Stepper Motor Torque Tester

Stepper Motor Test System

Load-Sensor & Pulley Specifications:

Model	Load Sensor	Pulley Radius (mm)
		Directly wound on the shaft *1	2.5mm	5mm	10mm	20mm
JP-R5N	0.5N	-	1.25mNm	2.5mNm	5mNm	10mNm
JP-1N	1N	-	2.5mNm	5mNm	10mNm	20mNm
JP-2N	2N	-	5mNm	10mNm	20mNm	40mNm
JP-5N	5N	-	12.5mNm	25mNm	50mNm	100mNm
JP-10N	10N	-	25mNm	50mNm	100mNm	200mNm
JP-20N	20N	-	50mNm	100mNm	200mNm	400mNm

Torque = Load-Sensor Rating(N) × Pulley Radius(mm)
*1: Torque will be related to motor shaft Radius.

Profile:

With the unique application of Prony (winding) braking.
It automatically obtains the full pull-in and pull-out torque curves with high accuracy.

• Pull-in torque:
  The maximum torque at which the motor can start from the holding state without losing steps for a given speed
• Pull-out torque:
  The maximum torque at which the motor can operate without losing steps for a given loading

Advantages:

• Minimal moment of inertia of the tester:
  By using the Prony method, the measurement is not affected by the inertia and the coupling loss of the test system. Especially in the Pull-in test, more to show this advantage.
• Wide Measuring Range:
  Six modes of sensor, to select the proper sensor and pulley,
  The measuring Range is from 0.1 to 400 mNm.
• Monitoring and analysis easier:
  Real-time display of testing results on the screen.
  Data-File can be exported to Excel format

Measured Example:

• Pull-in & Pull-out Curve
• (X-axis: Frequency Y-axis: Torque)

Specifications:

Brake	Prony braking
Load-Sensor	Six types: 0.5N, 1N, 2N, 5N, 10N, 20N
Sensor sensitivity	DC 2 V/ rating
Torque precision	Within ± 1% of torque range
Maximum allowable load	200% of Sensor rating
Torque meas. range	T=Sensor Rating X Pulley Diameter/ 2
Drive frequency range	16-50,000 Hz
Drive signals	Square wave (duty 1:1), TTL-level voltage signal or open-collector signal
Operating System	Microsoft Windows
Power supply	Single-phase AC100-120V ± 10%,50/ 60 Hz
	Single-phase AC200-240V ± 10%,50/ 60 Hz

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