared Type
Frame size 28 mm		 7.2, 10 Opposite direction
20, 30 Same direction
TH Geared Type
Frame size 42 mm, 60 mm, 90 mm		 3.6, 7.2, 10 Same direction
20, 30 Opposite direction
SH Geared Type
Frame size 28 mm		 7.2, 36 Same direction
9, 10, 18 Opposite direction
SH Geared Type
Frame size 42 mm, 60 mm		 3.6, 7.2, 9, 10 Same direction
18, 36 Opposite direction
SH Geared Type
Frame size 90 mm		 3.6, 7.2, 9, 10, 18 Same direction
36 Opposite direction
CS Geared Type 5, 10, 15, 20 Same direction
FC Geared Type
PS Geared Type
PN Geared Type
HPG Geared Type 		Overall gear ratio Same direction
Harmonic Geared Type 50, 100 Opposite direction
Standard type motor illustration

Standards

Regulations and Standards Materials

Documents about compliance with regulations and standards can be downloaded from the "Data Download" tab on the product details page.
(The types of files available for download vary by product.)

Explanations of the Global Laws, Regulations and Standards can be found here.

Information about our compliance with regulations and standards for each of our product series can be found here.

Hazardous Substances

The product does not contain any substances (10 substances) exceeding the regulation values of the RoHS Directive (2011/65/EU, 2015/863/EU).

System Configuration

System Configuration

Cables and Accessories

Data Download
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