ASCOM Ascotel 2025 System Manual page 831

ascom Ascotel 2025/2045/2065
Rating Examples
Example 1
Office 45 with 1 expansion keypad and 1 alpha keyboard
Power requirements as per Tab. 4.33: 890 mW
Tab. 4.34 indicates:
• Maximum line length with a wire diameter of 0.4 mm: 1,000 m
• Maximum line length with a wire diameter of 0.6 mm: 1,200 m
Example 2
2 Office 30 without expansion keypad
Power requirements as per Tab. 4.33: 2 x 900 mW = 1800 mW.
Tab. 4.34 indicates:
• Maximum line length with a wire diameter of 0.4 mm: 498 m
• Maximum line length with a wire diameter of 0.6 mm: 640 m
Example 3
Evaluation of an existing line installation with two partial lines:
Tab. 4.35: Existing line consisting of 2 partial lines
Partial line
1
2
1 + 2
Conclusion: The existing line cannot be used as an AD2 bus as the permissible line
length in accordance with Tab. 4.31 is exceeded.
4.60 Cabling Interfaces
Diameter
(mm)
0.4
0.6
Resistance R
( W )
60
140
HBT_20321104_04/B0_en
Line length from
Tab. 4.34 (m)
213
1120
1333