SYNAPTICON SOMANET Circulo User manual

Power supply,
phases and brake
Documentation v 3.3.0 | Build: 2020-06-26
© 2020 Synapticon GmbH

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
3
3
5
5
6
7
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1 Power supply, phases and brake
1.1 Power Terminal and Motor phases
Circulo 7
Circulo 9
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Important
Important
The motor and power cables must be twisted for EMC reasons.
The motor and power cables must be twisted for EMC reasons.
Note
Note
SOMANET servo drives are densely packed with high-performance components. Even at
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,
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
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
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
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
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
situation that the heat interface is connected to sufficient structure to appropriately dissipate
generated heat.
generated heat.
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B.1) / Installation Guide / Wiring instructions / Power supply,
phases and brake
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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
Attention
Our servo drives are designed for voltages between 24 V and 48 V (60 V Max), they should be
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
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
* this model has been successfully tested by Synapticon. Other products with the same
specifications may also be appropriate but can’t be recommended.
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,
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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
Note
Please ensure that the chassis is properly grounded.
Please ensure that the chassis is properly grounded.
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B.1) / Installation Guide / Wiring instructions / Power supply,
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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
Note
This brake integrates Safe Brake Control functionality (SBC).
This brake integrates Safe Brake Control functionality (SBC).
Circulo 7
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Circulo 9
Important
Important
Please make sure the servo drive is properly grounded.
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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