Lamtec VMS 4 User Manual

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Appendix Feedback on TPS channels
Positive connection ____________________________________________________________
Since the FMS, in the case of three-point step channels, adjusts the damper
until the actual value is equal to the set-point value, the feedback potentiometer
must always reliably correspond to the damper position.
The damper motor potentiometer connections must be positive interlock
connections, i.e. not able to rotate.
In addition potentiometers with high quality standards must be used
(see below).
If one of the two points is not given, two independent potentiometers (not
dual-operated potentiometers) per channel must be used for the feedback.
____________________________________________________________
Example of positive
potentiometer connection The motor damper connection must always be a positive interlock.
Error-proof feedback In the case of single-channel feedback of TPS outputs, only authorised
potentiometers may be used. These must be switched directly.
Examples of potentiometers The following potentiometers are authorised for use as sole feedback in the
case of FMS, on condition that they are positively connected to the damper:
1. Novotechnik SP-Serie Rating: 5kS*
2. Contelec PL240 Rating: 1kS -5kS*
3. Contelec PL310 Rating: 5kS*
4. Contelec PL295 Rating: 5kS*
5. Bourns 6639S-095-.. Rating: 5kS*
Other potentiometers are admissible only after consultation with
LAMTEC or the TÜV.
Examples of servomotors Servomotors with approved potentiometer, fitted with a positive interlock
connection:
Schimpf All motors with feedback type R1*and type R2*
Landis & Geyer SQM series with potentiometer PL 240
Haselhofer HD 60 D 2 with Novotechnik potentiometer
Haselhofer HD 60 D 10 with Novotechnik potentiometer
Aris WAN1, WAN6
Regeltechnik
Kornwestheim ST 5102 and ST 5113
Regeltechnik
Keller CA03 and CA12
Auma Address enquiries to the manufacturer
KFM Regelungstechnik 4d124B
Other motors are admissible only if the potentiometer connection forms a
positive interlock or two independent potentiometers are used for feedback.
* also obtainable through LAMTEC

Lamtec VMS 4 Specifications

General

Brand	Lamtec
Model	VMS 4
Category	Control Systems
Language	English