Elmo power supply GOLD-MAESTRO01 & GOLD-MAESTRO02

Power Supplies for Industrial Environment:

The power supplies are designed, manufactured and tested to meet Extreme Environmental Conditions. The durability is qualified, verified and tested according to the most severe Environmental, EMC and Safety Standards exceeding the traditional and senior Military STDs

Servo operation requires a voltage source that is reliable, simple and most importantly one that is able to deliver “momentary” high power demands and that “conducts” power from and to the motor (4 quadrants).

In addition, the power supply must withstand a “hostile” operating environment such as: voltage instabilities, high spikes, transients, bursts, EMI, high mechanical vibrations and mechanical shocks, extreme temperature, and high humidity.

The power consumption behavior of a servo application contains many accelerations and declarations that require momentary high power peaks, while the average power required is significantly lower.

The Power Supply has two major “functional servo” tasks:

1. To supply the DC bus voltage required to power the servo drives.
2. To “absorb” the regenerating/braking power from the motor and the mechanical load.

Functionalities of Servo Power Supply

Create the DC bus source designed to meet the voltage required to fulfill the servo system needs

Be able to deliver sufficient power to drive the momentary peaks and averages of the mechanical loads

Have reasonable voltage stability. No need for a regulated or stabilized DC bus ─ the only concern should be satisfying the minimum voltage requirements to achieve the required speed and torque.

Limited and controlled voltage variations. Ensure that the maximum voltage limits of the servo drives will not be exceeded.

Bi-directional energy flow. In servo operation it is essential that the power supply will be able to deliver power to the load and absorb power from the load.

High frequency power handling. The servo drives’ operation creates PWM high frequency currents flowing on the DC bus. These currents must be absorbed and properly filtered by the power supply.

Environmental requirements:

Safety standards

EMC, immunity and emission

Inrush current control

Meeting environmental requirements (vibrations, temperature, humidity, etc.)

To fulfill the above the Power Supply for servos requires:

Rectifying the AC voltage input into DC bus voltage.

bi-directional “Energy Reservoir” for continuous and instant peak power demands from the servo system.

A shunt regulator for absorbing energy from the load in case of regeneration or braking.

An inrush current limiter.

A high-frequency current ripple “swallower.”

Filtering EMI from and to the servo drives.

Line voltage transient protection.

Safety.