Elmomc SimplIQ Analog Servo Amplifiers-Violin Operating M Manuel d'utilisateur télécharger pdf (Page 26)

Elmo Motion Control Rev 09/09 VIO-Velocity - Operating Manual

Page 22

Guidelines for connecting a non isolated amplifier with an isolating power transformer

Ground:

DC power common

Motor chassis

Amplifier's heat sink

4.3 DC power supply

DC power supply can be at any voltage in the range defined within the technical specifications. The supply

source must comply with the safety aspects of the relevant requirements in accordance with the most recent

version of the standard EN60950 or equivalent Low Voltage Directive Standard, all according to the

applicable over voltage Category. If the power source to the power supply is the AC line (through a

transformer), safety margins have to be considered to avoid activating the under/over voltage protection due

to line variations and/or voltage drop under load.

In addition to the above, the transformer must comply with the safety aspects of the relevant requirements

in accordance with the most recent version of the standard EN60742 (Isolating and Safety Isolating

Transformers). The nominal DC bus voltage should be in the following range:

1.2VDC

min

< VDC < 0.9VDC

max

VDC

min

- Minimum DC bus

VDC

max

- Maximum DC bus

Recommended minimum power supply capacitance for single phase connection:

Type of amplifier VIO-

25/50V

VIO-

15/55V

VIO-

10/100V

VIO-

15/100V

VIO-

6/200V

VIO-

15/200V

Recommended

capacitance

5600µF 5600µF 3300µF 5600µF 1500µF 5600µF

Table 9: Recomended Capacitance

The transformer power should be calculated to have the capability to deliver power to the amplifier

(including peak power), without significant voltage drops.

The power supply should be located as close as possible to the amplifier. Maximum distance is 30cm (1

foot).

While driving high inertia loads, the power supply must be equipped with a shunt regulator, otherwise, the

amplifier will be disabled whenever the capacitors are charged above the maximum voltage.

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