
FPD-7024
|
Operation and Installation Guide | 2.0
Control Panel Terminal Connections
20
Bosch Security Systems, Inc. | 1/10 | F01U008458-03
Table 10: Option Bus Wiring Guidelines
Device Model Number
Wiring Run
Number
Maximum Allowed Cable Length
to Last Device (#18 Wire)
Current Draw (for reference)
D7030 LED Annunciator
1
1000 ft (304 m)
175 mA
D7030X LED Annunciator
2
500 ft (152 m)
175 mA x 2 = 350 mA
D7030 LED Annunciator
4
250 ft (76 m)
175 mA x 4 = 700 mA
FMR-7033 Remote
Keypad
1
2000 ft (608 m)
100 mA
FMR-7033 Remote
Keypad
2
1000 ft (304 m)
100 mA x 2 = 200 mA
FMR-7033 Remote
Keypad
4
500 ft (152 m)
100 mA x 4 = 400 mA
D7048/B Octal Driver
Module
1
500 ft (152 m)
330 mA
D7035/B Octal Remote
Relay
2
250 ft (76 m)
330 mA x 2 = 660 mA
FPP-RNAC-8A-4C
2
4000 ft (1219 m)
< 50 mA each
DX4020 Network Interface
Module
1
750 ft (229 m)
280 mA
Where more than one type of device is installed on a given wiring run, add together the alarm existing drawn
by all the devices on the wiring run to determine the maximum allowed distance between the option bus
terminals on the control panel and the last device on the wire run (the device farthest from the control panel).
Add up the total alarm load for option bus devices on the wire run, and use
Figure 7
to determine the maximum
allowed length for the run. For example, if the total load of option bus devices on a particular run is 400 mA, the
maximum length of the run can be up to 500 ft (152 m). No more than 4,000 ft (1,219 m) of wire can be
connected to the option bus terminals, even if the individual lengths of the runs are all within limit.
Figure 7
shows allowed lengths for18 AWG (1.2 mm). For16 AWG (1.5 mm) wire, cable lengths can be 1.5
times longer. For14 AWG (1.8 mm) wire, cable lengths can be 2.5 times longer. The 4,000 ft (1,219 m)
maximum length of connected wire still applies.