85-264 V
12/24/36/48V Semi-reg
500 W Series
Medical
AC Input:
DC Output:
Power:
RMS
.
Grade:
Technical Specification
PARALLEL OPERATION - MULTIPLE UNITS
Chassis configurations for Parallel Units
Specifications of Parallel Units
ACuQor units are available either open-frame or pre-mounted As a rule, units wired in parallel behave the same as single units.
at the factory. Up to 3 units can be mounted into a chassis, in Any specification will remain unchanged that is expressed in units
either side-by-side or stacked configurations. For a complete list of of voltage, time, frequency, or efficiency. Specifications expressed
options, see the “Part Numbering System” table on the last page, in terms of power, current, or capacitance, should be scaled by the
under “Package Type”, along with the Mechanical Drawings pages. number of units wired in parallel.
Only side-by-side configurations can be populated with 500W units,
since each includes a thermal pad underneath.
ACuQor units are individually calibrated at the factory, so that the
output voltage vs. output current characteristic is always consistent
(see Vout droop characteristic figures). As such, multiple units will
Interconnection of Parallel Units
ACuQor units mounted in 2 and 3 unit chassis are not connected share output current accurately. Full current is guaranteed from a
together. This allows the physical routing and connectivity of the bank of multiple units wired in parallel.
external wiring to be customized to each application. The following
table summarizes the recommended wiring to operate multiple
units in parallel:
Output Connector Signal
REMOTE_ENABLE
FAN_GOOD
Suggested Connection
Behavior with Multiple Units
Wire in parallel
Inputs activated simultaneously
“
“
“
“
“
Wired-OR outputs – can be pulled low by any unit during an abnormal condition.
AC_POWER_GOOD
DC_POWER_GOOD
VOUT(+), VOUT(-)
12V_STANDBY*
5V_STANDBY
“
“
Built-in droop characteristic ensures graceful current sharing.
“
Do not wire in parallel Fully regulated characteristic does not support current sharing. If placed in
parallel, only the output with the highest set-point will drive current.
*Note: Triple output models only.
Product # AQ0500MUxx Series
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-005046 Rev. 1
09/04/08
Page 9
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