Burkert Type 8055 User Manual download pdf (Page 32)

SE 56

210_EN_BU_4_3_5X.d

(POS. 6.6-6.7) Function and the range of current output n.1-2 [OUT.mA1-2=X÷XX±]

Choice of the function and the range of current output N.1-2. The current output N.1 is optional and

it is mounted on the main board. There are three fields to modify for this function:

q Scale zero: 4 or 0 mA ; Full scale: 20 or 22 mA

q Field: + = positive, - = negative, ± = both, -0+ = central zero scale

The values corresponding to the scale points are shown in the following chart:

In hardware alarm conditions “HW ALARM” (interrupted coils, empty pipe, measure error) the current

value is programmed by the function “mA VALL. FAULT” (pos. 4.7) and it is expressed as percentage

of a fixed current range, where: 0% = 0 mA e 110% = 22 mA.

CURRENT VALUES IN mA ASSOCIATE TO THE % VALUE OF FULL SCALE

REVERSE FLOW VALUE ZERO DIRECT FLOW VALUE

POSSIBLE FIELD

≤

110%

-100% 0% +100%

≥

+110%

OutmA = 0 ÷ 20 + 0 0 0 20 20

OutmA = 0 ÷ 22 + 0 0 0 20 22

OutmA = 4 ÷ 20 + 4 4 4 20 20

* OutmA = 4 ÷ 22 + 4 4 4 20 22

OutmA = 0 ÷ 20 - 20 20 0 0 0

OutmA = 0 ÷ 22 - 22 20 0 0 0

OutmA = 4 ÷ 20 - 20 20 4 4 4

OutmA = 4 ÷ 22 - 22 20 4 4 4

OutmA = 0 ÷ 20 ± 20 20 0 20 20

OutmA = 0 ÷ 22 ± 22 20 0 20 22

OutmA = 4 ÷ 20 ± 20 20 4 20 20

OutmA = 4 ÷ 22 ± 22 20 4 20 22

OutmA = 0 ÷ 20 –0+ 0 0 10 20 20

OutmA = 0 ÷ 22 –0+ 0 1 11 21 22

** OutmA = 4 ÷ 20 –0+ 4 4 12 20 20

OutmA = 4 ÷ 22 –0+ 4 4.8 12.8 20.8 22

22 mA

20 mA

-110% F.S. -100% F.S. +100% F.S. +110% F.S.

zero

I (mA)

20 mA

-110% F.S. -100% F.S. +100% F.S. +110% F.S.

zero

4 mA

I (mA)

12 mA

4 mA

* Example 1: out 4÷22 +

** Example 2: out 4÷20

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