PAT DS150 - Page 52

Error Codes
45
Error Code
E91
E92
E93
E94
Error
No data trans-
mission form the
console to the
central unit
Error in the data
transmission from
console to central
unit
Error in the data
transmission from
the central unit to
the console
No data trans-
mission from the
central unit to the
console
Cause
 24 V supply of the console
is interrupted
 Interruption or accidental
ground in the line between
console electronics and
central unit
 Transmitter/receiver
module is defective
 Loose connection in the
line between console
electronics and central
unit
 Transmitter/receiver
module is defective
 Refer to E92
 Interruption or accidental
ground in the line central
unit - console
 5 V supply of the
computer in the central
unit is missing
 5 V supply is too low
 Transmitter/receiver
module is defective
 Computer module is
defective
 Electro-magnetic
interferences (e.g. when
switching contacts or
valves)
Elimination
 Check 24 V at terminal X1 of
the console electronics
 Check the main 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.
 Exchange console
electronics or LMI main
board
 Check the connection
between console electronics
and central unit
 Exchange console
electronics or LMI main
board
 Refer to E92
 Check line to the console (in
case of accidental ground,
replace console electronics,
too).
 Check connection to the
power unit
 Exchange the LMI main
board
 Replace console electronics
or LMI main board
 Replace processor board.
 Eliminate the source of
interference by inverse
diodes or varistors.
Note: If an error message is displayed which is not contained in above list, please contact PAT