HIMatrix 10 Use in Fire Alarm Systems
HI 800 023 E Rev. 1.01 Page 65 of 72
Resistor
Field Clamp Terminal
Actuator
Field Clamp Terminal
Diode Resistor
Shunt
Line Monitoring Range (Open-Circuits
and Short-Circuits)
Protective Circuit for Short-Circuit
Figure 8: Example of Open-Circuit and Short-Circuit Monitoring of Digital Outputs
(Actuator Circuit)
For an example of how to configure the open-circuit and short-circuit monitoring of actors
using analog inputs, refer to Chapter Line Monitoring in the HIMatrix F35 Manual
(HI 800 149).
A suitable user program can be used to control visual display systems, indicator light
panels, LED indicators, alphanumeric displays, audible alarms, etc.
The routing of fault signals via the input and output channels or to transmission equipment
for fault signals must occur in accordance with the de-energize to trip principle.
Fire alarms can be transmitted from one HIMatrix system to a different system using the
existing Ethernet communication standard (OPC). Any communication loss must be
reported.
HIMatrix systems that are used as fire alarm systems must have a redundant power supply.
Precautionary measures must also be taken against power supply drops, e.g., the use of a
battery-powered horn. Uninterrupted operations must be ensured while switching from the
main power supply to the back-up power supply. Voltage drops for a duration of up to 10
ms are permitted.
If system failures occur, the operating system writes to the system signal or system variable
assigned in the user program. This allows the user to program fault signaling for faults
detected by the system. If a fault occurs, the HIMatrix system switches off the safety-related
inputs and outputs with the following effects:
The low level is processed in all channels of the faulty inputs.
All channels of the faulty outputs are switched off.
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