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Electrical functions
3.
Electrical functions
3.1
Input requirements
The AC input voltage and the DC input voltage must be in
the defined voltage ranges (see data sheet). Otherwise, the
power supply may not work properly or even fail. The maxi-
mum investigated branch circuit rating is 20 A. Therefore, a
20 A breaker should be used for medical applications.
3.2
Output requirements
Main DC Output
Output current and power of the end product must not
exceed the rated/specified values at any value of output
voltage. The output current must not exceed the maximum
output current.
Auxiliary DC Output
The Auxiliary DC Output supports a maximum current of
2 A.
3.3
Start-up timing
Input
Remote
ON/OFF
90%
10%
DC Output
max. 2.5 s
Fig. 8: Start-up timing YYPLI-Model
Input
Remote
ON/OFF
90%
10%
DC Output
max. 2.5 s
Fig. 9: Start-up timing YYPLY-Model
6
max. 100 ms
max. 150 ms
max. 100 ms
max. 150 ms
3.4
No-load operation
A no-load condition causes no damage, hazardous condi-
tion or reduction in performance.
3.5
Fan Speed Control
The maximum fan speed is limited to make sure the acous-
tical noise is less than 39 dB(A) at the condition of 100 VAC,
100 % load and 30 °C ambient temperature. Fan speed
varies linearly with the temperature.
To keep the noise low the fan will be turned in standby
mode.
3.6
Output over voltage protection (OVP)
Main DC Output
The Output Over Voltage Protection (OVP) function shuts
down Main DC Output when the output voltage reaches the
protected voltage.
The settings for the OVP function cannot be changed.
Resetting the OVP function for the Main DC Output
Disconnect the power supply from the supply voltage for a
few seconds, then re-connect.
or
Set the Remote ON/OFF function from OFF to ON.
Auxiliary DC Output
The Auxiliary DC Output is shut off when the output volt-
age exceeds 6 Vdc (typical). To reset OVP, turn the input
voltage off and on.
IMA-x1000-xx-Series_Application_Note_V4.0_XX_EN_2019-08-19
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