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Murphy iGUARD - Generator Parameters; Crank Termination AC

Murphy iGUARD
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Section 75 00-02-0522
04-06-11 - 18 -
26. Battery Low Warning - Low battery voltage setpoint. Voltage equal to or less than this
setpoint in normal (non-cranking) operation indicates battery needs charging. (Default 11.5 V)
27. Battery High Warning - Battery voltage equal to or greater than this indicates
overcharging of battery. (Default 14 V)
28. Fuel Low Warning - Fuel level warning setpoint. (Default is 35%)
29. Fuel Low Shutdown - System shuts down when fuel level reaches this amount. (Default
5%)
30. Energize to stop - In systems that require an energize-to-stop signal, this controls how
long the stop output is on. (Default is 0 sec)
31. RPM per Hertz - In systems with no magnetic pick up, engine RPM is a fixed constant,
based on the AC frequency, allowing an RPM display. (Default is 30)
Generator Parameters
1. Crank Termination AC - When using the AC frequency for a speed source, this is the
equivalent to crank termination RPM. (Default 20 Hz)
2. AC Speed Signal Delay - Delay to allow excitation of the alternator. (Default 3 sec.)
3. Power Good Timer - A timer to avoid nuisance start/stop cycles. At the end of a normal
automatic cycle, when the remote start signal is no longer active, this timer must expire before
the system will proceed to cooldown. (Default ø sec.)
4. CT Ratio - Current transformer ratio (xxx:5). (Default is 300:5) The iGUARD uses standard
5A output CTs.
5. Load Bypass Timer - Timer for bypass of load related alarms to allow load stabilization.
(Default 5 sec.)
6. Calibration Voltage - Allows field recalibration of AC voltage inputs. AC voltages here are
always measured Line to Neutral, even if the normal display is set for line to line.
7. Calibration Current - Allows field recalibration of AC current inputs.
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