Rockwell Automation 1426 PowerMonitor 5000 Unit - Manual (Page 160)

160 Rockwell Automation Publication 1426-UM001F-EN-P - November 2013
Chapter 7 Logic Functions
Equal To
An Equal To test condition arms the setpoint for activation when the monitored
value exactly equals the threshold, and dis-arms the setpoint when the value no
longer equals the threshold. Hysteresis is ignored in the Equal To test condition.
Figure 25 illustrates this. In Figure 25 e, the setpoint is armed at point A, dis-
armed at point B, and armed at point C. Point d also arms the setpoint but the
value changes at point e before the assert delay time passes.
Figure 25 - Equal To Test Condition
Setpoint Logic Gates (M6 model)
Up to 10 logic gates can be used to logically combine setpoints to enable output
actions. Each logic gate can have up to four inputs. Select among AND, NAND,
OR, NOR, XOR or XNOR logic. XOR and XNOR use inputs 1 and 2.
In Figure 26 , Setpoint Output 1 activates when Setpoint 1 asserts. Setpoint
Output 2 activates when both Setpoint 1 and Setpoint 2 assert.
Figure 26 - Setpoint Example
Assert
Delay
Deassert
Delay
Output
Threshold
A B C
d e
Assert
Delay
Setpoint 1
· Parameter Selection 1
· Reference Value 1
· Test Condition 1
· Evaluation Type 1
· Threshold 1
· Hysteresis 1
· Assert Delay Seconds 1
· Deassert Delay Seconds 1
Setpoint 2
· Parameter Selection 2
· Reference Value 2
· Test Condition 2
· Evaluation Type 2
· Threshold 2
· Hysteresis 2
· Assert Delay Seconds 2
· Deassert Delay Seconds 2
Logic Gate 1
· Logic Level 1 Gate 1
Function: AND
· L 1 _ G1 Input 1 : Setpoint 1
· L 1 _ G1 Input 2 : Setpoint 2
· L 1 _ G1 Input 3 : Disabled
· L 1 _ G1 Input 4 : Disabled
Setpoint Output 1
Setpoint Output 1 Input Source : Setpoint 1
Setpoint Output 1 Action
Setpoint Output 2
Setpoint Output 2 Input Source : Logic Gate 1
Setpoint Output 2 Action