SPS IDNet Wiring
, Continued
To connect addressable devices/detectors to the SPS IDNet using Class B wiring, read the
following instructions.
1. Under AS 1670.1 Class B wiring is allowed only for a maximum of 40
addressable devices.
2. A ferrite bead is required on the SPS IDNet cable.
3. On TB1, jumper B+ to A+, and jumper B- to A-.
4. Route wire from the B+, B- terminals to the devices.
The illustration below shows Class B wiring.
Figure 5-12. Class B (string) Wiring