WIKA RLS-1000, Operating Instructions Manual

Page: 15 / 92

EN
WIKA operating instructions models RLS
14235429.01 01/2018 EN/DE/FR/ES
15
Connection with inductive load
With inductive loads, the float switches should be protected by
connection to an RC element or a free-wheeling diode.
Protective RC elements
Depending on the operating voltage, use RC elements exclusively in
accordance with the table below. RC elements other than those specified
here will lead to the destruction of the reed switch.
RC elements for reed contacts 10 ... 40 VA
Voltage Resistance Capacitance Type of RC element
AC 24 V 100 Ω 0.33 μF A 3/24
AC 48 V 220 Ω 0.33 μF A 3/48
AC 115 V 470 Ω 0.33 μF A 3/115
AC 230 V 1,500 Ω 0.33 μF A 3/230
RC elements for reed contacts 40 ... 100 VA
Voltage Resistance Capacitance Type of RC element
AC 24 V 47 Ω 0.33 μF B 3/24
AC 48 V 100 Ω 0.33 μF B 3/48
AC 115 V 470 Ω 0.33 μF B 3/115
AC 230 V 1,000 Ω 0.33 μF B 3/230
RC element,
see table
S1
AC 24 ... 230 V
R
C
S1
DC 24 ... 230 V
+
–
AC voltage DC voltage
Free-
wheeling
diode, e.g.
1N4007
5. Commissioning, operation