Operation - Stream Configuration
Part No.: 4418309_Rev09
Fusion4 MSC-L
Honeywell
Installation & Operation Manual
5 - 177
5.14.2.2.1.1 Pump Feedback
If the
[Pump feedback]
I/O binding is defined, then the controller should
generate an error if the pump indication input is inactive after the
pump demand is active.
The allowable delay is defined by the
[Pump feedback timeout]
entity
(defined in the alarm settings submenu for this alarm).
5.14.2.2.1.2 Tank Low Level Switch
Supply-tank level monitoring is useful in applications where a very small
supply tank is used. This is typical in portable or mobile applications
such as truck-mounted systems.
By monitoring a hardware input connected to a level switch in the
supply tank, the controller can detect when the level in the tank is
nearing empty, and take appropriate action. This prevents the pump
from running completely dry, and prevents fueling operations from being
interrupted mid-load.
The tank-level signals used should provide a simple form contact
closure upon the detection of a low level (in excess of some low point)
in the supply tank. Consideration should be given to the pump intake
position in the tank and to the amount of blend volume required for a
normal fuel delivery.
The switch-activation level should be positioned so that it is slightly
higher than the level required for the normal delivery. If the tank low-
level switch indicates “low” immediately upon the start of the delivery,
there is still an adequate volume in the tank to allow the delivery to
complete prior to the pump inlet drawing air.
If the
low-level condition
exists, the MSC-L
can operate
under normal
condition. To clear the tank low-level signal, the tank must be refilled to
a point that closes the level switch. At that time, the alarm disappears.
There is no need to reset the condition as with normal alarms.
5.14.2.2.1.3 Tank Empty Switch
If the
tank-empty condition
exists, the MSC-L
cannot operat
e under
normal condition. To clear the tank-empty signal, the tank must be
refilled to a point that closes the level switch. At that instance, the alarm
disappears and the MSC-L resumes to normal use. It is not required to
reset the condition with normal alarms.
[Additive temperature]
With this entity you can select the
physical source for the additive stream
temperature measurement.
RTD-1, RTD-2, RTD-3, RTD-4, RTD-5, RTD-
6, AI-1, AI-2, AI-3, AI-4, AI-5, AI-6, AI-7, AI-8,
AI-9, AI-10, AI-11, AI-12, AI-13, AI-14, None
[Block valve feedback]
With this entity you can select the
physical source for the block valve feedback
function.
Any of the unused DI-DC-n, DI-AC-n, QPI-n,
AI-n, or None.
Entity
Description
Can be linked to...