Rosemount 3095 - Set Auto Output Limits; Choose Setpoint Values

Rosemount Model 3095 Multivariable
™
Level Controller
4-8
Set Auto Output Limits
Output limits determine the allowable minimum and maximum control
output values when the controller is in automatic mode.
Output Hi Limit For example, the minimum allowable control output may be 7.2 mA
(20% of valve stroke) and the maximum allowable control output may
be 16.8 mA (80% of valve stroke).
Output Lo Limit
Choose Setpoint Values
Setpoint limits define the minimum and maximum process setpoint
values that can be used by an operator. For example, in a 100 inch tall
tank, the minimum allowable setpoint may be set to 60 inches, while
the maximum allowable setpoint may be set to 90 inches.
Setpoint Hi Limit
CAUTION
Selecting a setpoint near the top of the tank is not recommended.
Overshoot potential at PID control could cause overflow.
Setpoint Lo Limit
Setpoint Setpoint is the defined setpoint for the controller when in AUTO
(Automatic) mode. When in AUTO mode, the controller uses the
selected Control Type and control parameters to maintain the level at
the target setpoint.
Factory Default: Level units (see page 4-2)
Valid Range: Setpoint Lo Limit to Setpoint Hi Limit
HART Comm.
6, 2, 1, 1, 3
HART Comm.
6, 2, 1, 1, 4
Variable Factory Default
Valid Range
Auto Out Hi Limit
100% 9.4% to 105% and
>
(out_lo_limit +10.0)
Auto Out Lo Limit
0.0% –0.6% to 95% and
<
(out_hi_limit –10.0)
HART Comm.
6, 2, 2, 4
HART Comm.
6, 2, 2, 5
Variable Factory Default
Valid Range
Setpoint Hi Limit
level_url level_lrl to level_url and
>
sp_lo_limit
Setpoint Lo Limit
level_lrl level_lrl to level_url and
<
sp_hi_limit
HART Comm.
2