Hirschmann PAT IFLEX5 - Error Codes E91-E94

Error Codes
© Hirschmann Rev. I 05/22/17 190154_I.DOC
69
Error Code
Error
Cause
Elimination
E91
No data trans-
mission form the
console to the
central unit
 24 V supply of the
console is interrupted
 Check 24 V at terminal
X1 of the console
electronics
 Interruption or accidental
ground in the line
between console
electronics and central
unit
 Check the connection
console electronics -
central unit. In case of an
accidental ground, the
transmitter module of the
console electronics might
be damaged. Therefore,
replaces the console
electronics.
 Transmitter/receiver
module is defective
 Exchange console
electronics or LMI main
board resp.
E92
Error in the data
transmission from
console to central
unit
 Loose connection in the
line between console
electronics and central
unit
 Transmitter/receiver
module is defective
 Check the connection
between console
electronics and central
unit
 Exchange console
electronics or LMI main
board resp.
E93
Error in the data
transmission from
the central unit to
the console
 refer to E92
 refer to E92
E94
No data trans-
mission from the
central unit to the
console
 Interruption or accidental
ground in the line central
unit – console
 Check line to the console
(in case of accidental
ground, replace console
electronics, too).
 5 V supply of the
computer in the central
unit is missing
 Check connection to the
power unit
 5 V supply is too low
 Exchange the LMI main
board
 Transmitter/receiver
module is defective
 Replace console
electronics or LMI main
board
 Computer module is
defective
 Replace processor board.
 Electro-magnetic
interferences (e.g. when
switching contactors or
valves)
 Eliminate the source of
interferences by inverse
diodes or varistors.