Siemens LR 460 사용자 설명서
7ML19985JM01
SITRANS LR 460 – INSTRUCTION MANUAL
Page 53
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3.4. Measuring Limits
You can view maximum and minimum values for the sensor values and the
process temperature.
In SIMATIC PDM open the menu View – Peak Values, and click on the
appropriate tab.
appropriate tab.
3.4.1. Min.
Measured
Value
1
(default 0.000)
The minimum recorded Sensor value, defined in Sensor units.
3.4.2. Max. Measured Value
The maximum recorded Sensor value, defined in Sensor units.
3.4.3. Min. Sensor Value (default 0.000) – PROFIBUS PA only
Defines the minimum usable value for the measuring range (physical limit of the
sensor) in Sensor units.
3.4.4. Max. Sensor Value (default 100.000) – PROFIBUS PA only
Defines the maximum usable value for the measuring range (physical limit of the
sensor) in Sensor units.
3.4.5. Process Temperature Min.
The minimum recorded temperature of the internal electronics.
Open the menu View – Peak Values and select the tab Temperature. If necessary,
click on the Reset button.
click on the Reset button.
3.4.6. Process Temperature Max.
The maximum recorded temperature of the internal electronics.
Open the menu View – Peak Values and select the tab Temperature. If necessary,
click on the Reset button.
click on the Reset button.
3.5. Detailed Setup
3.5.1. Fail-safe
3.5.1.1. LOE (Loss of Echo) Timer
Amount of time, in minutes, that a Loss of Echo must persist, before the
device goes into Fail-safe mode. See Fail-safe Mode for more details.
3.5.1.2. Restrict LOE (Loss of Echo)
Restricts the rate at which the detected echo is reported when a LOE
condition ends, to prevent an immediate jump to the new echo. The rate
of restriction is the same as the response (fill/empty) rate.
1.
In PDM, open View menu, scroll down to Peak Values, and click Sensor tab.
Values
Range: 0.00 to 720 (minutes)
Default: 10.000
Default: 10.000
Options
YES (ON) /NO (OFF)
Default: YES
Default: YES