Owner's manual

TROUBLESHOOTING GUIDE
The components of the positioner are under constant
surveillance by the installed micro controller. Errors detected
are displayed in LCD or indicated by the LEDs.
Certain conditions (such as “Stroke limitation active”) are
displayed in LCD or indicated by the LEDs as message.
Errors Detected During Initialization
After startup or reset, several initialization phases are passed
through which are shown in LCD or in the green LEDs. If this
phase stops an error was detected.
If after renewed reset
1)
the indicator stops at error code,
the device is probably defective and should be sent to the
manufacturer for repair. Stating the error code will help the
Repair and Service Dept.
1) Execute reset by simultaneous pressing () (–) (+) keys, or by turn-o and restart of
input signal
LED Error Codes (withLCD in true text)
LEDs
Description
red green
M1234
-1111Micro controller functional test
-111 - Micro controllerRAM test
-11-1Micro controller ROMtest
-11- -initialize operating system
-1-11 initialize monitor
-1-1-initialize interfaces
-1--1 initialize timer
-1---initialize EEPROM
--111initialize data
--11 - initialize ADC
--1-1initialize communication
--1- - initialize local operation
---11start background process
---1-checkoptions and start
----1start operating system
1=LED constant light
LED indication for diagnosis, errors:
The following combinations are possible:
After start /reset:(XXXX=error code)
M1
234
-XXXXError detectedduring Init s. 11.1
Device
in normal operation:
M1
234
1-
---Cyclicalself-test detects errorss.11.
2
--
---diagnosis without LED informs. 11.
3
¾x xxxflashing: messages.11.4
Errors Detected During Self-Test
During cyclical self-test, certain components of the SRD are
under constant surveillance. If necessary, trouble detection
is initiated in the electronics LCD or the red LED; output y1
becomes pressureless (‘fail safe position’).
If after reset
1)
the display shows the error again the device
is probably defective and should be sent to manufacturer
for repair.
LEDs
Description
redgreen
M1234
1----
Red LED lightsupconst.
RAM/EPROMfault
Actuate“Reset”; senddevice-
to manufactureriferror re-
appears
1=LEDconstantlight
1) Execute reset by simultaneous pressing () (–) (+) keys, or by turn-o and restart of
input signal
Page 60
Troubleshooting Guide
August 2014POS-UM-00009-EN-02