Shadow 8 User Manual 1139300
Installation and Checkout 2-3
The “safety distance,” as shown in Figure 2-1, is the distance away from the pinch point (or
hazardous area) of the press that the Shadow 8 heads must be mounted to allow enough time for
Shadow 8 to react, and the press to stop, before the operator can penetrate the light curtain and
reach the hazard. The “pinch point” is the area of the press where moving parts can cause injury.
ADJUST SAFETY DISTANCE TO COMPENSATE FOR LONGER RESPONSE TIME
Determine which model Shadow 8 safety light curtains you have, and use the correct response
time for your model light curtain, as shown below, in your safety distance calculations. If you are
using the optional Shadow 8 control, add 10 mS to these response times for N/O safety relay
connections, 20 mS for N/C relay connections.
Up to 42 in. 23 mS response time
Up to 85 in. 32 mS response time
Up to 128 in. 41 mS response time
Up to 171 in. 50 mS response time
Up to 202 in. 59 mS response time
Safety depends on your installing your light curtain at the correct safety distance from the
hazardous area.
Failure to comply with these instructions will result in death or serious injury.
USE BRAKE MONITOR TO CHECK STOPPING TIME
Use a brake monitor where a Shadow 8 light curtain is installed to protect operators whose hands
are routinely exposed to a hazardous area, as required by OSHA 1910.217 (c) (3) (5). A brake
monitor continually checks that the machine’s stopping time does not exceed a predetermined limit.
Failure to comply with these instructions will result in death or serious injury.
Figure 2-1. Safety Distance: Distance between Pinch Point and Light Curtain
Pinch point
Distance between
light curtain and
pinch point
One of light curtain's
invisible light beams
Transmitter
Receiver
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