Product # AQ0500IUxx

Phone 1-888-567-9596

www.SynQor.com

Doc.# 005-005054 Rev. E

09/14/15

Page 10

Technical Specification

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:

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.

PARALLEL OPERATION - MULTIPLE UNITS

Output Connector Signal

Suggested Connection

Behavior with Multiple Units

REMOTE_ENABLE

Wire in parallel

Inputs activated simultaneously

FAN_GOOD

“

Wired-OR outputs – can be pulled low by any unit during an abnormal condition.

AC_POWER_GOOD

“

“

DC_POWER_GOOD

“

“

VOUT(+), VOUT(-)

“

Built-in droop characteristic ensures graceful current sharing.

12V_STANDBY*

“

“

5V_STANDBY

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.