Operator control at the device
3.16 Monitoring functions
Power supply system SITOP PSU8600
108 Manual, 09.2018, A5E36758446-5-76
Monitoring functions
3.16.1
Overtemperature monitoring functions
In the SITOP PSU8600 basic unit, in the SITOP CNX8600 expansion modules and in the
UPS8600, overtemperature monitoring functions are integrated, which shut down the
relevant components when the temperature inside the component reaches an inadmissibly
high level.
Necessary steps after a shutdown as a result of an inadmissibly high internal temperature:
1. Check the mounting clearances of the devices, see Chapter "Standard mounting position
(Page 143)" and "Other mounting positions (Page 145)".
Excessively low mounting clearances cause overheating.
2. Measure whether the ambient temperature is permissible, see Chapter "Ambient
conditions (Page 411)".
Identifying a shutdown due to an inadmissibly high temperature
Basic unit
If an inadmissibly high temperature is detected inside the basic unit, the output of the basic
unit and the expansion modules being used are shut down.
A shutdown as a result of an inadmissibly high temperature inside the basic units is signaled
by:
● Red LED "O.K."
① at the basic unit and at the supplementary modules
● LEDs "ON/OFF/RST"
② go dark
● Signaling contact at the basic unit
If an inadmissibly high temperature is detected inside the UPS module, then the UPS
module is shut down.
A shutdown as a result of an inadmissibly high temperature inside the UPS module is
signaled by:
● Red LED "O.K."
① at the UPS module
● Signaling contact at the basic unit
If an inadmissibly high temperature is detected at an output, then the outputs at the
expansion modules are shut down in pairs (1 and 2 or 3 and 4). The remaining outputs
remain switched on.
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