7
Duty Cycle.
The Formula used to determine duty cycle is:
Run me
x 100 = Duty cycle
Run me + rest me
Working example 1: (Low duty cycle)
Run me: 12 seconds.
Rest me: 36 seconds.
12 ÷ 48 x 100 = 25
Thus the duty cycle in example 1 is said to be 25%
Working example 2: (High duty cycle)
Run me: 12 seconds.
Rest me: 1 second.
12 ÷ 13 x 100 = 92.3
Thus the duty cycle in example 2 is said to be 92.3%
The above examples do not factor in resistance and gate mass. These two elements contribute greatly to the amount of heat generated in your gate
automa on system.
Below are the maximum allowed duty cycles based on the gate mass and rolling resistance for the ET motor models. These are calculated to conform
to the standards set out in the SANS 60335-95-1:2011 safety code.
Duty cycle capabili es guideline of the ET Drive series motor models:
Model
Gate Mass
Star ng resistance
Rolling resistance
Max Duty Cycle
Drive 300
≤ 300kg
≤ 30kgf
≤ 24 kgf
25%
Where to posi on the gate motor.
Liquid ingress:
The ET Drive series motor models all carry an ingress protec on ra ng of IPX4. This means they are protected from splashing water. They are not
water ght as there are sensi ve electronic and electrical circuits that require uninhibited airfl ow to remain cool and dry.
When deciding on an installa on posi on, be aware of water collec on points around and near the desired moun ng posi on of the motor unit. If
the water does not fl ow away quickly enough, it can seep into the system and cause expensive and possibly hazardous damage. Always install the unit
higher than the highest level that any water fl owing past the motor unit can reach.
Physical protec on:
Whenever possible, always install the gate motor on the opposite side of the gate’s guide/emergency post, to the driveway itself. This way it is out of
the path of the motor vehicles as they pass through the entrance/exit.
