Generic Design Rules
Rule GEN1: Mount the devices of the system in the same enclosure.
The gateway and the associated wireless devices shall be mounted in the same enclosure (plastic or metallic) to have:
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A wireless perimeter protected against the wireless external disturbances (especially for the metallic enclosure)
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A perimeter always with the same wireless propagation behavior (irrespective of the enclosure material)
Rule GEN2: Mount the PowerTag energy sensor downstream the circuit breaker.
If the circuit breaker is top fed, mount the PowerTag energy sensor at the bottom of the circuit breaker. But:
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If the circuit breaker is bottom fed, it is recommended to mount the PowerTag energy sensor on the top of the circuit breaker
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If the circuit breaker is coupled with Residual Current Device Add-on, use PowerTag Flex energy sensor.
The advantage of PowerTag energy sensor downstream circuit breaker is that the voltage loss alarm is generated for each PowerTag energy sensor.
Rule GEN3: Mount the PowerTag energy sensor upstream a contactor, a variable speed drive, or a motor starter.
It is not possible to mount the PowerTag energy sensor downstream a contactor, a variable speed drive, or a motor starter.
Rule GEN4: 3 meters maximum between the gateway and the wireless devices.
To avoid wireless communication disturbances, the gateway and the wireless devices must be mounted with a maximum distance of 3 meters between them.
Rule GEN5: No metallic partition between the gateway and the wireless devices.
To avoid wireless communication disturbances, the gateway and the wireless devices must be mounted without metallic partition between them.
Rule GEN6: Follow the maximum capacity of the system.
For more information on the maximum number of wireless devices per gateway, refer to the below user guides, as applicable:
Rule GEN7: Balance the number of wireless devices between the gateways.
When several gateways are installed in the same panel, balance the PowerTag control modules and other wireless devices between them.
The balancing of these devices is necessary to avoid having a fully loaded gateway and to optimize the wireless communication.
The following figures show examples of balanced and unbalanced wireless devices:
In example 1, the PowerTag energy sensors and PowerTag control modules are balanced between the two gateways.
In example 2 and 3, the PowerTag energy sensors or PowerTag control modules are not balanced between the two gateways.
