5.9 Electrical Connections to the Guarded Machine
Verify that power has been removed from the EZ-SCREEN and the guarded machine. Make the permanent electrical
on page 39 as
required by each individual application.
Lockout/tagout procedures may be required (refer to OSHA 1910.147, ANSI Z244-1, ISO 14118, or the appropriate
standard for controlling hazardous energy). Follow relevant electrical standards and wiring codes, such as the NEC,
NFPA79 or IEC 60204-1.
Supply power and external device monitoring (EDM) should already be connected. The EZ-SCREEN must also have been
aligned and passed the Initial Checkout, as described in
on page 32.
The final connections to be made or verified are:
• OSSD outputs
• FSD interfacing
• MPCE/EDM
• Remote Test
WARNING:
• Risk of electric shock
• Use extreme caution to avoid electrical shock. Serious injury or death could result.
• Always disconnect power from the safety system (for example, device, module, interfacing, etc.),
guarded machine, and/or the machine being controlled before making any connections or
replacing any component. Lockout/tagout procedures might be required. Refer to OSHA
29CFR1910.147, ANSI Z244-1, or the applicable standard for controlling hazardous energy.
• Make no more connections to the device or system than are described in this manual. Electrical
installation and wiring must be made by a Qualified Person
4
and must comply with the applicable
electrical standards and wiring codes, such as the NEC (National Electrical Code), ANSI NFPA79,
or IEC 60204-1, and all applicable local standards and codes.
5.9.1 OSSD Output Connections
Both the Output Signal Switching Device (OSSD) outputs must be connected to the machine control so that the machine's
safety-related control system interrupts the circuit or power to the Machine Primary Control Element(s) (MPCE), resulting in
a non-hazardous condition.
Final Switching Devices (FSDs) typically accomplish this when the OSSDs go to an OFF state.
Refer to the output specifications in the Receiver Specifications and these warnings before making OSSD output
connections and interfacing the EZ-SCREEN to the machine.
WARNING:
• Interfacing both output signal switching devices (OSSD)
• Failure to follow these instructions could result in serious injury or death.
• Unless the same degree of safety is maintained, never wire an intermediate device(s) (PLC, PES,
PC) between the safety module outputs and the master stop control element it switches such
that a failure causes a loss of the safety stop command or the failure allows the safety function to
be suspended, overridden, or defeated.
• Connect both OSSD outputs to the machine control so that the machine’s safety-related control
system interrupts the circuit to the machine primary control element(s), resulting in a non-
hazardous condition.
4
A person who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowledge, training and
experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work.
EZ-SCREEN
®
14/30 mm Safety Light Screen
38
www.bannerengineering.com - Tel: + 1 888 373 6767
