SOMANET Servo Node Circulo 1800 – Synapticon
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SOMANET Servo Node Circulo 1800

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With its circular shape and hollow shaft with a diameter of 40 mm, SOMANET Servo Node Circulo 1800 is ideal for a fully integrated Axis which are mainly used in Collaborative Robots. Circulo Nodes can have up to two integrated encoders (17-18 bits) with a battery-based multi-turn option which automatically calibrates. In addition, the nodes offer onboard security features such as STO and SBC via a 24V I/O. Because the cable connections can easily be looped through, the wiring for EtherCAT, Logic Voltage, STO and SBC are extremely simple. In addition, there is an interface to external encoders for ABZ, SSI, BiSS-C and A-format. Circulo also offers an interface and mechanical device for a Cobot-type locking brake and a motor temperature sensor (PT100, PT1000, KTY).

SOMANET Servo Node Circulo: the Worlds first industrial standard for collaborative robots.

  • hollow shaft for optimized cable guiding
  • 2 internal encoders (optional)
  • battery-based multi-turn option
  • optional integrated brake
  • STO/SBC on-board
  • external encoder interface for ABZ, SSI, BiSS-C and A-format
  • modular structure for fast modification
  • torque-based performance control
  • smart brake
  • Dual-Loop Control
  • Model-predictive Field-oriented Control, allow a low heat dissipation of the drives while keeping up high motion control frequencies

SOMANET Servo Node Circulo is specifically designed for the needs of Collaborative Robotic Arms.

DocumentationDownload CAD model

SKU: SN-024-1 Category:
Additional information
Rated supply voltage DC24-48 V
Maximum voltage DC65 V
Continuous phase current RMS24 A
Maximum phase current RMS (Load-cycle: 0.5s every 1.5 s)60 A
Maximum efficiency99 %
Standby power consumptionTBD
Supported motorsBLDC, PMSM
Number of phases3
Hardware protectionsOvercurrent, overvoltage,undervoltage, overtemperature, PWM deadtime, PWM shoot through
Sensors on-board3 x I_phase, U_DC, t_MOSFET, t_core
Encoder interface (ext.)1 x ABZ / SSI / BiSS-C /Nikon / Tamagawa
Brake pwr. output1A @ 48V
GPIO5x DIO(3.3/5V), 1x DO(3.3/5V), 1x DI(24V)

1x Analog In Single Ended (0-10V),1x Analog In Differential (+-5V)
Integrated encoder (motor)Yes, absolute (optional)
Integrated encoder (joint)Yes, absolute (optional)
Integrated brakeYes (optional)
Weight168 g
Dimensions72.20 × 72.20 × 23 mm
Hardware Status