Banner AG4 Series Safety Laser Scanner
Product Manual
P/N 144924 05/2009
49
5.2
Integrating the Scanner into machine control system
The following examples show options for integrating the Scanner into the machine control system.
As soon as the power supply has been connected and a PF is activated, the Scanner is ready for test operations
5.2.1
Downstream safety circuit with start/restart interlock, contactor monitoring, without field pair switchover
WARNING . . . INTERFACING OF BOTH OSSDS
Both of the OSSD (Output Signal Switching Device) outputs must be connected to the machine control so that the machine’s
safety control system interrupts the circuit to the machine primary control element(s), resulting in a non-hazardous condition.
Never wire an intermediate device(s) (e.g., PLC, PES, or PC) that can fail such that there is a loss of the safety stop
function or an unsafe, unintended suspension or defeat of the safety stop function.
WARNING . . . USE OF TRANSIENT SUPPRESSORS
Transient suppressors are recommended. They MUST be installed across the coils of the FSDs or MPCEs. NEVER
install suppressors directly across the contacts of the FSDs or MPCEs. It is possible for suppressors to fail as a
short circuit. If installed directly across the contacts of the FSDs or MPCEs, a short-circuited suppressor will create
an unsafe condition.
WARNING . . .
PROPER WIRING
The generalized wiring configurations shown are provided only to illustrate the importance of proper installation. The
proper wiring of the AG4 to any particular machine is solely the responsibility of the installer and end user.
WARNING . . .
SHOCK HAZARD
Always disconnect power from the Scanner and guarded machine before making changes or replacing or wiring any
devices. Always be careful to avoid electric shock.
Do not exceed OSSD maximum load capacitance specification.
