Data Sheet

CPS20.241-60
C-Series
24V, 400W, DC/DC CONVERTER
7. HOLD-UP TIME
The internal capacitor, which supplies the energy for the hold-up time is isolated by a diode to the input voltage. A
short on the input line does not discharge the internal hold-up capacitor.
Hold-up Time typ. 80ms at 8.2A, see Fig. 7-1
min. 64ms at 8.2A, see Fig. 7-1
typ. 35ms at 16.3A, see Fig. 7-1
min. 28ms at 16.3A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions
0
20
40
60
100ms
70 90 110 130 150Vdc
Input Voltage
80
Hold-up Time
at 16.3A, typ.
at 8.2A, min.
at 8.2A, typ.
at 16.3A, min.
- 5%
Hold-up Time
Output
Voltage
Input
Voltage
8. DC-OK RELAY CONTACT
This feature monitors the output voltage, which is produced by the DC/DC converter itself. It is independent of a back-
fed voltage from a unit connected in parallel to the DC/DC converter output.
Contact closes As soon as the output voltage reaches 22V.
Contact opens As soon as the output voltage falls below 22V.
Short dips will be extended to a signal length of 100ms. Dips shorter than 1ms will be ignored.
Contact ratings max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load
min. 1mA at 5Vdc min. permissible load
Isolation voltage See dielectric strength table in section 18.
Fig. 8-1 DC-ok relay contact behavior
100ms
22V
<
1ms
open openclosed closed
>
1ms
Aug. 2016 / Rev. 1.0 DS-CPS20.241-60-EN
All parameters are specified at 24.5V, 16.3A, 110Vdc, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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