Monitoring Functions; Line Supply Voltage Monitoring; Rotating-Field Test; Monitoring Of The 24 V Dc Supply Voltage - Siemens SIPLUS HCS Operating Instructions Manual

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Functions

9.6 Monitoring functions

9.6

Monitoring functions

9.6.1

The Power Output Module (POM) can be operated in TN systems and TT systems. The

admissible line supply voltage is between 360 V and 520 V AC. The active line voltage is

measured and monitored for each POM and each phase. The actual voltage measurement is

reported to the user (see section Cyclic input data (Page 85)).

If the voltage lies outside the admissible range, an error message will be generated (see

section Process and system messages, error handling (Page 99)) and heater operation

stops. Heating can only be switched on again when the voltage has returned to the

admissible range.

NOTICE

Excessive voltages can damage the device

It is the responsibility of the user to ensure compliance with the maximum voltage limits.

9.6.2

The rotating field is tested for connecting the phase voltages of each POM. The POM

requires a clockwise rotating field. Otherwise an error message is generated.

Note

The heating system can also operate with a counter-clockwise rotating field. However, it is

not possible to diagnose a defective emitter at a channel setpoint of 100 %.

9.6.3

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 the failure of the HCS system or modules.

Operating Instructions, 11/2015, A5E35452705A/002

SIPLUS HCS4300

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