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11 Safety Bus Manual — P/N LS10177-000HI-E:B 02/21/2019

Section 2: Introduction

The Safety Bus system makes it possible to carry out gas and fire detection functions as well as

extinguishing/release functions on a single bus, guaranteeing high safety levels. The system con-

sists of one or two control boards inserted in the H-S81-HS series panels, and a number, varying

from 1 to 64, of addressed field modules.

The system consists of the following components:

2.1 Principles of Operation

Communication between the control board and the addressed modules is based on CAN (Controller

Area Network) protocol with ring architecture to guarantee maximum operation even in the event

of a single failure. All the field modules are connected to the control panel forming a ring. Each

module connected to the communication ring is assigned a unique address by the SB-PRG pro-

grammer. All module operating parameters are set by the Pro-HS81 panel configuration program.

During standard operation, the control board checks the communication integrity of the ring by

monitoring the state of the I/O modules present along the ring. All changes in the state of the I/O

module channels are sent from the module to the control board. All failures concerning the modules

and the communication ring are displayed on the control panel monitor. The table below lists the

module failure types displayed on the control panel:

Part Number Description Input channels

Output

channels

H-S81-HS H-S81-HS series panel * *

S81-F7011-1 Safety Bus (mono/duplex) control board * *

CCT8 Termination cable for S81-F7011-1 boards

SB-SIM Supervised input modules 8 supervised *

SB-SIM-GM Supervised input modules with earth leakage monitor

Note: One (1) SB-SIM-GM is required per power supply for ground fault

supervision

8 supervised *

SB-AIM 4-20mA analog input module 8 4-20mA analog *

SB-SCM Solenoid valve output control module * 8 supervised

SB-NCM Notification Appliances output control module * 8 supervised

SB-ECM Extinguishing/Release system I/O module 8 supervised 4 supervised

SB-PRG SB module programmer * *

Table 2.1 List of Safety Bus System Components

Figure 2.1 Safety Bus system

Honeywell H-S81-HS Manual

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