Allen-Bradley 1606-XLS960BUFFER, Reference Manual, Page: 8 / 24

8 Rockwell Automation Publication 1606-RM105A-EN-P - July 2020
Electrical Ratings
Attributes Values Notes
Supply voltage Nom
DC 24V
-20%/+25%
—
Supply voltage range
(1)
Nom 19.2…30V DC —
Normal operating voltage range
(2)
Typ 23…30V DC —
Transfer voltage for switching into
buffer mode
Typ 22.5V DC Back-up threshold jumper set to “22.5V fixed”
Typ V
IN
– 1V Back-up threshold jumper set to “V
IN
– 1V”
— — See also Select the Backup Threshold Voltage on page 9 .
Transfer voltage for switching from
buffer mode into power supply mode
Typ 22.5V DC Back-up threshold jumper set to “22.5V fixed”
Typ V
BUFFER
+ 1V Back-up threshold jumper set to “V
IN
– 1V”
— — See also Select the Backup Threshold Voltage on page 9 .
Buffer voltage Typ Same as the transfer voltage for switching into buffer mode.
Ripple and noise voltage
- in buffer mode
- in power supply mode
Max 200 mVpp
Generated by the buffer module. Defined at 20 Hz to 20 MHz, 50 Ω.
The the power supply defines the ripple and noise voltage.
Current consumption
Typ 80 mA When capacitor is fully charged
Min 400 mA During charging of the capacitors
Max 600 mA During charging of the capacitors
Power dissipation Typ 1.9 W When capacitor is fully charged
Buffer current Min 40 A —
Buffer current overload behavior — Electronically limited, buffering stops and capacitor gets discharged below 17V. See Figure 4 .
Allowed voltage between supply
voltage and chassis ground
Max 60V DC or 42.4V AC Continuous, IEC 62477-1
Capacitive and inductive loads — No limitation —
(1) Supply Voltage Range: At voltages within the input voltage range, control functions such as LEDs, monitoring features, and relay contacts, are
functioning normally. Within the input voltage range, the unit can either be in power supply mode or in buffer mode.
(2) Normal Operating Voltage Range: The normal operating voltage range describes the supply voltage, which supports the full functionality of the
buffer module (including charging) but without entering the buffer mode.
Figure 3 - Selection of an Appropriate Power Supply
Figure 4 - Output Characteristic in Buffer Mode,
22.5V Fixed Mode, typ
Internal
current
consumption
Current
consumption
for charging
Load
Current
Power
Supply
Current
Buffer Voltage
0
4 0 0
4
8
12
28V
16
20
64 A 24 8 16 32 48 56
Output Current
24
22.5V
Buffering stops
below 17V