Basler BE1-CDS220, Instruction Manual

Page: 124 / 476

6-6 Reporting and Alarm Functions BE1-CDS220
Table 6-3. Logic Variable Status Report Format
5
0
T
P
T
1
5
0
T
P
T
2
5
0
T
P
T
5
0
T
N
T
1
5
0
T
N
T
2
5
0
T
N
T
5
0
T
Q
T
1
5
0
T
Q
T
2
5
0
T
Q
T
5
1
P
T
1
5
1
P
T
2
5
1
P
T
5
1
N
T
1
5
1
N
T
2
5
1
N
T
5
1
Q
T
1
5
1
Q
T
2
5
1
Q
T
B
F
T
8
7
N
D
T
8
7
R
T
8
7
U
T
2
N
D
H
A
R
5
T
H
H
A
R
S
P
A
R
E
1
6
2
1
6
2 S
G
0
S
G
1
S
G
2
S
G
3 0
0
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 1
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 2
0 2
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 3
0 3
1
V
O
A
V
O
1
V
O
2
V
O
3
V
O
4
V
O
5
V
O
6
V
O
7
V
O
8
V
O
9
V
O
1
0
V
O
1
1
V
O
1
2
V
O
1
3
V
O
1
4
V
O
1
5
I
N
1
I
N
2
I
N
3
I
N
4
I
N
5
I
N
6
I
N
7
I
N
8
S
P
A
R
E
2
A
L
M
M
A
G
A
L
M
M
I
N
A
L
M
L
G
C
C
K
T
M
O
N
1
0
1
T 1
0
1
C
1
0
1
S
C
3
2 3
3 3
4 3
5 3
6 3
7 3
8 3
9 4
0 4
1 4
2 4
3 4
4 4
5 4
6 4
7 4
8 4
9 5
0 5
1 5
2 5
3 5
4 5
5 5
6 5
7 5
8 5
9 6
0 6
1 6
2 6
3
5
0
T
P
P
U
1
5
0
T
P
P
U
2
5
0
T
P
P
U
5
0
T
N
P
U
1
5
0
T
N
P
U
2
5
0
T
N
P
U
5
0
T
Q
P
U
1
5
0
T
Q
P
U
2
5
0
T
Q
P
U
5
1
P
P
U
1
5
1
P
P
U
2
5
1
P
P
U
5
1
N
P
U
1
5
1
N
P
U
2
5
1
N
P
U
5
1
Q
P
U
1
5
1
Q
P
U
2
5
1
Q
P
U
B
F
P
U
8
7
N
D
P
U
8
7
R
P
U
S
P
A
R
E
3
A
R
S
T
K
E
Y T
R
S
T
K
E
Y
4
3
1
4
3 2
4
3 3
4
3 4
4
3 5
4
3 6
4
3 7
4
3
6
4 6
5 6
6 6
7 6
8 6
9 7
0 7
1 7
2 7
3 7
4 7
5 7
6 7
7 7
8 7
9 8
0 8
1 8
2 8
3 8
4 8
5 8
6 8
7 8
8 8
9 9
0 9
1 9
2 9
3 9
4 9
5
DEMAND FUNCTIONS
The demand reporting function continuously calculates demand values for the three-phase currents,
neutral current (3-phase residual 3IO), and negative-sequence current. Demand values are recorded with
time stamps for Peak Since Reset, Yesterday's Peak, and Today's Peak. Programmable alarm points can
be set to alarm if thresholds are exceeded for overload and unbalanced loading conditions.
Demand Calculation and Reporting Function
Thermal Demand Calculation Method
The demand reporting function incorporates an algorithm to digitally simulate a thermal or exponential
response. Thermal demand values are computed by an exponential algorithm with the demand interval or
response period defined as the time taken by the meter to reach 90 percent of the final value for a step
change in the current being measured. The demand interval and monitored CT can be set independently
for the phase, neutral, and negative-sequence demand calculations.
Block Demand Calculation Method
The block demand method calculates the average value of the measured current for the time interval set
by the demand reporting function. This value remains constant, is stored in registers, and reported for the
duration of the following time interval. At the end of the time interval, the calculated average for the
previous time interval is again stored in registers and reported for the duration of the following time
interval. If you have set a fifteen-minute time interval and block demand calculation, the reported value for
fifteen minutes is the average value of the measured current for the previous fifteen minutes.
Sliding Block Demand Calculation Method
Sliding block demand method calculates the average value of the measured current for the time interval
set by the demand reporting function. This value is stored in registers and reported for one minute. After
one minute has elapsed, the sliding block demand method again calculates the average value of the
measured current for the set time interval including the most recent minute. This value is updated each
minute.