User manual

CS3.241
C–Series
24V, 3.3A, SINGLE PHASE INPUT
September. 2007 / Rev. 1.1 DS-CS3.241-EN
All parameters are specified at 24V, 3.3A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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7. INPUT INRUSH CURRENT SURGE
A NTC limits the input inrush current after turn-on of the input voltage. The charging current into EMI suppression
capacitors is disregarded in the first microseconds after switch-on.
AC 100V AC 120V AC 230V
Inrush current max. 24A
peak
28A
peak
54A
peak
At 40°C cold-start
typ. 20A
peak
23A
peak
45A
peak
At 40°C cold-start
Inrush energy
typ. 0.4A
2
s 0.5A
2
s 1.7A
2
s At 40°C cold-start
Fig. 7-1 Input inrush current, typical behavior
Input Current
Input Voltage
Output Voltage
A: Start-up delay = Inrush delay
Input: 230Vac
Output: 24V, 3.3A
Ambient: 25°C
Upper curve: Input current 20A / DIV
Medium curve: Input voltage 500V / DIV
Lower curve: Output voltage 20V / DIV
Time scale: 40ms / DIV
8. HOLD-UP TIME
AC 100V AC 120V AC 230V
Hold-up Time typ. 38ms 60ms 244ms 1.65A, 24V, see
Fig. 8-1
typ. 19ms 29ms 120ms 3.3A, 24V, see Fig. 8-1
Fig. 8-1 Hold-up time vs. input voltage Fig. 8-2 Shut-down behavior, definitions
0
25
50
75
100
225ms
85 120 155 190 230Vac
Input Voltage
125
150
175
Hold-up
Time
200
24V, 3.3A, min.
24V, 3.3A, typ.
24V, 1.65A, min.
24V, 1.65A, typ.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Intput
Voltage
Note: At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is on during this time.