ElmoMC SimplIQ Analog Servo Amplifiers-Piccolo Installation - Manual (Page 22)

Piccolo Installation Guide Installation
MAN-PICIG (Ver. 2.301)
www.elmomc.com
22
3.7. DC Power Supply
The DC power supply can be at any voltage in the range defined in Chapter 5: 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 must be considered, in order 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:
1.2 V
dcmin
< V
dc
< 0.9 V
dcmax
where:
V
dcmin
is the minimum DC bus
V
dcmax
is the maximum DC bus
The recommended minimum power supply capacitance for single-phase connections is as
follows:
Amplifier Voltage Range 50 - 55 V 100 V 200 V
Recommended capacitance 5600 μF 3300 μF 1500 μF
The transformer power should be calculated such that it will be able 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. The maximum
distance is 30 cm (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.