Rack
3.3 Rack UR5213 (6DD1682-0CH0)
SIMATIC TDC hardware
70 System Manual, 08/2017, A5E01114865-AL
Voltage monitoring
Input voltage
The input voltage is monitored for low level.
Undervoltage < approx. 90 V
•
signal and CPU STOP, shutdown of
output voltages <85V
Voltage dips ≤ 15 ms are buffered.
The power supply and therefore the system will be restarted on recovery from voltage dips to
approx. 5 % of the rated mains voltage and a duration longer than approx. 3 seconds.
The power on/off sequence (e.g. generation of a RESET or SYSFAIL signal) corresponds to
the reaction to manual operation of the mains switch.
The rack goes into standby state following voltage interruption of a duration shorter than
approx. 3 and dip to no less than approx. 5 % of the rated mains voltage. A usual power off
sequence precedes this state.
This state can only be cleared by cycling power off and on by means of the mains switch.
All output voltages are monitored (e.g. for overload/short-circuit).
Voltage monitoring functions at the power supply
outlet
+5 V in the range from 4.75 V to 5.35 V “POWER OK” LED is lit green;
+ 3.3 V in the range from +3.18 V... +3.5 V
+ 12 V in the range from +11 V to +13 V
- 12 V in the range from -11 V to -13 V
In all other cases, the “POWER OK” LED is lit red.
Select the "Object properties" in the "STOP" tab of
to configure the response of
the relevant module to a system failure alarm (bus signal *
=low):
● Modules can reset their digital and analog outputs
● CPU modules can go into the "STOP" state ("H" is displayed permanently)