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FEEDBACK ADJUSTMENT DEVICE with 2 release outputs (usable even as delayed
amperometric from internal panel).
It carries out the control 2 analogue signals in input (setting and
feed-back), revealing the deviation by means of adjustable window comparator
and giving, in consequence, 2 static outputs which refer to the minimum
and maximum limit.
It is used to command devices for the automatic centring of any type
of cloth or rolled metal, to regulate the translation space of trolleys
or in feed-back systems with release command of fixed speed motors in
both rotational senses (regulation of the stepless speed change gear
speed with reference to the induction signal)
Supply:
110/220 VAC ±10% 50/60Hz; 3 VA - upon request 24 VAC;
Inputs:
* setting, available for 0 ÷ 10 VDC signals (or potentiometer),
4 ÷ 20 mA or for Selet B18-0.5T Selet type linear sensors
* feed-back signal from amperometric transformer 4 VAC 0.2 A, 0 ÷
10 VDC, 4 ÷ 20 mA, 0 ÷ 60 mVDC signals or from Selet B18-0.5T
type linear sensor
* adjustment of comparison windows from external potentiometer or signal
0 ÷ 10 VDC (or eventually from internal trimmer).
Outputs:
* 2 static release outputs by means of NPN transistor possibility of
operation as adjustable amperometric threshold, with intervention time
which can be calibrated from 0.5 to 5s.
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