YOKOGAWA SA11, Инструкция по эксплуатации, Страница: 43 / 56

IM 12A06S01-00EN-P
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10 TROUBLESHOOTING
The SA11 contains error diagnostics as explained in Section 4.3.
Flagging of errors, measurement warnings and statuses is done by the SA11 and it depends
on the HOST system if flagging and detailed information is indicated. If so, refer to the HOST
belonging User’s Manual for details. In case of (critical) device errors, at first please check
the following items:
10.1 Installation of SA11
• In case of pH, check if the correct SA11 adapter is used with the installed analogue
sensor. If not, replace the SA11 adapter by a correct one.
• Check if a Yokogawa sensor with an internal ID-chip is used. If not, replace sensor by the
correct type.
• Check if the analogue input of the SA11 is connected in a proper way. The Variopin
connectors have to correctly positioned and firmly screwed, and no moisture must be
encapsulated which can reduce the isolation in between the individual contacts. When
using the extension cable, check if the correct type is used (see Section 2.2.2)
• Check if wiring to the HOST system is done correctly. The M9 connector has to be
screwed firmly and the correct type of interconnection cable must be used (see Section
3.3).
• Check the grounding of the system (see Section 2.3.4).
• Be sure that a sensor is connected to the SA11 before powering the system. If not, the
SA11 configuration can be wrong resulting in device errors. By connecting the sensor
these error will disappear.
10.2 Setting of the SA11
• Check if the measurement setup is done in a proper way (see Section 3 or Section 6)
• Check if the commisioning is done in a proper way (see Section 4 or Section 7)
If not correct, please setup the SA11 in a correct way. In worse case scenario, please
execute factory defaults.
10.3 Sensor
• Check if a Yokogawa sensor with an internal ID-chip is used. If not, replace sensor by the
correct type.
• Check if the sensor used and is calibrated in a correct way. If not, re-calibrate the sensor.
• In case of a temperature error please check if temperature element is broken. If so replace
the sensor or set temperature to manual to resume measurements
10.4 Application
• Check if the SA11 and auxiliary equipment are specified for the environmental conditions.
If not, YOKOGAWA cannot guarantee proper working of the SA11
• Check if the SA11 and sensor are specified for the process conditions. If not, YOKOGAWA
cannot guarantee proper working of the SA11 and sensor
If the (critical) error persists, even when all items are checked and found correct, please
replace the SA11 device.
NOTE The SA11 device is a non-repairable unit.