C.5.7 Toggle period
When the relay is in Toggle state it switches between On and Off at a rate defined by the
Toggle Period.
C.5.8 Relay output configuration
The relay output can be selected as either Normally Open or Normally Closed referring to
the contact position when the relay is de-energized. This also refers to the Alarm (Reset)
state.
The relay terminology can be summarized as shown in Table C-3:
Table C-3: Relay state terminology
Normally Closed Normally Open
Closed Open Open Closed
De-energized Energized De-energized Energized
Not Active Active Not Active Active
Alarm (Reset) Normal Alarm (Reset) Normal
Related information
Relay output configuration
C.5.9
Relay zones
You can use one or two set points for relays connected to the Rosemount 2410 Tank Hub.
Consequently, there are two or three zones in which different relay states can be specified.
For each zone you can set any of the three available relay states Normal, Alarm or Toggle.
For each set point you can specify a hysteresis zone preventing the relay from switching
back to its previous state as long as the source variable is changed only small amounts
around a certain set point. The principle of relay set points and hysteresis zones is shown in
the figure below. Note that in this example only two states are used.
Reference Manual Advanced configuration
00809-0100-2410 December 2019
Rosemount 2410 Tank Hub 165
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