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9.7
Monitoring functions
9.7.1
Phase connection monitoring
The line voltage connection is monitored as to whether or not all phases are connected. If at
least one phase is missing, an error message is generated (see Fault reporting through
diagnostics data (Page 146)) and heating stops.
9.7.2
Rotating-field test
POM4320
The rotating field is tested for connecting the phase voltages of each POM. The POM
requires a clockwise phase sequence. Otherwise an error message is generated.
Heating operation is also possible with a counterclockwise phase sequence. However, it is
not possible to diagnose a defective heating element at a channel setpoint of 100%.
POM4320 Highend
There is a rotating field check for "Connection between phase and phase (closed delta)".
The POM requires a clockwise phase sequence. Otherwise an error message is generated.
In case of an incorrect rotating field, no output switch-on occurs.
See section "Connection between phase and phase (400/480 V) (Page 62)".
SIPLUS HCS4300 PROFINET/PROFIBUS DP
Operating Instructions, 10/2019, A5E35452705A/005
Functions
9.7 Monitoring functions
119
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