Watch list

Positioning system

PSW 31_-8


Positioning system with protection class IP 68


Positioning system with protection class IP 68 for wet area applications

  • Positioning system with absolute measuring system, without battery
  • Hygienic design
  • Galvanic separation of motor and control unit prevents the control unit from being affected by any EM interference in the motor 
  • Easy mounting with hollow shaft possible (also available with solid circular shaft)
  • Absolute encoder eliminates the need for reference runs during system setup and installation of replacements
  • Easy address assignment directly on the device using integrated address switches (not for IO-Link)
  • Regulation of the current torque prevents overloading and unnecessary run aborts
  • Strong breakaway torque enables safe start-up even after an extended standstill
  • Intelligent running behaviour. Recognises the difference between obstacles and dirt
  • Spindle offset run: Excludes inconsistencies due to lash in the spindle.
  • Condition monitoring of supply voltage, drag error (permits optimum adjustment of current position), power consumption and torque

Longitudinal construction

Nominal torque / nominal rated speed

PSW 311-8: 1 Nm / 180 rpm
PSW 312-8: 2 Nm / 100 rpm
PSW 315-8: 5 Nm / 35 rpm

Bus communication
CANopen, PROFIBUS DP, DeviceNet, Modbus RTU,
Sercos, EtherCAT, PROFINET, EtherNet/IP, POWERLINK, IO-Link

Positioning accuracy

Output shaft
8 mm solid shaft (PSW 31_-8-V) or
8 mm hollow shaft with adjustable collar

Positioning range
250 rotations, not subject to mechanical limits

Supply voltage
24 VDC

Protection class
IP 68 at standstill, IP 66 during rotation
(tested with water)

Supplied with 2nd data bus connection and address switches as standard (not for IO-Link).

Cover cap for the connection socket can be supplied on request.

Solid shaft (optional)

NRTL certification in accordance with UL, CSA, ANSI and CE optional (standard CE)