User Manual - PolyXeta
®
2 Detector with HL Sensor
for Refrigerant Gases - May_2020
Page
16
PolyXeta
is a registered trademark of MSR
Made in Germany
GAPX2_Freon_E_2020_05_18
Phone: +49 8531 9004-0 Fax: +49 8531 9004-54
Specification subject to change without notice
MSR-Electronic GmbH, Buergermeister-Schoenbauer-Str. 13, D 94060 Pocking
www.msr-electronic.de
6.4
Faults
The PX2 detector includes a diagnostic module for the continuous monitoring of the relevant functions and
parameters as well as a processor-independent watchdog. These features set the PX2 device into the safe
mode "Fault" in case of an internal or external error. The following table 6.1 shows all possible errors,
possible causes, the related troubleshooting and the resulting device status.
When the cause of the error has been eliminated, the PX2 gas detector restarts with the diagnostic mode on
its own. It is not necessary to acknowledge the error message.
If an error occurs, it is output in the option with display instead of the measured value and in the menu error
status in plain text. If there is more than one error, it is output with a cumulative, bit-coded error code.
Error type
Cause
Remedy
Fault
Relay
Analog
Output
Centr.
Bus
Display
Error Code Text Mess.
Sensor Head (SX1)
DP1-
Sensor element defective
Internal
Replace SX1
sensor head
Error
< 2 mA
Error code
is sent
0x8 001 h Sensor
Temperature < -25 °C > +60 °C
0x8 002 h Overtemp.
Measured value processing
0x8 002 h ADC error
System voltages <>
0x8 004 h Voltage
Operating volt.< 18.5 V> 36.5 V
0x8 004 h Voltage
RAM / ROM / µC error
0x8 008 h CPU error
EEPROM error
0x8 010 h EE error
Meas. value < -6 % of range
Sensor drift,
calibration not
correct
Perform
calibration
0x8 100 h Underrange
Meas. value > 106 % of range
> 21.2 mA
0x8 200 h Overrange
Gas concentration
> meas. range
See 6.2
Maintenance due
Maintenance date
reached
Perform
maintenance
No effect
Mainten.
message
0x8 080 h* Maintenance
I / O Unit (PX2)
EP1-
Temperature < -25 °C > +60 °C
Ambient temp.
Temp.!
Error
< 2 mA
Error code
is sent
0x8 040 h Overtemp.
Internal
Replace PX2
device
Measured value processing
0x8 002 h ADC error
RAM / ROM / µC error
0x8 008 h CPU error
EEPROM error
0x8 010 h EE error
No response alarm relay
0x8 020 h I/O error
Configuration error
Meas. range SX1 ≠
I/O unit
Adjust meas.
range
0x8 010 h EE error
Deviation of analog output signal
< 5 % >
Short-circuit
or
Interruption at the
analog output
Check wiring /
load
Error
X mA
0x8 020 h I/O error
Internal
Replace PX2
device
Communication error to sensor
head
Sensor head not
fitted correctly /
wrong gas type
Check it , set
correct gas
type
Error
< 2 mA
0x9 000 h
Communic.
error
Internal
Replace SX1
sensor head
Hardware Watch Dog triggered
Internal, < system
voltage, µC defect.
Replace PX2
device
Error
< 1 mA
Comm.
STOP
Reset
Reset
Operating voltage limits exceeded
too high / too low
External
Check voltage
Error
< 2 mA
Comm.
STOP
0x8 008 h
Voltage
Internal
Replace PX2
device
Maintenance due
Maintenance date
reached
Perform
maintenance
No effect
0x8 080 h* Maintenance
Special Mode
See chapter
“Special Mode”
Cancel cause
of Special
Mode
Error
<
2 mA**
Comm.
STOP
0x8 000 h
Table 6.1: Error messages
* Is only faded in if an error code is pending.
** No influence on the analog signal if the Special Mode was triggered by the operator.