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Closed Loop Stepper Motor and Driver

Updated

What Are Closed Loop Stepper Control Systems?

Closed-loop stepper motors are similar to regular stepper motors but have better performance due to the addition of an encoder as well as lower internal inductance. The end result is that the system using these motors performs much better. When coupled to closed-loop motors and drivers, CNC machines, actuators and other automation equipment have a better and more efficient operation.

At Maker Store, closed-loop stepper motor and driver systems are available in:
  • 2Nm: For small to medium-sized machines.
  • 3Nm: For higher powered or larger machines.
There are also two different driver types to suit the closed-loop stepper motors:
  • HSS57: For high performance builds.
  • HBS57: For budget-oriented builds. 

Wiring guides: HSS57 System

The recommended power supply voltage is 36V, you may go up to 48V. The mains connections should be done by a licensed electrician or similarly qualified individual. The maximum current output of the driver is 6A. Take note of the encoder wiring. The encoder GND is white in colour. For illustration purposes, it is shown as a light grey as white will not show on a white background.

Wiring guides: HBS57 System

The wiring is exactly the same as the HSS57 system. Please note that the maximum voltage for the HBS57 driver is 70V and the maximum current output of the driver is 5A. Take note of the encoder wiring. The encoder GND is white in colour. For illustration purposes, it is shown as a light grey as white will not show on a white background.

 Driver settings: HSS57

 
On the HSS57 driver, the dip switch array provides further fine tuning of motor direction and microsteps which in turn affects how fast or precise the system becomes. Incorrect setting of the dip switches may lead to incorrect steps per mm travelled by the motor. We recommend 1/8th step noted by the 1600 pulses/rev. We have added a handy conversion table to convert Pulses/Rev to Microsteps. Please see below:
 
Pulses/Rev Microsteps
800 1/4
1600 1/8
3200 1/16
6400 1/32
12800 1/64
25600 1/128
51200 1/256

On the HSS57 driver, The Switch Array is as follows:

Dip-Switch  Function
SW1 No Function
SW2 Motor Direction:
On = CW Off = CCW
SW3 Micro-step Setting
SW4 Micro-step Setting
SW5 Micro-step Setting
SW6 Micro-step Setting

Please note: the dip switch is in the ‘ON‘ position when it is facing downwards and in the ‘OFF‘ position when it is facing upwards. See below for 1/8th microstep with the motor direction set clockwise.

Dip-Switch Positioning
SW1 OFF
SW2 ON
SW3 ON
SW4 OFF
SW5 ON
SW6 ON
ELEC-HSS57-PP

Driver Settings: HBS57

The HBS57 driver has an 8 dip switch array. You can select the:

  • Motor type
  • Motor direction
  • Open-loop/closed loop mode
  • Microstep settings
We recommend 1/8th step noted by the 1600 pulses/rev. We have added a handy conversion table to convert Pulses/Rev to Microsteps. Please see below:
Pulses/RevMicrosteps
8001/4
16001/8
32001/16
64001/32
128001/64
256001/128
512001/256
 

On the HBS57 driver, The Switch Array is as follows:

Dip-SwitchMicrosteps
SW1Micro-step Setting
SW2Micro-step Setting
SW3Micro-step Setting
SW4Micro-step Setting
SW5Motor Direction:
On = CW, OFF = CCW
SW6Acceleration Assistance (AA):
SW6 On = AA – ON, SW6 OFF = AA – OFF
SW7Motor Type Selection
SW8Motor Type Selection

For Motor Type Selection (SW7 and SW8), please see below:

SW7SW8Motor Type
OFFON57 (Nema23)
ONOFF60 (Nema24)
OFFOFFOpen-loop Nema23 (4A ratIng)
Below is a HBS57 driver with configured for a Nema23 motor with 1/8th step micro stepping and turning clockwise. 

Please note: the dip switch is in the ‘ON‘position when it is facing downwards and in the ‘OFF‘ position when it is facing upwards. See below for 1/8th microstep with the motor direction set clockwise. 

Dip-SwitchMicrosteps
SW1ON
SW2OFF
SW3ON
SW4ON
SW5ON
SW6ON
SW7OFF
SW8ON
HBS57-PP
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