SIEMENS
4/132
Siemens IK PI · 2015
AS-Interface
Slaves
8WD4 signaling columns
General data
4
■
Overview
The 8WD4 signaling columns are flexible in design and versatile
in use.
They are used in machines or in automatic processes for
monitoring complex procedures or as visual or acoustic warning
devices in emergency situations, e.g. for displaying individual
assembly stages.
8WD44 signaling columns with connection to AS-Interface cables
Two product series are available:
• 8WD42
- Thermoplast enclosure, diameter 50 mm
- Degree of protection IP54
• 8WD44
- Thermoplast enclosure, diameter 70 mm
- Advanced design and significantly improved illumination
- Fast and flexible connection using spring-type terminals
(optional)
- Integrated degree of protection IP65
A signaling column (from top to bottom) consists of the cover,
several light elements, the AS-Interface adapter element, the
connection element and (depending on the mounting method)
different fixing components.
One
acoustic element can be optionally mounted per signaling
column. The cover is included in the scope of supply of the
acoustic element and fixed in place. The cover supplied with the
connection element is then not needed.
Communications via AS-Interface
The 8WD4 signaling columns can be directly connected to the
AS-Interface bus system through an adapter element that can
be integrated in the column. Wiring outlay is reduced as the
result.
Connection
8WD42:
The two-wire bus cable is fixed to the screw terminals in the
connection element. The adapter element must be the first
module to be mounted on the connection element. A maximum
of 4 signaling elements can then be mounted on it.
The 8WD4228-0BB adapter element is a standard slave.
8WD44:
The two-wire bus cable is fixed to the screw or spring-type
terminals in the connection element. The adapter element must
be the first module to be mounted on the connection element.
The signaling elements can then be mounted on it.
The 8WD4428-0BE adapter element is a standard slave.
A maximum of 4 signaling elements can be mounted on it.
The 8WD4428-0BD adapter element with A/B technology en-
ables the connection of up to 62 slaves on one AS-Interface sys-
tem. The addressing socket provides user-friendly parameter-
ization of the AS-Interface elements. A maximum of 3 signaling
elements can be mounted on it.
© Siemens AG 2014