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Commissioning and Fault Finding

Part No. 057-120 8660 OPERATING MANUAL ISSUE 1 07/05/2010 ADM

9 FAULT FINDING

SYMPTOM POSSIBLE REMEDY

Unit is inoperative

Read/Write configuration does not

operate

Check the battery and wiring to the unit. Check the DC supply. Check the DC

fuse.

Unit shuts down Check DC supply voltage is not above 35 Volts or below 9 Volts

Check the operating temperature is not above 70°C. Check the DC fuse.

Continuous starting of generator

when in AUTO

Check that there is no signal present on the “Remote Start” input. Check

configured polarity is correct.

Check the mains supply is available and within configured limits.

Generators fail to start on receipt

of Remote Start signal.

Check Start Delay timer has timed out.

Check signal is on “Remote Start” input. Confirm correct configuration of input

is configured to be used as “Remote Start”.

Check MSC link operation

Check 8660 ATS and 8610 engine controllers are in AUTO mode.

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

Bus 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 the mains

supply fails, a remote start on load input is present or the close generator

button is pressed.

Inaccurate 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 8600 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.

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Brainboxes PX-246 Spécifications Page 69

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