Winco DSE7300 Series - Manual (Page 104)

DSE Model 7000 Series Control and Instrumentation System Operators Manual
104 Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 5 15/10/2009 ADM
SYMPTOM POSSIBLE REMEDY
Incorrect reading on Engine
gauges
Fail to stop alarm when engine is
at rest Check engine is operating correctly. Check sensor and wiring paying particular
attention to the wiring to terminal 47 (refer to appendix). Check that sensor is
compatible with the 7000 series module and that the module configuration is
suited to the sensor.
Module appears to ‘revert’ to an
earlier configuration When editing a configuration using the PC software it is vital that the
configuration is first ‘read’ from the controller before editing it. This edited
configuration must then be “written” back to the controller for the changes to
take effect.
When editing a configuration using the fascia editor, be sure to press the
Accept button to save the change before moving to another item or exiting
the fascia editor
Set will not take load Ensure the generator available LED is lit
Check that the output configuration is correct to drive the load switch device
and that all connections are correct.
Remember that the set will not take load in manual mode unless a remote start
on load input is present or the close generator button is pressed.
Inaccurate generator
measurements on controller
display Check that the CT primary, CT secondary and VT ratio settings are correct for
the application.
Check that the CTs are wired correctly with regards to the direction of current
flow (p1,p2 and s1,s2) and additionally ensure that CTs are connected to the
correct phase (errors will occur if CT1 is connected to phase 2).
Remember to consider the power factor. Ie (kW = kVA x powerfactor)
The 7000 series controller is true RMS measuring so gives more accurate
display when compared with an ‘averaging’ meter such as an analogue panel
meter or some lower specified digital multimeters.
Accuracy of the controller is better than 1% of full scale. Ie Gen volts full scale
is 333V ph-n so accuracy is ±3.33V (1% of 333V).
NOTE:- The above fault finding is provided as a guide check-list only. As the module can be
configured to provide a wide range of different features, always refer to the source of your module
configuration if in doubt.