N8 Z2/22 Rotary and part-turn actuator
For Ex zones 2 and 22, the successful N series has been further developed to meet the European explosion protection standards. The actuators have the ATEX certificate number: EPS 19 ATEX 1 047 X.
For the ATEX actuator N8, an additional gear is mounted to increase the torque. The torque range increases from 180 Nm up to 500 Nm. A wide range of options makes this series the optimum solution in plant engineering.
The design of the housing made of die-cast aluminium and zinc in combination with a permanently lubricated steel gearbox with sintered bronze plain bearings allows the use in a wide temperature range and in a rough operating environment.
An electronic positioner (option) can simplify the integration of the rotary and part-turn actuator into the control of complex systems.
Motor
- Single-phase AC synchronous motor with permanent magnets, reversible 230 V ± 10%, 50/60 Hz ± 5% (data sheet N8)
- 100% duty cycle as standard
- Short start/stop times
- Insulation class B to VDE 0530
- Synchronous motors maintain speed and positioning time irrespective of the load
- Tropical insulation
- Options:
- Three-phase motor (data sheet N8 DS)
- DC motor (data sheet N8 DC)
- Custom voltages
- Custom frequencies
Gearbox
- Spur gearing with straight-toothed steel gears
- Rugged, maintenance-free
- Permanently lubricated gears
- Self-lubricating sintered bronze bearings
- Encapsulated version, operates in any position
Supplementary gearbox
- Planetary gearbox with hardened gears
- Permanently lubricated gears
- Self-lubricating sintered bronze bearings and ball bearings
- Housing made of aluminium
Output shaft
- Output shaft with square socket WAF 22 mm (F10 DIN ISO 5211)
- Diameter 36 mm with feather key
- Other output shafts on request
Electrical connection
- Connection terminals positioned centrally close to cable entry
- Screw-type terminals
- Two free slots to retrofit additional auxiliary position switches
- Retrofitting of extensions possible without any problems through additional PCB terminals
Controller
- Open/close signal
- Options:
- Additional potential-free contacts
- Electronic position controller ESR-N (integrated in the actuator or external)
- Potentiometer 200Ω … 10 kΩ
- Electromechanical emergency torque limit switch shuts off the motor if a blockage occurs
Ambient temperature
- -15 °C to +60 °C
- 0 °C to +60 °C when an electronic position controller ESR-N is used
- Options:
- Up to +80 °C, duty cycle S3-50%
- Down to -40 °C
