Section I - Introduction
MN06065 Rev. 0.3 (8/97)2
Significant communication capability is available from
the standard AccuLoad II. The instrument is pro-
grammable for Polling, Polling and Authorization or
complete Remote Control via communications. The
EIA-232 communication port can be used to multi-
drop up to 16 AccuLoad IIs to an ASCII printer for
printing load tickets or it can be used to network up to
16 AccuLoad IIs to an automation system. Also
available is an additional communication port that is
EIA 485 interfacable. When used with a smart
printer; one that will signal when it is out of paper,
cover is open etc., the AccuLoad II can alarm and
display the reason for the printer not working. The
"speak when spoken to" protocol of AccuLoad II is
modeled after the ISO Standard 1155. This allows
quick access by an automation computer for opera-
tional and transaction information. The AccuLoad II
also has a built-in communication analyzer to aid in
the development and troubleshooting of communica-
tions. For additional information on the AccuLoad II
communications, see the Communications Manual
(Bulletin MN06069L).
The AccuLoad II Ratio Blender provides several
loading system control functions: Additive Injection,
Additive Pump, Pump Control, Alarm Control, Set
Stop, Valve Control, Back Pressure Control,
Automatic Adjustment of Final Trip Point.
•
Up to eight different additive injectors can be si-
multaneously paced.
•
The AccuLoad II will monitor and totalize the vol-
ume of additive injected by up to eight of the ad-
ditive injectors if the Additive Monitoring option is
purchased.
•
A contact is available to stop a pump or other
electrically operated equipment as well as a pro-
gram code that will set the time delay of that
stop.
•
A programmable Alarm Contact is available. It
can be closed on a Valve Fault, on any alarm or
not at all depending on how it is programmed.
•
The AccuLoad II contains the intelligence to con-
trol a Smith Model 210 or 215 Digital Control
Valve which will provide low flow start and multi-
stage shut-down.
•
AccuLoad II contains the intelligence to auto-
matically reduce the flow of product and ensure
the flow is within the pumping capabilities of the
system.
•
AccuLoad II, if so programmed, will automatically
adjust the final trip point of the batch (Preset).
Critical functions such as: minimum flow rate, excess
flow rate, temperature detection, preset volume over-
run and memory retention are monitored by internal
circuits. Any failure will signal closure of the valve.
Should the valve fail to close within 10 seconds after
having been signalled, a contact is closed. This can
be wired through external relays to shut off the pump
and/or kill power circuits.
Environmental fluctuations within specified limits
have virtually no effect on the operation of this control
system. AccuLoad II is available in an explosion-
proof housing for hazardous locations and a non-
explosion- proof housing for non-hazardous loca-
tions. (See Bulletin SS06017 for specifications.)
How To Use This Manual
This manual is to be used as a guide for AccuLoad II-
RBU firmware.
This manual is divided into seven sections: Introduc-
tion, Operations, Dynamic Displays, Program Mode,
Program Codes, Index, and Related Publications.
"Operations" describes the daily operation of Accu-
Load II and what is required of an operator to effec-
tively load the product.
"Dynamic Displays" describes the information that
can be displayed by AccuLoad II while in the
"READY" state or in the Run Mode.
"Program Mode" describes how to get into the Pro-
gram Mode, Program Directory Selection, Program
Code Selection, how to change a program parameter
and how to view the "Help Messages".
"Program Codes" gives an outline description of each
program code available in the instrument. For a brief
description of each code, the information or options
required for each code, and a place to record the pa-
rameters entered in each preset position see Bulletin
AB06034. For detailed information on each code see
Bulletin MN06066L.
The examples presented in this manual are for clarity
and your convenience. The values might vary for
your particular installation and/or operation.
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