Emerson Rosemount 2410 - Page 166

Figure C-1: Relay Zones
1
A
H
I
J
L
L
K
B
C
D
E
F
G
F
2
3
4
A. Source signal
B. Set Point 2
C. Set Point 1
D. Relay state
E. Relay State Zone 1
F. Relay State Zone 2
G. Relay State Zone 3
H. Time
I. ZONE 3
J. ZONE 2
K. ZONE 1
L. Hysteresis zone
1. The source signal passes set point 1, and the relay state changes according to the
definition for Zone 1.
2. When the source signal returns into Zone 2, it does not change to the Zone 2 state
until it has passed the hysteresis zone.
3. The source signal passes set point 2, and the relay state is changed according to the
definition for Zone 3.
4. The relay switches back to the Zone 2 relay state when the source signal has passed
set point 2 and the associated hysteresis value.
Advanced configuration Reference Manual
December 2019 00809-0100-2410
166 Reference Manual