Secutech Radio modules ST002033 Hoja De Datos
Los códigos de productos
ST002033
Seite 12
Security & Electronic Technologies GmbH
Terminal connection
SD 1420L, SD 1421L, SD 420L, SD 421L
Terminal Signal, Description
1 Plus of power supply (+11 V …+40 V),
reverse polarity protected over 2 diodes
2 Minus of power supply (0 V)
3 Measurement signal 4-20 mA, plus to supply
passive probes 4-20mA (for active probes don’t
connect this pin)
connect this pin)
4 Measurement signal 4-20 mA (minus for pas-
sive probes)
5 Minus for active probes 4-20mA (Attention:
standard until 2012, when ordering please spe-
cify in advance)
cify in advance)
(for passive probes 4-20mA don‘ connect this
pin)
pin)
6, 7, 8 Relay contact to signal the Min- or Max-Alarm
7 is the common, on alarm terminal 6-7 are
closed, for no alarm 7-8 are closed.
Maximum load:
closed, for no alarm 7-8 are closed.
Maximum load:
30 V, 500 mA !