Yokogawa RAMC - Manual (Page 34)

<6. ELECTRONIC TRANSMITTER (-E)>
6-8
IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
6.2.5 Setting of damping (F2-)
Function F21 allows damping the output with a certain time constant (63% value). Normally the time constant
is set to 1 sec.
The selection of the time constant is as follows:
Description Selection Key Indication
Change to setting mode Enter
Display mode
F1-
Setting mode →
Enter
F2-
F21
Selection damping
constant
or
or
or
0 s
1 s
5 s
10 s
Enter
Enter
→
Enter
2 x →
Enter
3 x →
Enter
F21 0
F21
F21 1
F21
F21 5
F21
F21 10
F21
Back to display mode ↑
↑
F2-
Display mode
Note: If you press “↑" instead of “Enter”, you can return from the selected point to the previous menu
without activating the displayed parameter.
6.2.6 Selection / Adjustment 4-20 mA / 0-20 mA (F3-)
Function F3- sets the current output to 4-20 mA or 0-20 mA. In addition, offset and span have to be
readjusted. Offset compensation is for fine tuning the 0 or 4 mA point. Span or range compensation is for
precise adjustment of the 20 mA point.
For compensating the output, an ampere metre (mA) should be connected to the circuit loop. For wiring refer
to the diagrams in chapter 3.
The current output is set according to customer specifications at the factory.
Switching the output is executed as follows:
Description Selection Key Indication
Change to setting mode Enter
Display mode
F1-
Setting mode
Output selection 2 x →
Enter
Enter
F3-
F31
F31 0-20
Selection
or 0-20
4-20 Enter
→
Enter
F31
F31 4-20
F31
Setting function
Offset-Adjustment →
Enter
F32
F32 00
Offset-Adjustment
(Setting current to 0/4 mA) Increase
Decrease
if 0/4 mA ↑
→
Enter
F32 in steps of +1 (+20 µA)
F32 in steps of -1 (-20 µA)
F32
Setting function
Span setting
Enter
F33
F33 0
Span setting
(Setting current to 20 mA) Increase
Decrease
if 20 mA ↑
→
Enter
F33 in steps of +1 (+20 µA)
F33 in steps of -1 (-20 µA)
F33
Back to display mode ↑
↑
F3-
Display mode