Allen-Bradley 1606-XLS960BUFFER, Reference Manual, Page: 14 / 24

14 Rockwell Automation Publication 1606-RM105A-EN-P - July 2020
Front Side and User
Elements
Figure 11 - Front Side of Buffer Module
User Elements
1 Chassis Ground Terminal
To be connected on the top side of the
housing with a ring-type terminal (ring
cable lug) which is suitable for an M4
screw. Connection of the chassis to
ground (earth) is optional and only
required for specific applications.
2 Supply Voltage Terminals
Screw terminals, two negative pins.
+ Positive supply voltage terminal
– Negative (return) supply voltage terminal
3 Status Indicator
This green LED indicates the following
information:
- OFF: Capacitors are discharged or supply
voltage is below 22V.
- ON: Capacitors are fully charged
- Slow flashing (1.25 Hz): Capacitors are
getting charged.
- Fast flashing (10 Hz): Capacitors are
getting discharged.
4 Back-up Threshold Jumper
-Option 1: Fixed mode (Jumper in position
2-3). The unit switches to buffer mode as
soon as the voltage falls below 22.5V.
-Option 2: Variable mode (Jumper in
position 1-2). Unit switches to buffer mode
when input voltage decreases by 1V.
Voltage changes slower than 0.54 V/s is
ignored if the voltage is above 22.5V.
Below 22.5V buffering starts immediately.
For more details, see
Select the Backup
Threshold Voltage on page 9 .
5 Signal Connector
4-pole plug connector with screw
termination comprises the following
signals:
- “Active” signal, for details see
Active
Signal on page 11 .
- “Ready” signal, for details see Ready
Signal on page 11 .
- “Inhibit” input, for details see Inhibit
Input on page 12 .
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