Instruction manual for devices of the MASI20 series
V 1.0
29
6 Overload / short-circuit response
6.1 Sensor / transmitter supply
A short-circuit or an overload on the sensor supply corresponds to a peripheral error (FID) of the slave ;
error indicated by the master if it is in conformity with the specification AS-i 2.1.
§
The slave indicates such errors by flashing display of the red LED „F
AULT
“. The slave still works
normally.
§
The error causes a current limitation and a voltage drop : sensors are no more supplied.
§
The master indicates the peripheral error by flashing display of the „
CONFIG ERR
“ LED.
When the cause of the error has been corrected.
§
The slave is reset (the red LED „F
AULT
“ is off)
§
The sensor supply is restored.
§
The error is no more indicated by the master.
6.2 Auxiliary supply
Absence of voltage or a voltage below 9V of the auxiliary supply corresponds to a peripheral error (FID)
of the slave ; error indicated by the master if it is in conformity with the specification AS-i 2.1.
§
The slave indicates such errors by flashing display of the red LED „F
AULT
“. The slave still works
normally.
§
The outputs or the sensor supply are no more supplied (or with low voltage >9V).
§
The master indicates the peripheral error by flashing display of the „
CONFIG ERR
“ LED.
When the cause of the error has been corrected.
§
The slave is reset (the red LED „F
AULT
“ is off ).
§
The output or sensor supply is restored.
§
The error is no more indicated by the master.
In case of a short-circuit on the output of a slave far away from the system power
supply, some slaves may sporadically indicate an undervoltage of the auxiliary power
supply, due to a voltage drop caused by the high current in the cable.
