5.1 Program Functions
If the battery voltage drops below the defined Battery Voltage Lower Limit (P04), an alarm occurs
and “Low Battery Failure” LED illuminates.
P02 Speed Lower Limit
P03 Speed Upper Limit
P28 Speed Fault Control Delay
A fault will be reported if the alternator output frequency goes outside the window defined by the
upper and lower limits for more than the time defined as the Alternator speed fault control delay
(P28). The fault will only occur if the engine has started to run and has been running for the period
defined as the Control on Delay (P26). This failure immediately stops the generating set without
Engine Cooling Time (P29)
P00 Alternator Voltage Lower Limit
P01 Alternator Voltage Upper Limit
P27 Alternator Voltage Fault Control Delay
A fault will be reported if the alternator output voltage goes outside the window defined by the
upper and lower limits for more than the time defined as the Alternator Voltage Fault Control
Delay (P27). The fault will only occur if the engine has started to run and has been running for the
period defined as the Control on Delay (P26). This failure immediately stops the generating set
without Engine Cooling Time (P29)
5.1.1 Alternator Voltage
5.1.2 Alternator Frequency
5.1.3 Battery Voltage Lower Limit (P04)
P06 Periodic Maintenance Hour Set Value
P07 Periodic Maintenance Hour Reset
To ensure reliability, the engine must be serviced at regular intervals. The unit can be set to
indicate when a service is due. Set Periodic Maintenance Hour Set Value (P06) to the number of
running hours between services. Use Periodic Maintenace Hour Reset (P07) to reset the hours
counter at each service. When the engine has run for the defined number of hours, the alarm LED
will flash and when the alarm display option is selected, the display will show the error message
bAEr.
5.1.4 Maintenance Indication
This parameter specifies the method to read generator frequency. The choice is between
alternator frequency and external magnetic pick-up. Frequency and speed is monitored so as to
detect when engine has started and if there is a generator frequency failure. See Sections 5.1.2
Alternator Frequency, 5.1.8 Engine started signals (P18) and 5.1.10 Engine Starting.Speed Limit
for Crank Disconnection (P22) should be set to the frequency that must be achieved at start-up.
When magnetic pick-up is using Tooth Number (P13) must be entered correctly. Nominal
Alternator Frequency (P11) and Nominal Speed (P12) are used to compute alternator RPM or
frequency. If Speed Sensing Input Selection (P15) ise set to 0 (from Alternator Voltage), the unit
uses Nomainal Alternator Frequency (P11) and Nominal Speed (P12) to calculate RPM from the
measured frequency of the alternator voltage. If Speed Sensing Input Selection (P15) is 1 (from
Magnetic Pick-up), the unit uses Nominal Alternator Frequency (P11) and Nominal Speed (P12)
to calculate alternator output frequency from the measured RPM.
5.1.5 Speed Sensing Input Selection (P15)
24