LSI-Robway RCI-1550 LM, Instruction Manual, Page: 25 / 97

ROBWAY recommends that the over-ride key-switch be
switched off (ie, normal position) at all times and the over-
ride key held by the site-supervisor.
6.3. LED Indicators
This section describes that operation of the 5 LED indicators that run along the tope edge of the RCI-
1550 display.
6.3.1.
Override LED
The Override Led is illuminated when the Override key switch is activated. Refer to the section on
the Override key switch for more information. It is also activated during rigging modes.
6.3.2.
Audible Alarm Disabled LED
Illuminated when the in cabin alarm has been cancelled. This occurs when the operator presses
the ACK soft menu button to acknowledge an error. Acknowledging an error effectively cancels the
alarm for that error for a period of time. The amount of time the error will remain acknowledged is
determined by the setting for this option. If the Acknowledge Timeout value is set to zero the error
will not re-sound unless a new error occurs or the same error re-occurs.
6.3.3.
A.T.B. Indicator (anti-two-block or over-hoist)
The RCI-1550 can be supplied with an Anti-Two-Block sensor to prevent two-blocking of the main
and aux winches. When the A.T.B. indicator on the front panel is lit, a two-blocking condition has
occurred and further hoisting may be stopped by activation of the ATB motion cut relay if installed.
An audible alarm also sounds a warning. If the Anti-Two-Block system is not required for the given
application the two wires normally connected to the two-block sensor/s, should be connected
together to avoid erroneous activation of motion cut
(refer to the drawing section of this manual).
If in Over-ride OR Rigging mode.
During some operations (such as Over-Ride and rigging modes) the ATB LED will flash. This
indicates that the ATB circuit has been over-ridden and the RCI unit can not actually sense the
state of the ATB condition.
6.3.4.
Approach to Rated Capacity LED
This is illuminated when 85% of rated capacity is exceeded. This corresponds to the bar graph
being in the amber region.
6.3.5.
100% Capacity Exceeded LED
This is illuminated when 100% rated capacity has been exceeded. This corresponds to the bar
graph being in the red region.
6.3.6.
Motion Cut LED
This illuminated when the RCI-1550 has activated the motion cut outputs and is preventing the
crane from moving into a more hazardous state.