Function Description – Sizes
3–2 ©1998 AViTEQ Vibrationstechnik GmbH Version 02/2003
3.3 Scope of Operation
3.3.1 Regulation Types
The VIBTRONIC Controllers of type SC(E)…-2 are designed for voltage regulation.
Mains voltage fluctuations over a wide range (
10%) have no noteworthy effect
on the working stroke and, therefore, no effect on the conveyor rate.
3.3.2 Command Value Preset
The command value for the working stroke can optionally be preset by means of
l
a vibration-width adjuster (potentiometer) or
l
an external control input (0 … 10 V DC, 4 … 20 mA or 0 … 20 mA)
The working stroke changes proportionally with the command value, i.e.: the
larger the command value, the larger the working stroke.
3.3.3 External Release
The controller can be switched by the electronic release and, therefore, activated
by means of, for example, a PLC (programmable logic controller). This external
release can be made by means of
l
a potential free contact, or
l
a voltage signal of +24 V DC, or
l
an optical coupler.
If an external release is not planned, the appropriate terminals are short-circuited
with a plug-in bridge.
The terminal assignments for the individual connection options are explained in
chapter 4.2.
A plug-in bridge is mounted at the factory which absolutely must be removed in the
case of an external release. The controller may otherwise be destroyed!
NOTE
NOTE
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