SYNAPTICON SOMANET Circulo Manual de usuario

Power supply,

phases and brake

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Table of Contents

1 Power supply, phases and brake

1.1 Power Terminal and Motor phases

1.1.1 Using a PELV or SELV power supply

1.1.2 Warning about using contactors behind the power supply

1.1.2.1 Protective Earth and Functional Earth

1.2 Connecting a brake

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

1 Power supply, phases and brake

1.1 Power Terminal and Motor phases

Circulo 7

Circulo 9

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

Important

The motor and power cables must be twisted for EMC reasons.

Note

SOMANET servo drives are densely packed with high-performance components. Even at

idle/torque off, several components such as power supplies, cause the servo drive to get warm,

especially when it’s not connected to any heat conducting structure. The servo drives’ power

stages and control algorithms were optimized for efficiency at high power output and actually

make them one of the most efficient servo drives available. The heat generation is not linear, which

makes it actually more noticable at idle or low power. Please ensure by design of your mounting

situation that the heat interface is connected to sufficient structure to appropriately dissipate

generated heat.

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

1.1.1 Using a PELV or SELV power supply

It’s recommanded to use a protected extra-low voltage supply (PELV) instead of a safety extra-low

voltage supply (SELV).

If a SELV is used, it’s possible that the isolation from the earth can be violated through our drive (e.g.

through heatsink or mechanical mountings) and the supply becomes PELV.

1.1.2 Warning about using contactors behind the power supply

Attention

Our servo drives are designed for voltages between 24 V and 48 V (60 V Max), they should be

run with an appropriate extra-low voltage supply. Please

run with an appropriate extra-low voltage supply. Please do not use contactors behind the

do not use contactors behind the

power supply

power supply since the transient-voltage-suppression diodes could get damaged due to the

since the transient-voltage-suppression diodes could get damaged due to the

power-up voltage increase (Surge). This is likely to happen when the power up occurs fast and

can lead to complete failure

can lead to complete failure of your servo drive.

of your servo drive.

If contactors behind the power supply are used, it’s necessary to

If contactors behind the power supply are used, it’s necessary to include an uni-directional

include an uni-directional

TVS diode type 1.5KE62A-E3/54

TVS diode type 1.5KE62A-E3/54* between Main Power Supply and Ground of the terminal.

* between Main Power Supply and Ground of the terminal.

* this model has been successfully tested by Synapticon. Other products with the same

specifications may also be appropriate but can’t be recommended.

In case you are running several servo drives behind a contactor, please use an uni-directional TVS

diode on each drive because of the inductances of the wiring.

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

1.1.2.1 Protective Earth and Functional Earth

Protective Earth (PE) and the Ground (GND) of the electronic boards are electrically isolated.

The blank bottom side of the heatsink has a flat conductive surface and can be used as a connection

for Protective Earth (PE) or Functional Earth (FE).

To fulfill the PE requirements and also have a better EMI shielding around the electronic boards, it is

necessary to electrically connect the conductive surfaces (marked yellow and green in the following

picture) to the chassis of the motor or the robot.

Note

Please ensure that the chassis is properly grounded.

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

1.2 Connecting a brake

If your system has an attached brake, please connect the brake cables to the brake connector. These

two threads should be twisted together or at least be paired to have a minimum area between them.

Note

This brake integrates Safe Brake Control functionality (SBC).

Circulo 7

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

Circulo 9

Important

Please make sure the servo drive is properly grounded.

Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.

B.1) / Installation Guide / Wiring instructions / Power supply,

phases and brake

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