FW Murphy Selectronic S1501 series, Installation And Operation Manual

Page: 23 / 34

Section 50 00-02-0271
2018-10-23 - 19 -
In Electric Motor applications (Pulses/rev = 0), this is the timer to gain the Motor Starter
Auxiliary Run signal, after energizing the motor relay. If this signal is not seen before this timer
expires, a “Motor Starter Failure” shutdown will occur.
In Engine applications (Pulses/rev > 0), this is the timer to gain RPM reading > 10 before the
Ignition and Fuel relays are energized. If this signal is not seen before this timer expires, an
“Engine Failure To Crank” shutdown will occur. If set to 0, this RPM permissive is ignored.
Class-B1 x:xx
This timer locks out sensor inputs configured as Class B1 on startup.
Class-B2 x:xx
This timer locks out sensor inputs configured as Class B2 on startup.
Load x:xx
This timer delays energizing of the Load relay after starting, and is typically used as a warmup
time.
Process x:xx
This timer locks out sensor inputs configured as class P after energizing the Load relay. This
is typically used for Process alarms and shutdowns which do not clear until the unit has
loaded.
Idle x:xx
This timer determines the length of time the system will run after de-energizing the Load relay
after a stop signal is received. This is typically used for a Cooldown time period for the
equipment.
Ign. Gnd. x:xx
In Engine applications (Pulses/rev > 0), this is the delay between de-energizing the fuel valve
relay and de-energizing the ignition relay. This allows remaining fuel in the line to be burned
off, prior to disabling the ignition system.
Postlube x:xx
After a stop or shutdown fault (non-ESD) this is the time for which the Lube relay will be
energized for a postlube cycle.
Cooler Dly x:xx
In Electric Motor applications ((Pulses/rev = 0), this timer delays energizing the cooler relay
after energizing the motor relay to reduce inrush current imposed on the power source for the
AC motors.