Installation Manual

NetSure™ LMS Data Processing Unit
Installation Instructions, Section 5879 (Issue BA, April 7, 2014)
Spec. No: 58650500, 586505500 Code: Section 5879
Model No: LMS1000 Issue BA, April 7, 2014
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4-20 mA signal (Y or N): Allows simple programming of
analog channels when monitoring 4-20 ma current loop
input signals. The system automatically makes the
necessary offset correction required when monitoring
these inputs.
If "Voltage" is selected, the following attribute is
presented...
Enter the transducer full-scale output in Volts: Specifies
the maximum voltage (in volts) to be measured by this
channel.
c. Scale Factor (20000 maximum): Equals full scale rating of
the sensing device. This attribute is not presented when
"Digital Temp" is selected as the "Transducer Type".
d. Polarity (‘+’ for Positive [default], ‘-‘ for Negative):
Provides means to specify the sign of the signal
connected to an analog input. This allows the value of the
input signal to be processed correctly for display to the
user and for calculation of statistics and alarm limit
activation.
Positive polarity (‘+’): (default value) The value of the
input signal is displayed using the sign as provided by the
hardware circuitry. The processing of alarm limits and
statistics is performed with the most positive value being
a ‘High’ signal and the most negative value being a ‘Low’
signal.
Negative polarity (‘-‘): The value of the input signal is
inverted (multiplied by -1) before it is displayed or used
for processing. The processing of alarm limits and
statistics is performed with the most negative value
being a ‘High’ signal and the most positive value being a
‘Low’ signal. For example, given a float voltage of –54.0V,
–56.0V is a high limit.
e. Alarm Limit Mode: Provides means to specify how
processing of alarm limits is performed.
Normal mode: (default value) Analog alarm limits are
processed using the ‘High’ and ‘Low’ values as
determined by the analog channel’s polarity attribute
(discussed above).
Bipolar mode: Analog alarm limits are processed using
zero as the ‘Low’ value and the most positive or negative
value as the ‘High’ value. An alarm (high or low) can only
occur if the sign of the alarm limit matches the sign of the
reading value.
For example, this may be used in detecting both high
charge current and a high discharge current on a battery
shunt. Assume a shunt is wired for a negative float
current reading, and it has a high alarm limit of –6.0
amps to detect a high float current. It can then also have
a high limit of +100.0 amps to detect a high discharge
current. So, in this example there are two high alarms,
with opposite polarity.
f. Four Alarm Limits each with the following attributes:
Enabled (Y or N): Y=this alarm limit is enabled. N=this
alarm limit is disabled.
Value (5 characters-20000 maximum): Threshold value
of the alarm limit. This value cannot exceed the scale
factor.
Type (H for high, or L for low): Determines if this is a high
or low limit setpoint.
Name (10 characters maximum): User determined
description of the alarm. To use the rate (analog channel
maximum load percentages) feature, this description
must contain the text CAP or SIZ.
Notification Code: This parameter applies only to TL1
commands/messages. Consists of one of the following
codes which describes the severity of this alarm or event
condition.
CR - critical alarm NA - not alarmed
MJ - major alarm NR - not reported when event occurs
MN - minor alarm
Service Effect Code: This parameter applies only to TL1
commands/messages. Consists of one of the following
codes which describes how this alarm or event affects
service.
SA = service-affecting condition, immediate action
required
NSA = nonservice-affecting condition, action required
Alarm Class Number (0-8): Assigns one of the 8 alarm
classifications to this alarm limit. (0 represents no alarm
class.)
Condition Type (20 characters maximum): This
parameter applies only to TL1 commands/messages. A
description of this alarm or event state. Only alpha
characters can be entered for this parameter. TL1 uses
specific values for this parameter. Refer to
TA-NWT-001360 Tables 5-1 through 5-4.
Condition Description (40 characters maximum): This
parameter applies only to TL1 commands/messages. A
user-defined text message which provides a detailed
description of the alarm, event, or condition of the limit