Axis 02862-001 Access control • A9910 • I/O expansion module content_copy

The AXIS A9910 I/O Relay Expansion Module is an expansion module for access control systems, developed by Axis. It is designed to extend the I/O functionality of AXIS A9210 devices and enables the integration of additional inputs and outputs as well as relay functions into existing systems. The module is specifically designed for applications requiring a high number of I/O ports and relays, without the need to lay additional network cables.

Applications
This module is used in security and access control systems where flexible control of doors, alarm systems, lighting, or heating systems is required. It is particularly suitable for larger installations where multiple inputs and outputs need to be controlled via a central device. The integration of environmental sensors such as temperature or humidity sensors via Modbus sensor ports extends the functionality for monitored environments, for example in server rooms or industrial facilities.

Functions and Equipment in Detail
The AXIS A9910 features 4 Modbus sensor ports, which can be used to connect environmental sensors. These sensors provide data on temperature, humidity, or other environmental parameters, which are transmitted over the network to the central system. Additionally, 4 C-relays are integrated, suitable for both wet and dry contacts. These relays enable control of external devices, such as door openers or alarm sirens. The 8 I/O ports offer monitored inputs, ensuring reliability in system monitoring.

Technology Explained Simply
The module uses Multi-Drop technology, allowing up to 16 such expansion modules to be connected to an AXIS A9210 device. This enables up to 128 inputs and outputs as well as 64 relays to be controlled via a single IP connection. Power is supplied via PoE (Power over Ethernet), eliminating the need for an additional network cable. This reduces installation costs and simplifies cabling, especially in existing installations where additional cable routing is cumbersome.

Compatibility and Accessories
The AXIS A9910 is specifically designed for use with AXIS A9210 devices. It can be combined with various accessories to facilitate installation. These include, for example, the TA9901 Strain Relief 5er Pack, the TA9001 Wall Mount 10er Pack, the TA1901 DIN-Rail-Clip 10er Pack, and the TA1902 Connector Kit 10er Pack. These mounting and connection components support professional installation in the operational environment.

Installation and Mounting
Installation is performed via a PoE cable, which handles both data transmission and power supply. Connection to the AXIS A9210 is achieved via Multi-Drop technology, allowing multiple modules to be connected in a chain. Mounting can be done on walls, in enclosures, or on DIN rails, depending on the accessories used. The monitored inputs ensure reliable status monitoring of connected devices.

Advantages in Operation
Using the AXIS A9910 reduces the number of required network cables and simplifies the system architecture. Central control via an AXIS A9210 device enables efficient monitoring and control of many I/O functions from a single point. The integration of environmental sensors via Modbus sensor ports extends functionality for intelligent monitoring systems. PoE technology minimizes installation costs and cabling complexity.

General
Number of Modbus sensor ports	4
Number of C-relays	4
Number of I/O ports	8
Relay type	wet or dry
Supported I/Os	128
Supported relays	64
Number of connectable modules	16
Current supply	PoE
Technology	Multi-Drop
Inputs	monitored

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