20
Rockwell Automation Publication 1606-RM028A-EN-P - September 2021
The 1606-XLSRED40HF redundancy module does not require an additional
auxiliary voltage and is self-powered, even if there is a short circuit across the
output.
Due to the low-power losses, the module is slender and only requires a
46 mm (1.81 in.) wide DIN rail.
Repetitive Pulse Loading
A load current is not typically constant and varies over time. The power supply
unit is designed to support loads with a higher short-term power requirement
without damage or shutdown, or BonusPower. An output power manager
controls the short-term duration. BonusPower is repeatedly available. If the
BonusPower load lasts longer than the hardware controller allows, the output
voltage will dip and the next BonusPower is available after the BonusPower
recovery time has elapsed (see
).
To avoid voltage dips, follow the following rules:
•
The power demand of the pulse must be below 150% of the nominal
output power.
•
The duration of the pulse power must be shorter than the allowed
BonusPower time (see
•
The average (RMS) output current must be below the specified
continuous output current. If the RMS current is higher, the unit
responds with a thermal shutdown after a time. Use the maximum duty
cycle curve in
to check if the average output current
is below the nominal current.
•
The duty cycle must be below 0.75.
Figure 36 - Redundancy Module
Figure 37 - Typical 1+1 Redundant Configuration for 20 A with a Dual
Redundancy Module
L
N
PE
I
L N PE
+ +
- -
48V, 20A
Parallel Use
Single Use
DC-
OK
1606-XLS960F
48…54V 960 W
Power Supply
AC Input
L N PE
+ +
- -
48V, 20 A
Parallel Use
Single Use
DC-
OK
1606-XLS960F
48…54V 960 W
Power Supply
AC Input
48V
20 A
Load
Failure
Monitor
1606-XLSRED40HF
Redundancy
Module
Input
1
Input
Output
2
+
-
+
-
+
-
I
