10.1.2 Recommended Safety System
For optimum safety, ease of use and test speed, Voltech recommends the use of a safety light curtain with the AT3600 and other Voltech products that can generate dangerous voltages during routine production testing. This provides a ‘light curtain’ of infrared beams positioned in front of the tester.
Once the operator has placed a transformer on the test fixture, and removed his or her hand, the light curtain can signal that the situation is safe within a few tens of milliseconds. However, if the operator tries to touch the transformer during program execution, the safety system will open the safety interlocks (also within a few tens of milliseconds), so that the tests with dangerously high voltages will not be run.
The Safety Interlock Cable is an accessory that makes connection between the AT3600 and a safety light curtain as safe and easy as possible. The cable has been optimised for use with the ‘Banner’ safety light curtain described below, but safety light curtains from other manufacturers may also be suitable.
To construct a complete safety system you will need:
- Voltech Safety Interlock Cable
(See next section)
- Banner ‘Micro-Screen’ safety light curtain
- 1 off USCD-1T2 Metal Box Controller
- 1 off USE2424YI Yellow Emitter 610mm high with 150mm to 9m range.
- 1 off USR2424YI Yellow Receiver 610mm high with 150mm to 9m range.
- Methods to restrict access to the back of the working area
NOTE: The Banner part numbers were correct in 2004. You are strongly advised to consult with your safety system supplier before making purchase decisions. Similar safety systems are available from many other manufacturers and may be suitable.