SECTION FIVE – COMPONENT DESCRIPTION
DS2000 USER’S MANUAL (rev.C)
5.2
5.2 HIGH POWER INPUT SECTION
The high power supply section has the following features:
• Three Phase AC Operation
• Direct Off-Line 230 V
rms
to 460V
rms
±10% Operation
• Soft-start (AC Inrush Current Limiting)
• Input Varistor Transient Protection
• Drive Ready Relay (DROK)
• Provision for External Recovery Resistor
• Integral Heat Sink and Cooling Fans
• Input 24V Logic Backup
• Internal inductance only for size E
These features are described in the next sections.
WARNING: High Voltage. Bus Bar’s can have voltage ≥810V
dc
even after switching off
(capacitive voltage). Discharge Time approx. 6 Minutes.
WARNING: High Voltage. The recovery resistor is connected to the Bus Bar’s and can have
voltage ≥810V
dc
.
WARNING: do not touch recovery resistor during operation to avoid scalds.
5.2.1 CIRCUIT DESCRIPTION
The high power supply consists of four functional blocks:
• High voltage rectification and filtering
• Soft-start of AC mains power-on
• Low voltage control power supply
• Recovery circuit
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