Figure 5-3: Typical Settings for Low Level Applications
Dry On
Wet On
Seconds Delay
0.3
0.3
30
10
3
30
10
1
3
1
A
A. Mode “Wet On” and 1 second time delay
5.1.1
Set the mode switch and switching time delay
Procedure
1. Select “Dry on” or “Wet on” mode.
2. Select 0.3, 1, 3, 10, or 30 seconds for the delay before switching output state.
Note
There is a five second delay before changes to the mode and time delay become
active.
5.2
LED indication status
shows the different operation statuses and how they are indicated by the LED.
Table 5-1: LED Indications
LED flash rate
Switch status
Continuous
Output state is on.
1 every second
Output state is off.
1 every 2 seconds
Uncalibrated.
1 every 4 seconds
Load fault; load current too high; load short
circuit.
2 times / second
Indication of successful calibration.
3 times / second
Internal PCB fault.
Off
Problem (e.g. supply).
Operation
Reference Manual
March 2022
00809-0100-4030
54
Reference Manual
Summary of Contents for Rosemount 2120
Page 1: ...Reference Manual 00809 0100 4030 Rev GA March 2022 Rosemount 2120 Level Switch Vibrating Fork ...
Page 4: ...4 ...
Page 8: ...Introduction Reference Manual March 2022 00809 0100 4030 8 Reference Manual ...
Page 14: ...Level switch overview Reference Manual March 2022 00809 0100 4030 14 Reference Manual ...
Page 32: ...Mechanical installation Reference Manual March 2022 00809 0100 4030 32 Reference Manual ...
Page 81: ...Reference Manual 00809 0100 4030 March 2022 Rosemount 2120 Level Switch 81 ...