ReFlx 45 Collision Avoidance System Instruction Manual
September 2017
Page 6 of 17
1. General System Information
The ReFlx 45 Collision Avoidance System is intended for use with overhead crane bridges and trolleys
and monorails to prevent collisions or to limit the approach of adjacent structures. The system has a
polarized retroreflective sensor that can detect the distance between two objects, such as the bridges of
two overhead cranes or the bridge and a wall. When the sensor detects that the object is closer than the
trip point distance, the form C relay will change state. This is a single sensor system that would most
commonly be used for a single stop command.
Figure 1: ReFlx 45 Collision Avoidance System
Table 1: ReFlx 45 Models
Model Number
Description
REFLX45-AD
Sensor, mounting bracket, and adhesive-backed reflector
REFLX45-DIN
Sensor, mounting bracket, and rail-mounted reflector
REFLX45-ADH
Sensor, hinged mounting bracket, and adhesive-backed reflector
REFLX45-DINH
Sensor, hinged mounting bracket, and rail-mounted reflector
1.2 System Description
1.2.1 Sensor
The ReFlx 45 is a polarized sensor with cross talk protection; because of this feature, there is no
minimum distance necessary between the sensors. The sensing beam on the ReFlx 45 is large, which is
an advantage with skewed runways.
1.2.2 Adjustments
The sensor features four DIP switches to customize the use of any delays or invert the output switching,
and two dials control the delay time and the distance sensitivity. The delay is adjustable up to 10 seconds
while the trip point is adjustable up to 45 ft. The DIP switches are located in the back of the sensor under
the cover, and the dials are located on the top of the sensor.
NOTE: Magnetek recommends leaving the switches and dials at their default positions.
1.2.3 Indicators
Two green LEDs are located on the top of the sensor: one in the front, and the other in the back. They
indicate that the sensor is powered on. Two yellow LEDs next to the power indicators specify the object is
within the sensing range. The yellow LEDs will flash under the following conditions: when the object is