Safety Edge System Owner manual

Each Profile uses a combination of non-conductive rubber and a flexible wire cored conductive rubber,

bonded together to form a variety of energy absorbing Profiles. The Profile has no rigid internal parts

which can “break through” or cause fatigue failures after prolonged use. The maximum operating

voltage of the Profile is 12 VDC so no dangerous voltage is exposed if the Profile is accidentally cut or

sheared. The copper wire core throughout the length of the Profile ensures that there is no significant

build up of resistance over long lengths.

The circuit through the Profile is monitored by the Safedge control unit which, when a 6KΩ resistance

is present (i.e. normal run conditions), produces a signal to the machine control circuit.

When the Profile is pressed, from any direction through 90° as shown above, the top conductive

rubber strip compresses and touches the middle conductive rubber so creating a “short circuit” and the

overall resistance drops. This is monitored by the control unit which initiates the machine shutdown.

Any single fault in the Profile or the wiring connections to the Profile will be detected and the control

unit outputs will go to a safe (OFF) state.

Individual Profiles connect to each other by wires, axial connectors or standard 90° connectors. The

Profiles are connected to the control units by two wires. The control unit has fully cross monitored

safety relays and it is possible to configure the unit so that an external contactor fault will be detected.

Compliance with the requirements of EN 954-1 Category 3 and pr EN 1760-2 is achieved for the

control unit regarding electrical faults and can be met for the associated part of the machine control

system. Compliance with the requirements of EN 954-1 Category 1 is achieved for the Profile.

The Safedge system complies with the requirements of the European EMC Directive. Normal operation

under interference conditions likely in industrial environments is assured as it has been tested and certified.

NOTE:- Special measures may be required in the presence of abnormally high levels of EMI e.g. near

to welding or induction heating equipment or near to radio transmitters / transceivers.

Conductive

Rubber

Non Conductive Rubber

Flexible Wire

Cores

Flexible copper

cores send the

signal to the

Evaluator

90°

45°

'Contact'

Zone

5 22

Record of Routine Inspection And Test

(see section 6.2.2 and 6.2.3)

Date Inspected By Comments