User's Manual

GM550 v1043 FCC-IC.doc Revision 2 33
Anti-Two-Block Switch GS050
WARNING! Keep the anti-two-block switch away from the boom and any connecting
metal structures when welding mounting brackets to the boom. Proximity to welding
may cause permanent damage to the anti-two-block switch and render the anti-two-
block system unsafe.
Important! To ensure reliable radio communication between the anti-two-block switch
and the GS550 display the following conditions must be respected:
• The antenna of the anti-two-block switch must not be in contact with metal.
• The anti-two-block switch antenna must point to the left or to the right of the
boom; it must not point directly to, or away from, the GS550 display.
• The anti-two-block switch antenna must have a clear line of sight to the GS550
display; in most cases this means mounting the sensor on the same side of the
boom as the operator's cab
Step 1. Verify the GS050 anti-two-block switch is programmed to the GS550 display. Switches
shipped with displays are pre-programmed in the factory. Test: if the switch has been
programmed to the display then the display will go in to two-block alarm when the wire
rope of the switch is released. Press Bypass to silence the alarm until the next two-
block event or simulation. If the switch has not been programmed to the display, this
should be done before proceeding to step 2. See How to Add a Sensor to the GS550.
Step 2. Position the sensor mounting bracket.
To ensure that the sensor can pivot securely on the mounting bracket throughout the full range
of boom angle, the mounting bracket must be positioned at a 30° from horizontal with the boom
parallel to the ground and such that the locking pin of the mounting bracket points up. Bolt or
weld securely.
Figure: Mounting bracket footprint and recommended
orientation. All dimensions are in inches.
← Boom Tip