Normal mode
Rising characteristic when rotating the drive
gear wheel clockwise.
Falling characteristic when rotating the drive
gear wheel counterclockwise.
Reverse mode
Rising characteristic when rotating the drive
gear wheel counterclockwise.
Falling characteristic when rotating the drive
gear wheel clockwise.
Adjusting the 0 or 4 mA output signal
Move actuator in the position in which the out-
put current is to be 0 or 4 mA.
Turn black adjustment wheel against the white
drive gear wheel to adjust the output current
to
– 3.98 to 4.02 mA for two-wire connection
– 0.01 to 0.02 mA for three-wire connection
Adjusting the 20 mA output signal
– Move the actuator to the position in which
the output current is to be 20 mA.
– Set the output current to 20
±
0.02 mA
using the span adjuster (see Fig. 16).
– Check the output signal adjustment for 0/4
mA, repeat adjustment if required.
Reverse mode
Span adjustment upon delivery
Maximum span
Minimum span
Span infinitely adjustable in this range
mA
0˚
N
0/4
20
80˚
270˚ 340˚
0˚
0/4
20
mA
80˚
340˚
R
Normal mode
Fig. 17
⋅
Span, range of adjustment
NOTE!
With reverse final control elements, the posi-
tion of the
extended
actuator stem corre-
sponds to the final position
"OPEN"
.
NOTE!
In three-wire connections, there is no polarity
reversal at zero crossing. The device indicates
0 mA over a range of 8 degrees. Therefore,
you should select a value as small as possible,
however, other than zero (e. g. +0.01 mA).
&+#&,