Technical Specification
PARALLEL OPERATION - MULTIPLE UNITS
ELI
PR
M
ARY
IN
AC Input:
85-264 V
RMS
DC Output:
12/24/36/48V
Semi-reg
.
Power:
500 W Series
Grade:
Medical
Chassis configurations for Parallel Units
ACuQor units are available either open-frame or pre-mounted
at the factory. Up to 3 units can be mounted into a chassis, in
either side-by-side or stacked configurations. For a complete list of
options, see the “Part Numbering System” table on the last page,
under “Package Type”, along with the Mechanical Drawings pages.
Only side-by-side configurations can be populated with 500W units,
since each includes a thermal pad underneath.
Interconnection of Parallel Units
ACuQor units mounted in 2 and 3 unit chassis are not connected
together. This allows the physical routing and connectivity of the
external wiring to be customized to each application. The following
table summarizes the recommended wiring to operate multiple
units in parallel:
Output Connector Signal
Suggested Connection
Specifications of Parallel Units
As a rule, units wired in parallel behave the same as single units.
Any specification will remain unchanged that is expressed in units
of voltage, time, frequency, or efficiency. Specifications expressed
in terms of power, current, or capacitance, should be scaled by the
number of units wired in parallel.
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
share output current accurately. Full current is guaranteed from a
bank of multiple units wired in parallel.
Behavior with Multiple Units
REMOTE_ENABLE
FAN_GOOD
AC_POWER_GOOD
DC_POWER_GOOD
VOUT(+), VOUT(-)
12V_STANDBY*
5V_STANDBY
Wire in parallel
“
“
“
“
“
Do not wire in parallel
Inputs activated simultaneously
Wired-OR outputs – can be pulled low by any unit during an abnormal condition.
“
“
Built-in droop characteristic ensures graceful current sharing.
“
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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