Connection Of A Temperature Detection; Instructions Of An Emc-Conform Installation - Keb Combivert Betriebsanleitung

Installation
3.2.3
3.3
GB - 36

Connection of a Temperature Detection

An external temperature sensor/switch can be connected to the terminals T1,
T2. The supply unit switches off with the error message E.OH during tripping.
As standard the evaluation at terminals T1 and T2 is switched off and must be
activated if necessary (application mode Pn.12="7").
other
Temperature sensor (PTC)
Tripping resistance 1650 Ω...4 kΩ
Reset resistance 750 Ω...1650 Ω
(acc. VDE 0660 part 302)

Instructions of an EMC-conform Installation

• To avoid coupled-in noise, separate
a) Line-supply cables,
b) Motor lines of frequency inverters/servo power controller,
c) Lay control and data lines (low-voltage level <48 V), with a distance of
at least 15 cm.
• In order to maintain low-resistance high frequency connections, earthing and
shielding, as well as other metallic connections (e.g. mounting plate, installed
units) must be in metal-to-metal contact with the mounting plate, over as large
an area as possible. Use earthing and equipotential lines with a section as
large as possible (min. 10mm2) or use thick earthing strips.
• If external interference suppression filters are used, then these must be installed
as close as possible to (<30 cm from) the interference source and in metal-
to-metal contact with the mounting plate, over as large an area as possible.
• Always equip inductive control elements (contactors, relays etc.) with
suppressors such as varistors, RC-elements or damping diodes.
• All connections must be kept as short as possible and as close as possible to
the earth, as free floating lines work as active and passive aerials.
• Keep connection cables straight (do not bundle). Install a non-assigned wire
on both sides of the protective conductor.
• The flow and return circuit must be twisted when the lines are not shielded, in
order to dampen common-mode noise.
• As a general principle use metal cable glands with shield connection.
PTC
other
T1
T2