Siemens LMV5 Quick Start Manual page 161

Error Diag.
Device Display
code code
Fault with Sensors Connected to Internal Load Controller, in Base Unit (LMV5)
Open-circuit
54
PT1000 Sensor
Short-circuit
55
Ni1000 Sensor
Open-circuit
56
Ni1000 Sensor
LMV5
Overvoltage at
57
Load
Input 2
A6
Cont. Open-circuit /
58 Mod.
Short-circuit
at Input 2
Overvoltage at
59
Input 3
Open-circuit /
5A
Short-circuit
at Input 3
60
61
62
63
64
65
66
LMV5
67 Load Internal Fault
A6
Cont. Load Controller
68
Mod.
69
6A
6B
6C
6D
6E
6F
LMV5 QSG Rev 4
Meaning for the LMV5x system
Open-circuit sensor PT1000 Terminals X60.3, X60.4
Short-circuit sensor Ni1000 Terminals X60.3, X60.4
Open-circuit sensor Ni1000 Terminals X60.3, X60.4
Overvoltage at input 2 Terminals X61
Open-circuit / short-circuit input 2 Terminals X61
Boiler sensor (7MF) could be seeing a vacuum
Overvoltage at input 3 Terminals X62
Open-circuit / short-circuit input 3 Terminals X62
Fault with Base Unit (LMV5) Internal Load Controler
Timeout during calibrate_ADC
Timeout during read_conversion
Timeout during calibrate_ADC
Fault during RedInv reading from A/D converter
Fault internal A/D converter
Gain register has been changed
Offset register has been changed
Too great / small gain for self-calibration of A/D converter
Too great / small offset for self-calibration of A/D converter
Fault internal A/D converter
Fault during PWM test
Faulty reference voltage
Fault transmitter power supply
Fault analog output, voltage deviation too great
Fault during resistance test PT100 input (X60)
Fault during diode test PT100 input
Sec 5 Pg 35
Corrective action
Check temperature sensors wired to X60, and pressure
sensors wired to X61.Check wiring and sensor. Re-wire
or replace sensors if necessary.
If fault occurs sporadically improve EMC. If fault occurs
continously, replace LMV5
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