Rockwell Automation Publication 1606-RM105A-EN-P - July 2020
5
Terminology and
Abbreviations
Product Overview
The 1606-XLS960 buffer module is a supplementary device for regulated DC
24V power supplies, which can be used for various purposes:
•
Deliver DC-power to bridge failures of the DC voltage supply system.
•
Extend the hold-up time after loss of the AC power.
•
Deliver extra short-term peak current above the current rating of the
power supply.
The buffer module uses service-free electrolytic capacitors for storing the
energy, which allows usage even at ambient temperatures up to +70 °C (158 °F).
The buffer module does not require any control wiring. It can be added in
parallel to the load circuit at any given point.
Buffer modules can be connected in parallel to increase the output ampacity or
the hold-up time.
Product features:
•
Buffering with electrolytic capacitors instead of lead acid batteries
•
Buffering of 24V loads
•
Minimum hold-up time 0.16 seconds at 40 A, longer hold-up time at
lower loads
•
Clear status indication by LED status indicator and signaling terminals
•
Extra large screw terminals
Terminology
Descriptions
Power supply mode
Describes a condition where the supply voltage is in the rated supply voltage range and the
supplying power supply can deliver enough current for the buffer module and the load. This
mode can also be called “Normal mode”.
Buffer mode
Describes a condition where the input voltage is below the transfer threshold level, the unit
is running on capacitors (buffering), and the output is loaded within the allowed limits. The
mode can also be called “Capacitor mode”.
Inhibit mode
Describes a condition where buffering is disabled on purpose (for example: for service
actions).
DC 24V
A value that is displayed with the AC or DC before the value represents a nominal voltage
with standard tolerances included. For example: DC 12V describes a 12V battery
disregarding whether it is full (13.7V) or flat (10V).
24V DC
A value with the unit (V DC) at the end is a momentary value without any additional
tolerances included.
nom
Indicates a nominal value.
typ
Indicates a typical value.
— (alone in table
cell)
A single dash alone in a table cell indicates there is no information to be included in that
cell.