10.5.8 Overspeed
These two alarms are for overspeed protection.
The alarm response is based on the shaft generator speed, as measured by the
MPU/W/NPN/PNP input.
Configure these parameters under Configure > Parameters > Engine > Protections > Overspeed #, where # is 1 or 2.
Table 10.21
Default parameters
Parameter Range Overspeed 1 Overspeed 2
Set point 10 to 150 % of nominal speed 110 % 120 %
Delay 0 s to 3 min 5 s 1 s
Enable Not enabled, Enabled Not enabled Not enabled
Latch Not enabled, Enabled Nort enabled Enabled
Action Warning Trip generator breaker
INFO
In addition to these overspeed alarms, one of the controller's digital inputs can be connected to hardware that detects
overspeed. A customised alarm for overspeed can then be configured on that digital input.
10.5.9 Other SHAFT generator controller alarms
The following alarms are also included on the SHAFT generator controllers:
• Under-speed
• Primary running feedback failure
• Voltage or frequency not OK
• Magnetic pickup wire break*
• Total running hours notification
• Trip running hours notification
More information
For the alarm marked with *, see Hardware characteristics and configuration for more information.
For the other alarms, see GENSET controller, GENSET controller alarms for more information.
DESIGNER'S HANDBOOK 4189340911K UK Page 376 of 521
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