SDCS-POW-4 Product datasheet
Model number: |
SDCS-POW-4 |
|
Module Type: |
Power Supply |
Manufacture: |
ABB |
|
Condition: |
Brand New |
Range of Product: |
ABB |
|
Lead time: |
In Stock |
Weight: |
0.35 kg |
|
HS CODE: |
8537101190 |
Dimension: |
23x11x3.4cm |
|
MOQ: |
1 |
Product Origin: |
SWEDEN |
|
System: |
DCS |
Discontinued on: |
Active |
|
Communication Service: |
Ethernet router |
SDCS-POW-4 Functional Description
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Monitoring the DCS 500 power section
The size-A5 power section is likewise monitored by an electrically isolated PTC thermistor detector, which is installed on the non-isolated heat sink in an isolated configuration. Evaluation of the resistance and the protection effect correspond to those mentioned for point (a.) above.
The size A6 and A7 power section is not directly monitored by an electrically isolated PTC thermistor detector. For this size, the same thermistor detector is used as for (a.) and (b.) above, but it is here not mounted on a heat sink but close to the fan air outlet. The detector thus measures the power section’s radiated heat and any changes in the cooling air temperature and volume. Since the cooling air volume can only be detected indirectly, a differential-pressure switch has been additionally fitted at the unit’s housing, always located close to the power terminals.
The resistance change proportional to the temperature is acquired and evaluated in the unit’s software. If the temperature rises above the parameterized value, then first an alarm will be outputted, and - if the temperature continues to rise - an error message. The value to be set for this parameter must not be more than 10 degrees above the permissible ambient temperature. The differential-pressure switch compares the pressure inside the unit with the normal atmospheric pressure. If the fan has been switched on and the unit door closed (and no unit casings have been removed), the pressure switch will signal “Cooling conditions ok”, which means the drive may be enabled. There is no need to set any specific differential pressure (recommendation: centre setting).