New linear stepper drive incorporates end stop detection and control electronics

The Johnson Electric Saia Motor brand has developed a stepper motor drive with electronic end stop detection where the motor and control electronics form one structural unit. The integrated solution provides enormous advantages compared with conventional solutions in which a motor and a separate board with the control electronics are connected by a cable. The entire product functionality is contained in one single package instead of traditionally two separate parts.

This solution also requires less space and offers high drive reliability.

At the heart of the stepper drive product range are the proven UCB, UCL and UCB series unipolar rotary and linear stepper motors. The control electronics are mounted directly on the motor coil connecting pins. The drive has a three wire interface for 24V supply voltage, ground and a control input. Optionally the drive can be used as an open-close actuator with a switching contact as a control signal or as a continuously operating adjustment drive. In this case, the position set point can be in the form of a pulse width modulated (PWM) signal or a control voltage between 0-10 Volts.

An integrated algorithm detects mechanical end stops and automatically stops the stepping action. The automatic end stop detection eliminates noise which otherwise occurs on reaching the end position, reduces mechanical stress in the system, compensates for traverse distance tolerances and also increases operating life. The drive produces positioning forces of up to 50 N. positioning speeds of between 2 and 20 mm/sec and positioning distances up to 50 mm can be achieved. The range of applications for the drive include medical devices, office machines, HVAC controls, vending, gaming machines and more.

The linear step motors described on this page have been designed to solve unique applications where a linear step motor may provide improved positional accuracy, smooth operation, and minimal package size. Please click here if you would like more information on our linear step motors or provide us with specifics regarding your application requirements so we can suggest a prototype.

Gas Tight Linear Stepper Motors

Low Noise Compact Linear Step Motor and Drive

Small And Cost Efficient Linear Stepper Motor

Powerful and Efficient Linear Stepper Motors

Gas Tight Linear Stepper Motors

Applications

• Move a valve piston in natural gas atmosphere
• Operate a gas valve in a boiler
• Appliance gas valve controls
• Gas Fireplaces

Technical data - Model EGD-420 Linear Stepper Motor

• Linear stepper motor, rotor and shaft running inside a stainless steel tub in a gas atmosphere
• Compact design with only 28mm stator diameter
• 10mm travel; resolution 0,041mm/step
• Forces to 5N
• Life > 500k cycles
• Unipolar version, 12V 100% duty cycle

Low Noise Compact Linear Step Motor and Drive

Applications

• Linear operation where low noise is required
• Valves
• Flaps

Technical data - Model UCL Linear Step Motor with Drive

• Linear unipolar stepper motor with integrated electronics driver
• End stop detection included
• No bouncing noise - automatic switch off at end stop
• ON/OFF function or modulating function possible
• Control signals for modulating function: PWM or 0-10V

• Supply voltage: 24VDC +/- 15%
• Signal voltage for PWM: 5É24VDC
• Frequency for PWM: 200Hz +/-10%

Small And Cost Efficient Linear Stepper Motor

Applications

• Dosing and mixing of fluids or open-close functions in valves.
• Applicable in medical systems, beverage dispensers, coffee machines, heating controls and many more
• Small positioning and adjustment systems
• Locking systems for doors and other equipment
• Handling systems for the automation industry

Technical Data - Model NMG 20 Linear Stepper Motor

• Stator diameter: 20 mm
• Travel: 15 mm (others on request), resolution: 0,025 mm / step
• Force: 20 N (at 100 Hz, duty cycle: 25 %)
• Bipolar construction, nominal voltage: 12 Vdc (others on request)
• Thermal class: B according DIN EN 60085
• Connection: by flying leads with CT connector
• Customer specific flanges possible

Powerful and Efficient Linear Stepper Motors

Applications

• Pumps
• Valves / actuators
• Drives for hospital beds
• Positioning drives for automation

Technical Data - Model NMG 55 Linear Stepper Motor

• Travel: 55 mm (others on request), resolution: 0,03125 mm / step
• Lifetime: up to 1 million cycles (forward + reverse) at 100 N (others on request)
• Force: up to 500 N (short-term operation)
• Bipolar winding, nominal voltage: 24 V DC (others on request)
• Thermal class: 155°C according DIN EN 60085: 2004
• Connection: by lead wires (AWG22), special connectors on request
• Customer specific flanges possible