IFM Electronic AC2620 Montageanleitung Seite 8

Mounting
When you use module lower parts without an addressing socket
(AC5000 oder AC5003), first address the module by placing it onto an
addressing unit (AC1154) and assign a free address between 1 and 31.
When you use module lower parts with an addressing socket
(AC5010) the modules can be addressed with the addressing adapter
E70213 later on.
Mount the module onto the wired module lower part of the AS-i net-
work, tightening torque 0.8Nm.
Electrical connection
The analog module is connected to the AS-Interface via the standard-
ised EMS (supply from AS-i).
Connection of a 2-wire Pt100 element to the AS-i module
AS-i module
Ch+
S-
Ch-
Connection of a 3-wire Pt100 element to the AS-i module
AS-i module
Ch+
S-
Ch-
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Pt100 element
Pt100 element
The terminals 1, 4, 7 and 10 (Ch+)
are connected to each other in the
module.
Terminal S- is not required.
3-wire Pt100 sensors supply more
exact results than 2-wire sensors
provided that the wire resistance is
the same.
The changeover between 2 and 3-
wire sensors is made via the para-
meter bit P3.