AJAX SYSTEMS AJ-S-MR-FIBRA - SUPERIOR MULTIRELAY FIBRA

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Superior MultiRelay Fibra is a module to control electrical appliances’ power supply remotely. The device has four relays with electrically isolated dry contacts. The relays can control the power supply of electrical appliances connected to the circuit. To change the states of the relays, use the Ajax apps, create automation scenarios, or press Button. 
The module works as a part of an Ajax system and exchanges data with the hub using the secure Fibra wired communication protocol. 
MultiRelay is a part of the Fibra product line of wired devices. Only accredited Ajax Systems partners can buy, install, and administer Fibra products. 

Operating principle 
MultiRelay is a module to control the power supply of electrical appliances remotely. It is used in a wired or hybrid Ajax system. Each of the four relays must be installed in the electrical circuit gap to control the power supply of electrical appliances connected to this circuit. Each of the four relays is configured and controlled separately. 
MultiRelay operates as a part of the Fibra line. The module connects to any point of the Fibra line. Electrical appliances connected to the relays are powered separately. 
Each relay has potential-free (dry) contacts. Dry contacts are electrically isolated to the relay’s power supply. Thus, this device can be used in low-voltage and household networks, for example, to simulate a button, or a toggle switch, or to control water shut-off valves, electromagnetic locks, irrigation systems, gates, barriers, and other systems. 
The relay operates in bistable or pulse mode. When operating in a bistable mode, the relay changes the contact state, and the connected electrical appliance turns on or off. When operating in a pulse mode, the relay changes the contact state for the required duration — from 1 second to 2 hours. Only PROs or users with admin rights in Ajax apps can select the operating mode in the Ajax apps. 
Superior MultiRelay Fibra also allows integrating electric lock or third-party blocking element to Ajax system. Blocking element is needed to set up system according to the unavoidability principle (German: Zwangsläufigkeit). 
The device has temperature protection. When one of the relays exceeds the permissible temperature, all closed contacts are automatically opened. The switch toggle of the relay that was enabled turns red. The user receives an overheating notification. 
The relay functionality is restored when the temperature drops to the permissible level. After power is restored, the relay contacts return to their previous state. If, after the relay has been switched off due to overheating, the user has changed the state using the switch in the application, the contacts will take this state after the temperature returns to normal. When operating in pulse mode, the relay recovers from overheating in the off state. 

Automation scenarios 
Scenario types with MultiRelay:

1. By alarm.
2. By security mode change.
3. By schedule.
4. By pressing Button.
5. By temperature.
6. By humidity. 
7. By CO₂ concentraton.
8. By touching LightSwitch.

If the device is offline, it will not execute the scenario as it misses the scenario trigger (e.g., during a power outage or when the connection between the hub and device is lost). 
Use case: The automated action is scheduled for 10 a.m., so it must start at 10 a.m. The electrical power goes out at 9:55 a.m. and is restored ten minutes later. The automation scenario won’t start at 10 a.m. and will not start immediately after the power is back on. This scheduled action is missed. 

Fibra data transfer protocol 
The module uses Fibra technology to transmit alarms and events. It is a wired data transfer protocol for fast, reliable two-way communication between the hub and connected devices. 

Sending events to the monitoring station 
The Ajax system transmits alarms to the PRO Desktop monitoring app, as well as to the central monitoring station (CMS) using SurGard (Contact ID), SIA (DC-09), ADEMCO 685, and other protocols. 
MultiRelay can transmit the following events:

1. Tamper alarm and turning off the alarm.
2. Low supply voltage and voltage return to normal values.
3. Loss and restoration of communication between MultiRelay and the hub.
4. Permanent deactivation and activation of the device.
5. One-time deactivation and activation of the device.

When an alarm is received, the CMS operator knows exactly what happened and where to send the rapid response team. The Ajax devices are addressable, meaning that the PRO Desktop app and CMS receive events, device type, assigned name, and location (room, group). The list of transmitted parameters may differ depending on the CMS type and the selected communication protocol.