5
GB
The length of the leaf enables the calculation of both the maximum number of cycles per hour and consecutive cycles, while the weight
enables the calculation of the percentage of cycle reduction and the maximum speed allowed. For example, for RUN1800 if the leaf is 10 m
long it will be possible to have 27 cycles/hour and 24 consecutive cycles. However, if the leaf weighs 1300 Kg, they must be reduced by 60
%, resulting in 16 cycles/hour and 14 consecutive cycles. The control unit has a limiting device which prevents the risk of overheating based
on the load of the motor and duration of the cycles. This device triggers when the maximum limit is exceeded. The manoeuvre limiting device
also measures the ambient temperature reducing the number of manoeuvres further when the temperature is particularly high.
The “durability” estimate is shown in chapter 8 “Technical characteristics”, which is the average useful life of the product. The value is strong-
ly influenced by the severity index of the manoeuvre, this being the sum of all factors that contribute to wear. To make this estimate, all sever-
ity indexes in table 4 must be added together, and the result should be used to check estimated durability in the graph.
For example: for RUN1800 on a gate weighing 1300 Kg and 10 m in length, equipped with photocells and other stress related elements
obtains a severity index equal to 45% (20+15+10). From the graph the estimated durability is equal to 200.000 cycles.
Note that the estimated durability is calculated on the basis of design specifications and the results of tests performed on prototypes; as this
is an estimate only, it does not represent any form of guarantee on the effective durability of the product.
RUN1800/ RUN1800P RUN2500/ RUN2500P
Leaf weight (kg) Cycle percentage Cycle percentage
Up to 500 100%
500 ÷ 900 80
900 ÷ 1200 75
1200 ÷ 1500 60
1500 ÷ 1800 50
2000 ÷ 2300 ---
2300 ÷ 2500 ---
Table 3: limits in relation to the weight of the leaf
Severity index % Run Durability in cycles
1800 2500
Leaf weight kg
Up to 500 5
500 ÷ 900 10
900 ÷ 1200 20
1200 ÷ 1500 30
1500 ÷ 1800 40
1800 ÷ 2200 -
2200 ÷ 2500 -
Leaf length m
Up to 6 5
6 ÷ 9 10
9 ÷ 12 15
12 ÷ 15 25
15 ÷ 18 -
Other stress related elements
(to be taken into consideration if the probability
is greater than 10% )
Ambient temperature greater than 40°C or
lower than 0°C or humidity greater than 80%
10
Presence of dust and sand 15
Presence of salinity 20
Photo manoeuvre interruption 10
Stop manoeuvre interruption 20
Thrust active 10
Severity index total%:
Note: if the index of severity exceeds 100% this means that the conditions are outside the limits of acceptability; in this case the use of a larger-sized
model is recommended.
Table 4: durability estimate in relation to the manoeuvre severity index
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