Datasheet

UF20.241
–
U-Series
24V, 20A, 200ms
Dec 2005 / Rev. 1.2 / DS-UF20.241-EN / All parameters are specified at 24V, 20A and 25°C ambient unless otherwise noted.
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10. OPERATING DIAGRAM
Fig. 10-1 Operating diagram Fig. 10-2 Signals schematic
Ready
t
Active
t
Optocoupler high ohmic
Optocoupler high ohmic
Optocoupler low ohmic
Optocoupler
low ohmic
V
Mains
t
V
Buffer
Capacitor
t
V
out
t
Charging Mode
LED
t
Buffer Mode
Hold-up Time Power Supply
Standby
Mode
10Hz1.25Hz
8 Ready
7 Active
6 +
5,1V
3mA
9 Inhibit
UF20
11. ACTIVE AND READY SIGNAL, INHIBIT INPUT
Active signal (Pin 7)
low ohmic while buffer capacitors are discharging
Signal voltage max. 35Vdc
Signal current max. 10mA
Voltage drop across opto-coupler typ 0.9V / 3V at 1mA / 5mA, while opto-coupler is low ohmic
Leakage current max. 50µA while opto-coupler is high ohmic
Isolation nom. 500Vac Signal port to power port
Ready signal (Pin 8)
low ohmic when buffer is fully charged
Signal voltage max. 35Vdc
Signal current max. 10mA
Voltage drop across opto-coupler typ 0.9V / 3V at 1mA / 5mA, while opto-coupler is low ohmic
Leakage current max. 50µA while opto-coupler is high ohmic
Isolation nom. 500Vac Signal port to power port
Inhibit input (Pin 9)
“High” input signal initiates unit shutdown and buffer discharge
Signal voltage max. 35Vdc
Signal current max. 4mA current limited
Shut-down threshold min. 6Vdc Unit is in shut-down mode above this threshold level
max. 10Vdc
Isolation nom. 500Vac Signal port to power port
Wiring diagrams can be found in section 21.