Siemens FS-250 Spécifications Page 48

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 68
  • Table des matières
  • DEPANNAGE
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 47
FS-250 Installation and Operation Manual
42
Addressable Device Circuit Wire Selection Guide
Each addressable device circuit must meet the following requirements:
Total loop resistance - 50 ohm maximum with 252 devices.(refer to following graph)
Total loop capacitance - 0.5uF max line to line and 1.0uF max line to shield
Line Resistance Graph
The terminal blocks of Siemens P2 devices are rated for a maximum of 14AWG wire.
110
130
260
10
240
120
230
260
100
250
90
180
220
80
240
210
70
200
60
180
50
170
170 230
40
160
160 220
190
100
30
150
Note: The total number of devices can not exceed 252.
The line resistance of each loop can also be calculated by using R=1260/N.
R is line resistance and N is the number of devices in the loop.
150 21090
20080
FDLC LINE RESISTANCE vs MAX NUMBER OF DEVICES
19070
140
Max Number of Devices Per Loop
60
13050
110
120
140
Line Resistance (ohm)
20
250
Technical Manuals Online! - http://www.tech-man.com
Vue de la page 47
1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 67 68

Commentaires sur ces manuels

Pas de commentaire