Heras HMD Basic, User Manual

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EN – Translation of the original user manual - 2.0 | 2019 17
4.2 SAFETY EDGES
Electrically driven Heras gates are protected by safety edges. The type of device
and the speed of movement depend on the motor control unit used. If the safety
device touches an obstacle, the gate will immediately stop and reverse.
Dependent on the device, the gate will restart. The safety edges have been fitted
to the stationary and/or moving part or parts of the gate. They are not required
for hold-to-run-control. These strips serve as safety components. The number of
safety edges depends on the situation.
Before the gate is moved, the control system checks the status of the safety
edges. If one of the safety edges is faulty, the gate can only be opened and closed
in hold-to-run-mode. In that case, consult a qualified engineer.
See the chapter 1.2 “SERVICE /MAINTENANCE”
4.3 PHOTOCELLS
Photocells detect whether there are obstacles in the path taken by the gate. If an
obstacle is detected, the gate will stop immediately and slide open to its original
starting point (OPEN or PARTIALLY OPEN). Dependent on the device, the gate will
restart. The photocell is only active when the gate is being closed. Gates can be
fitted with multiple photocells.
4.4 ACCESSOIRES
Loop detection (optional) 4.4.1
A detection loop is an induction loop embedded in the road surface that, with the
assistance of electronics, can detect a vehicle. When the loop detects a vehicle,
the gate will open and/or stay open. Detection loops do not detect people.
Traffic light (optional) 4.4.2
Red/green signal lights that indicate the open/closed position statuses. People are
only allowed to pass through the gate opening when the green light is on.
Flash light (optional*) 4.4.3
A flashing beacon to ensure extra attention before and while the gate is