Controller functions
RES-445
Page 49
activated in one of these states, the voltage value does
not change any more.
Selective fault detection and indication can thus be
implemented simply and inexpensively using the
analog input of a PLC with a corresponding error
message (
!
Kap. 10.21 „Error messages“ auf
An alarm can be reset by pressing the
"RESET" key, by activating the "RESET"
signal at terminals 20+26 (
!
signal“ auf Seite 38) or by switching the controller
off and then on again.
10.21
Error messages
The table below shows how the analog voltage values
that appear at the actual value output are assigned to
the faults that have occurred. It also describes each
fault and the required corrective action.
The block diagram in Kap. 10.22 „Fault areas and
causes“ auf Seite 51 permits each fault to be cleared
quickly and efficiently.
!
