Analog Output; Programming; Run; Volume - Siemens SITRANS LR 300 Instruction Manual

Analog Output

The SITRANS LR 300 can be programmed to provide an analog output (P200) of 4 to 20
mA, and for proportional or inverse span.

Programming

When the unit is put into PROGRAM mode, the analog output level holds its prior value
unless the mA output function is the common output or HART is the communication
protocol.

Run

The analog output responds in the following manner:
P001 = 1 (level)
0 and 100% are percentage of full-scale reading (m, cm, mm, ft, in).

Volume

To program the unit for volume, set:
• operation (P001) to level 1 (see page 56)
tank shape (P050) to a value other than 0 (see page 58)
•
• other volume parameters (P051 to P053) as required
To program the unit for ullage, set:
operation (P001) to space 2 (see page 56)
•
• tank shape (P050) to a value other than 0 (see page 58)
• other volume parameters (P051 to P053) as required

Fail-Safe

When the Fail-Safe timer (P070) expires, the mA output responds as follows:
Fail-Safe Mode (071)
1 = high
2 = low
3 = hold
7ML19985CL02
P001 = 2 (space a.k.a. ullage)
Status (4 - 20)
22
2
hold
SITRANS LR 300 – INSTRUCTION MANUAL
P001 = 3 (distance)
Status (20 - 4)
2
22
hold
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