Datasheet

UF20.481
UF-Series
48V, 20A, 100MS, BUFFER MODULE
16. FRONT SIDE AND USER ELEMENTS
Fig. 16-1 Front side
A
Supply Voltage Terminals
Quick-connect spring-clamp terminals, two per polarity
+ Positive supply voltage terminal
– Negative (return) supply voltage terminal
B
Chassis Ground Terminal
Quick-connect spring-clamp terminals
Connection of the chassis to ground (earth) is optional
and only required for a view specific applications.
C
Signal Connector
4-pole plug connector with screw termination comprises
the following signals:
- “Active” signal, for details see chapter 9.
- “Ready” signal, for details see chapter 10
- “Inhibit” input, for details see chapter 11
D
Status LED
This green LED indicates that the following information:
- OFF: Capacitors are discharged or supply voltage is
below 44V.
- ON: Capacitors are fully charged
- Slow flashing (1.25Hz):
Capacitors are getting charged.
- Fast flashing (10Hz):
Capacitors are getting discharged.
E
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 45V.
Option 2: Variable mode (Jumper in position 1-2)
Unit switches to buffer mode when input voltage decreases
by 2V. Voltage changes slower than 1.1V/s will be ignored if
the voltage is above 45V. Below 45V buffering starts
immediately.
For more details see chapter 5.
Oct. 2016 / Rev. 2.0 DS-UF20.481-EN
All parameters are specified at 48V, 20A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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