SYNAPTICON SOMANET Circulo Series User manual

Power supply and
motor brake
Documentation v 3.5.1 | Build: 2020-08-07
© 2020 Synapticon GmbH

Table of Contents
1 Power supply and motor brake
1.1 Power Terminal
1.2 Motor phases
1.2.1 Using a PELV or SELV power supply
1.2.2 Warning about using contactors behind the power supply
1.3 Connecting a brake
3
3
3
4
4
5
Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.
A.2) / Installation Guide / Wiring instructions / Power supply and
motor brake
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1 Power supply and motor brake
1.1 Power Terminal
1.2 Motor phases
Important
The motor and power cables must be twisted for EMC reasons.
Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.
A.2) / Installation Guide / Wiring instructions / Power supply and
motor brake
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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 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.
1.2.1 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.
1.2.2 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 do not use contactors behind the power
supply 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 of your servo drive.
If contactors behind the power supply are used, it’s necessary to include an uni-directional TVS
diode type 1.5KE62A-E3/54* 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.
Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.
A.2) / Installation Guide / Wiring instructions / Power supply and
motor brake
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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.
1.3 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).
Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.
A.2) / Installation Guide / Wiring instructions / Power supply and
motor brake
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Important
Please make sure the servo drive is properly grounded.
Hardware Manuals / SOMANET Circulo / SOMANET Circulo (rev.
A.2) / Installation Guide / Wiring instructions / Power supply and
motor brake
© 2020 Synapticon GmbH | Daimlerstraße 26 | D-71101 Schönaich Documentation v 3.5.1 | Build: 2020-08-07 6/6