PST8072 Stepper Driver, 7.2 A

The stepper drive PST8072 is a versatility fully digital stepping drive based on a DSP with advanced control algorithm. It brings a unique level of system smoothness, providing optimum torque, nulls mid-range instability and good high speed performance. Motor auto-identification and parameter auto-configuration technology offers optimum response with different motors. The driven motors can run with much lower noise, lower heating, smoother movement than most stepping drives on the market. The stepper drive PST8072 is suitable for a wide range of stepping motors, from NEMA 23 to NEMA 34. It can be used in various kinds of machines, such as medical machines, laser cutters, laser markers, high precision X-Y tables, labeling machines, and so on. Its unique features make the PST8072 an ideal solution for applications that require low-speed smoothness and good high speed performance.

Electrical Specifications:

Output current:

Min: 0.5

Max: 7.2 (6.0 RMS)

Unit: A

Supply voltage:

Min: +24

Typical: +48

Max: +75

Unit: VDC

Logic signal current:

Min: 7

Typical: 10

Max: 16

Pulse input frequency:

Min: 0

Max: 200

Unit: kHz

Isolation resistance:

Min: 500

Unit: MOHM

Function Description

• Micro step Setting: Micro step resolution is programmable. When not in software configured mode, micro step resolution is set by SW5, 6, 7, 8 of the DIP switch. In order to avoid losing steps, do not change the micro step resolution on the fly.
• Current Setting: Output current is programmable. When not in software configured mode, operating current is set by SW1,2,3 of the DIP switch, which is Up to 7.2A
• Automatic Standstill Current Reduction: SW4 is used for the automatic standstill current reduction, self-test and auto-setup function. When the former active, the
• current will be automatically reduced to 60% of the selected operating current 0.4 second after the last pulse. Theoretically, this will reduce motor heating to 36% (due to P=I2xR) of the original value.
• Self-test and Auto-setup: If the user changes the status/position of SW4 twice in 1 second, the drive will self-test the driving motor and auto setup control parameters, offering optimum performance with different motors.
• Control Signals: PUL+ and PUL- are for the pulse command signal. DIR+ and DIR- are for the direction control signal. ENA+ and ENA are for the enable/disable control signal.
• Motor Connector: A+, A- and B+, B- are for motor connections. Exchanging the connection of two wires for a coil to the drive will reverse default motion direction.
• Power Connector: Recommended to use power supplies with output of +24 to 75VDC, leaving space for power fluctuation and back-EMF.
• Indicators: There are two LED indicators on the drive for power and alarm signals. When the Green LED is on, the drive is powered up. When the Red LED is on, the drive is in fault status. When in fault status, the motor shaft will be free. Reset the drive by repowering it to make it function properly after solving problem(s).

What’s in the box
1 x PST8072 Stepper Driver, 7.2 A