Rack
3.3 Rack UR5213 (6DD1682-0CH0)
SIMATIC TDC hardware
72 System Manual, 08/2017, A5E01114865-AL
The PS5213 power supply is equipped with three fans.
Since the rack is not equipped with an air filter, you should provide a filter on the cabinet if
necessary.
The fans are monitored (speed). Activation of the monitoring function is delayed in order to
enable the reliable startup of the rack after you switched on power.
On failure of one or two fans, the power supply is shut down in order to prevent thermal
destruction of the modules. Use the "Shutdown Mode" dip switch to select the mode (the
switch has the “ONE” or “TWO” settings). With switch position “ONE”, a power supply
shutdown is triggered on failure of at least one fan and in switch position “TWO” by the
failure of at least two fans.
Always set the “Shutdown mode” dip switch S1.4 to “ONE” for modules requiring forced
convection (e.g. CPU550) at air intake temperatures from 0 C to 55 °C.
You may only set switch position "TWO" if it can be assured that the air intake temperature
at the rack does not exceed 35 °C. The power supply is not shut down on failure of a single
fan, but the corresponding backplane bus signal (FANAL*) is activated and can be detected
by the configuration software.
At an ambient temperature of 55 °C, it is recommended to replace the fans at intervals of
approx.
. The power supply must be removed for fan replacement.
Users cannot replace the fans.
Three 230V signaling relays with floating potential facilitate external evaluation of the rack's
system states.
Table 3- 5 Signaling relay
Contact in switched off state
Contact in error-free op-
eration
LED in error-free operation
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