Tyco Galaxy SC Controller User Manual

Tyco Electronics Galaxy SC Controller J85501F-1
7 - 23 Feature Descriptions Issue 13 February 2001
Derived
Channels
The Derived Channels feature is provided to group together a number of
system measuring values through the use of an arithmetic program line
to derive meaningful data to the user’s application. The feature is only
available on the Intelligent Galaxy SC. The system supports a total of 32
Derived Channels. You may enter a program line for each Derived
channel; the program line is an arithmetic expression which can take the
following entries:
• Parenthesis, +, - , *, /
• Numbers are accepted.
• Plant analog attributes: dc1 vdc (plant DC voltage), dc1 adc (plant
DC current), dc1 trd (plant total rectifier drain), dc1 ubt (plant
Universal Battery temperature).
• Rectifier current value: gxx adc, where xx is from 01 to 24.
• Remote monitor value attribute: cxyy val, where x is from 1 to 7, yy
is from 01 to FF.
• Derived channels value attribute: dxx val, where xx is from 01 to
32, except self recurse. For example: (c208 val + c308 val + dc1
vdc)/3.0
The program line can have up to 60 characters; the number of operators
and operands combined cannot exceed 10. To delete a program line of
an UDE, the set the program line to double quotes with nothing in
between (“
”
). A program line that contains some invalid operands will
activate the Invalid program Expression system alarm. For example,
if the program line contains c308 (channel 3 of remote Peripheral
module 08) and you remove the module from the system, the program
line is invalid. Each Derived channel has basic statistics associated with
it, and you can configure any of the 32 Derived Channels for Busy hour
statistics or Trend statistics. Please refer to the section on statistics for
details.
Energy
Management
The energy-management algorithm matches the number and ampacities
of all available battery plant rectifiers to the actual plant load
requirements, favoring the shutdown of smaller, less-efficient rectifiers
when plant load requirements are low enough to warrant selected
rectifier shutdown, thus maintaining the battery plant at maximum
efficiency without sacrificing reliability or creating nuisance alarms.
The Galaxy SC continuously monitors the number of connected
rectifiers, their individual ampacities, the actual output current being
delivered by each and the actual office load-current demand. With this
information, the algorithm strives to maintain the following
relationship:
ΣC
Ron
≥ max (I
Load or
ΣI
Ron
) X 1.04

Tyco Galaxy SC Controller Specifications

General

Brand	Tyco
Model	Galaxy SC Controller
Category	Controller
Language	English