KROHNE LS 4100 EN - Manual (Page 5)

03/2002 LS 4100/LS 4150 5
Electronics - General
Integration time approx. 0.5 s
Measuring frequency approx. 400 Hz
Hysteresis approx. 4 mm with vertical installation
Control lamp illuminated ring with two-colour
LED for status indication
green – output conductive
red – output blocks
Electronics - Transistor output (SW E72 T)
Power supply
10 … 55 V DC
Power consumption max. 0.5 W
Output floating transistor output
NPN/PNP selectable
Load current max. 400 mA (output - overload and
permanently short-circuit proof)
Voltage loss max. 1 V
Turn-on voltage max. 55 V DC
Blocking current < 10 µA
Protection class II
Overvoltage category III
Mode A - max. detection or overfill protection
B - min. detection or dry run protection
A/B-mode by polarisation of the power supply
Electronics - contactless electronic switch (SW E72 C)
Power supply
20 … 250 V AC, 50/60 Hz or 20 … 250 V DC
Output contactless electronic switch
Internal current requirement approx. 3 mA (via the load circuit)
Load current min. 10 mA
max. 400 mA
(at I > 300 mA the ambient temperature can be
max. 60°C) max. 4 A up to 40 ms
Protection class I
Overvoltage category III
Modes A/B-mode by electrical connection
in the connection plug
A - max. detection, overfill protection
B - min. detection, dry run protection
CE conformity
LS 4100/LS 4150 vibrating level switches meet the protective regulations of EMC
(89/336/EWG) and NSR (73/23/EWG). Conformity has been judged acc. to the following
standards:
EMC
Emission EN 50 081 - 1: 1992
Susceptibility EN 50 082 - 2: 1995
NSR EN 61 010 - 1: 1993