ElmoMC SimplIQ Analog Servo Amplifiers-Cymbal - Manual (Page 29)

Cymbal Installation Guide Installation
MAN-CYMIG (Ver. 1.3)
29
3.6. DC Power Supply
The DC power supply can be at any voltage in the range defined in the technical specifications
(Chapter 5 of this guide). 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 an isolated or a non‐
isolated transformer), safety margins must be considered, in order to avoid activating the
undervoltage/overvoltage 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 EN 60742 (Isolating
and Safety Isolating Transformers). The nominal DC bus voltage should be in the following
range:
1.2 V
dcmin
< Vdc < 0.9 V
dcmax
Where:
V
dcmin
is the minimum DC bus
V
dcmax
is the maximum DC bus
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. 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,
during motor break down.
3.6.1. Powering Up
After the Cymbal is connected to its devices, the Cymbal is ready to be powered up.
Caution: Before applying power, ensure that the DC supply is within the specified range
and that the proper plus‐minus connections are in order.
3.6.2. Initializing the System
After the Cymbal has been connected and mounted, the system must be set up and initialized.
3.7. Heat Dissipation
For full power output capability the Cymbal is designed to be mounted on an external heatsink.
It is highly recommended that the “Wall” on which the Cymbal is mounted will have heat
dissipation capabilities. The Cymbal at “free air convection” (without an additional heatsink)
can dissipate around 12 W for 40 °C ambient temperature and not exceeding 80 °C on the
heatsink.
When “Free Air Convection” is sufficient for the application it is recommended to leave
approximately 10 mm of space between the Cymbal's heatsink and any other assembly.
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