Monitoring Of The 24 V Dc Supply Voltage - Siemens SIPLUS HCS Series Operating Instructions Manual

Functions
9.7 Monitoring functions
Line voltage monitoring POM4220 Lowend, POM4220 Midrange phase angle control and
POM4220 Flexible
The monitoring function is only available for these modules if a PM U/I is plugged in.
Permitted line voltage range:
● POM4220 Lowend: 207 V to 253 V AC
● POM4220 Midrange phase angle control: 207 V AC to 300 V AC
● POM4220 Flexible:
Monitoring for the smallest and greatest value of the POM used
(max. 45 V - 10 % to 300 V)
Line supply voltage monitoring POM4220 Highend
The measured values of the POM are used for monitoring. The permitted voltage range is:
●
– Connection between phase and neutral conductor
– 2-pin connection between phase and neutral conductor
● 360 to 520 V AC for:
– Connection between phase and phase
– 2-pin connection between phase and phase
– Economy circuit
Line supply voltage monitoring POM4320
The measured values of the POM are used for monitoring.
The permitted line voltage range is 360 V AC to 520 V AC.
9.7.4

Monitoring of the 24 V DC supply voltage

The 24 V DC supply voltage is monitored on the CIM. If the 24 V fails, the power outputs of
the POMs are automatically deactivated. There is no manufacturer-specific diagnostics
alarm in the case of failure of the 24 V supply. Instead, the PROFINET/PROFIBUS controller
detects and signals failure of the HCS system or individual modules.
148
207 to 300 V AC for:
SIPLUS HCS4200 PROFINET/PROFIBUS DP
Operating Instructions, 07/2019, A5E35066204A/006