Siemens LMV51 Series Basic Documentation page 241

Error Diagnostic Device
code code
A9 # VSD module Fault VSD Module
A9 01 VSD module Internal Fault VSD Module
A9 02 VSD module Internal Fault VSD Module
A9 04 VSD module Internal Fault VSD Module
A9 05 VSD module Internal Fault VSD Module
A9 07 VSD module Internal Fault VSD Module
A9 08 VSD module Internal Fault VSD Module
A9 09 VSD module Internal Fault VSD Module
A9 0A VSD module Internal Fault VSD Module
A9 0C VSD module Alarm from VSD
A9 0D VSD module Control Range Limitation VSD
A9 0E VSD module Internal Fault VSD Module
A9 15 VSD module Internal Fault VSD Module
Siemens Building Technologies Basic Documentation LMV5...
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system
Display
VSD module has detected own fault and
reported it to the basic unit.
Type of fault: See diagnostic code
CRC fault during ROM test
CRC fault during RAM test
Fault during key value check
Error code for time block overflow
Sync fault or CRC fault
Error code for main loop counter
Fault during stack test
Max IRQ speed reached
VSD reports a fault to the VSD module
VSD module could not offset speed differ-
Module ential within its control limits
Fault during the speed calculation test
CAN bus fault, disturbed CAN bus trans-
missions
Meaning for the LMV5x system Troubleshooting
*1)
*1)
*1)
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*1)
Possibly interference on the line to the speed sensor, check
cable routing, use shielding
*1)
Fault has been triggered by the VSD.
Read VSDs error code.
Check VSD settings (ramps, motor settings), increase ramp
time on VSD and basic unit, if necessary.
Check combination VSD / motor size
Check to see if the current interfaces of VSD and VSD
module use the same setting (0/4...20 mA).
Standardize the speed.
!! Note !!
After standardizing the speed -> check setting of combus-
tion mixture !
*1)
If fault occurs sporadically: Check CAN bus wiring.
Improve EMC.
Check terminating resistors and correct, if necessary
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CC1P7550en
13.08.2004