Siemens LMV5 Quick Start Manual page 162

Error Diag.
Device Display
code code
Fault with Sensors Connected to Internal Load Controller, in Base Unit (LMV5)
70
71
72
73
74
75
76
77
External Fault
78
Load Controller
79
LMV5
7A
Load
A6
Cont.
7B
Mod.
7C
7D
7E
7F
80
81
82
90
Internal Fault
91
Load Controller
92
93
96
97
LMV5 QSG Rev 4
Meaning for the LMV5x system
Measured value varies too much: PT100 sensor (Terminals
X60)
Measured value varies too much: PT100 line (Terminals X60)
Measured value varies too much: PT1000 (Terminals X60)
Measured value varies too much: PWM
Measured value varies too much: Voltage measurement input 2
(Terminals X61)
Measured value varies too much: Voltage measurement input 2
(Terminals X61)
Measured value varies too much: Voltage measurement input 3
(Terminals X62)
Measured value varies too much: Current measurement input 3
(Terminals X62)
Excessive voltage value or wrong polarity PT100 sensor
(Terminals X60)
Excessive voltage value or wrong polarity PT100 line (Terminals
X60)
Excessive voltage value or wrong polarity PT1000 (Terminals
X60)
Excessive voltage value or wrong polarity PWM
Excessive voltage value or wrong polarity voltage measurement
input 2 (Terminals X61)
Excessive voltage value or wrong polarity current measurement
input 2 (Terminals X61)
Excessive voltage value or wrong polarity voltage measurement
input 3 (Terminals X62)
Excessive voltage value or wrong polarity current measurement
input 3 (Terminals X62)
Fault during internal muliplexer test PT100 sensor
Fault during internal multiplexer test PT100 line
Fault during internal multiplexer test PT100
Number of maximum sync failures exceeded
Wrong CRC during SYNC message
Wrong CRC during PDO message
Main loop counter does not agree with basic unit
Fault during multiplexer test
Paraccess with FINISH unsuccessful
Sec 5 Pg 36
Corrective action
1) Check wiring and sensor. Re-wire or replace sensors
if necessary.
2) Use shielded cable on sensor wiring.
3) Make sure that sensor wiring is not run next to high
voltage AC wiring.
4) If the diagnostic code indicates excsssive voltage,
check input with meter. Trace voltage source.
If fault occurs sporadically improve EMC. If fault occurs
continously, replace LMV5
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