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Motion Control > Stepper Systems > Power Supplies and Regen
Power Supplies and Regeneration for Stepper Systems
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Linear power supplies provide DC power with fused overcurrent protection, and an auxiliary 5VDC supply to power control logic. Switching power supplies are suitable for applications without large fluctuations in load, or aggressive deceleration or regen requirements. Optional regen clamps and braking resistors are available to help dissipate excess regeneration energy.
Stepper Power Supplies and Regen
Category Selection
High Performance Microstepping Power Supplies
- SureStep® Stepper Power Supplies
- RHINO Power Supplies
- SureStep® Regen Braking Accessories
Complete 
SureStep Linear Power Supplies
These unregulated linear power supplies offer full load outputs of 32 VDC/4A, 48 VDC/5A, 48 VDC/10A, 70 VDC/5A; and are perfectly suited to power SureStep stepper drives and stepper motors.
- STP-PWR-3204 (32 VDC @ 4A)
- STP-PWR-4805 (46.5 VDC @ 5A)
- STP-PWR-4810 (46.5 VDC @ 10A)
- STP-PWR-7005 (70 VDC @ 5A)
- 120/240 VAC selectable input
- 32V, 48V, 70V DC output models available
- Linear power supplies are much less susceptible to regeneration from the motor than switching supplies
- All models have additional 5VDC, 500 mA regulated logic supply
- Fusing included for both incoming AC and outgoing DC
- 5V supply has electronic overload protection
RHINO Switching Power Supplies
RHINO PSBx switching power supplies have been tested and are now recommended power supplies for the SureStep drives. If regeneration is a problem, a regen clamp may be needed in more cases with a switching supply than a linear power supply.
- PSB12-xxx (12 VDC)
- PSB24-xxxS (24 VDC)
- PSB48-xxxS (48 VDC)
- Universal input voltages,
PSB Series - 120/240 VAC / 120–375 VDC
SureStep Regen Braking Accessories
In most stepper systems, a regen clamp (available as optional accessories) is often required to limit increased power supply bus voltage when the motor is decelerating under load.
Features
- Built-in 50W power resistor for more continuous current handling
- Mounted on a heat sink
- Voltage range: 2480 VDC; no user adjustments required
- Power: 50W continuous; 800W peak
- Indicators (LED):
- Green = power supply voltage is present
- Red = clamp is operating (usually when tepper is decelerating) - Protection: The external power supply is internally connected to an "Input Diode" in the regen clamp that protects the power supply from high regeneration voltages.
STP-DRVA-RC-050A Regen Clamp
- Three drive connections, 7A max per channel, 15A total output current
- Enclosed housing
- Removable terminal blocks (replacement kit STP-CON-4)
- Uses 18-20 AWG wire for connections
The STP-DRVA-RC-050A Regen Clamp is
$55.00
(STP-DRVA-RC-050A)
STP-DRVA-RC-050 Regen Clamp
- External 100W resistor available
- Multiple drives in parallel up to 20A total output current
- Non-removable terminal blocks
- Uses 12-18 AWG wires for connections
The STP-DRVA-RC-050 Regen Clamp is
$96.00
(STP-DRVA-RC-050)
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