AEG Electrolux Service 7000 Operations Instructions download pdf (Page 12)

Switch Mode Power Supply AC 7000

Page 12 of 24 0208 BAL, en

5.3 Monitoring

5.3.1 Mains Monitoring

The mains monitoring assembly fulfils various functions. It ensures

the intrinsic safety of the unit against overloads and overvoltages with

fixed switching point settings.

The response values (switching points) are given in the technical data

(refer to Chapter 11).

Off

Und e rvo lt a g e

Overvoltage

Hysteresis

(Shutdown hysteresis range)

mains

[V]

Figure 3:

Phase failure monitoring

- The mains monitoring device detects phase failure and

switches the unit off. When the phase is registered the unit

automatically resumes operation with a "soft start".

Mains undervoltage monitoring

- The unit is switch off if the mains supply drops below the

switching point. When the hysteresis voltage is exceeded the

unit automatically resumes operation with a "soft start".

Mains overvoltage monitoring

- When the maximum permissible mains voltage is exceeded

the SMPS is stopped for the duration of the overvoltage.

When the voltage level drops below the hysteresis voltage the

unit automatically resumes operation with a "soft start".

5.3.2 Output Monitoring

The setting potentiometers and the LED indicators for the following

monitored functions are located on the front plate:

Overtemperature monitoring ϑ

with deactivation and latching.

DC-overvoltage indicator U

with deactivation and latching

(response delay t = 10 ms)

Adjustment with U

> potentiometer

DC-undervoltage indicator U

without delay, without latching

(response delay t = 2,8 s)

Adjustment with U

< potentiometer

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AEG Electrolux Service 7000 Operations Instructions Page 12

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