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6-38 Programming MN792
Setpoint Sum 1
Setpoint Sum 1 allows the summing and scaling of three analog inputs to produce SPT. Sum Output [294].
Note: This block is ignored by the drive unless [294] is connected to a nonzero destination tag.
Input 0 and Input 1 have individual ratio and divider scalers, and signs. Input 1 has an additional deadband
function set by Deadband Width. When the input is within the deadband, the output clamps to zero to ignore any
noise. This parameter is useful when digital setpoints are used (for example from a 5703, serial
communications, or the Raise Lower function block). The inputs have symmetrical limits set by Limit. Input 2 has
no scaling or limits. The output after Input 0, Input 1, and Input 2 are summed is also clamped by Limit before
producing SPT. Sum Output.
1 SETUP PARAMETERS
2 SETPOINT SUM 1
Ratio 1
Ratio 0
Sign 1
Sign 0
Divider 1
Divider 0
Deadband Width
Limit
Input 2
Input 1
Input 0
Setpoint Sum 1
[292] Sign 0 Positive
Tag Parameter
Factory Setting
A2
Analog
Input 1
[294]
SPT Sum
Destination
A/B
[208] Ratio 0 1.0000
[309] Input 0 0.00%
[420] Divider 0 1.0000
[423] Input 2 0.00%
+
+
+
[6] Ratio 1 1.0000
[100] Input 1 0.00%
[131] Deadband Width 0.00%
A/B
+
-
+
-
[419] Divider 1 1.0000
[8] Sign 1 Positive
[375] Limit 105.00%
[86]
Diagnostic
Connection
[294] SPT Sum 1 Dest 390
Parameter Descriptions
SPT. Sum 1 Destination [294] (Set in Configure I/O::Block Diagram Parameters)
Refer to the diagnostics function block description.
Range: 0 to 549
SPT. Sum Output [86] (Read in Diagnostics Parameters)
Refer to the diagnostics function block description.
Range: R/O
Ratio 1
Analog input 1 scaling.
Range: –3.0000 to 3.0000
Ratio 0
Input 0 scaling.
Range: –3.0000 to 3.0000
Sign 1
Analog input 1 polarity.
Range: 0 : Negative
1 : Positive
Sign 0
Input 0 polarity.
Range: 0 : Negative
1 : Positive
Divider 1
Analog input 1 scaling. Dividing by 0 (zero) results in a zero output.
Range: –3.0000 to 3.0000
Divider 0
Input 0 scaling. Dividing by 0 (zero) results in a zero output.
Range: –3.0000 to 3.0000
Deadband Width
Analog input 1 deadband width. When Input 1 is within the deadband, the output clamps to zero to
ignore any noise.
Range: 0.00 to 100.00 % (h)
LIMIT
The Setpoint Sum 1 programmable limit is symmetrical and has the range of 0.00% to 200.00%.
The limit is applied both to the intermediate results of the ratio calculation and the total ouput.
Range: 0 : False
1 : True
INPUT 2
Input 2 value. The factory settings do not connect this input to any analog input.
Range: –200.00 to 200.00 %
INPUT 1
Input 1 value. The factory settings connects this input to Analog Input 1 (A2).
Range: –200.00 to 200.00 %
INPUT 0
Input 0 value. The factory settings do not connect this input to any analog input.
Range: –200.00 to 200.00 %