KROHNE OPTISWITCH 5200C 2wire EN - Manual (Page 22)

Mode on
the signal
condition-
ing instru-
ment
Level Signal
current -
Sensor
Analogue
input con-
trol 1)
Signal
lamp -
sensor
Signal
lamp -
signal
condi-
tioning
instru-
ment
Mode A
Overfill
protection
approx.
8 mA
>3.6 mA
<11 mA
Green
Mode A
Overfill
protection
approx.
16 mA
>13 mA
<21 mA
red
Mode B
Dry run
protection
approx.
16 mA
>13 mA
<21 mA
red
Mode B
Dry run
protection
approx.
8 mA
>3.6 mA
<11 mA
Green
Fault signal
(mode A/B)
any approx.
1.8 mA
<=3.6 mA
>=21.6 mA
6.4 Recurring test and function test
Acc. to WHG and IEC 61508. The implementation of the
recurring test acc. to WHG is stipulated in the general type
approval, item 8.
Take note of the overwhelming approvals, if OPTISWITCH
5200 C, 5250 C Ex is used as part of an overfill protection
system according to WHG.
OPTISWITCH 5200 C, 5250 C Ex in conjunction with an SU
501 (Ex) is qualified in mode A (overfill protection) for use in
measuring chains of SIL2 acc. to IEC 61508 (redundant, SIL3).
1) Electronics directly evaluated via the analogue input of a control system
(without signal conditioning instrument)
22 OPTISWITCH 5200 C, 5250 C - with two-wire output
Set up
30435
-EN
-060831