User's Manual

Remtron
®
Engineered Systems
User Manual
27
9M02-9028-A021-EN
Version 4.0
Figure 11: 21R22 Status LED Indicators – Transmitter ON
6.6 Installation Procedure – SAFE-T-RANGE (21R22CR)
Cattron's ‘Safe-T-Range™’ is the latest advancement in wireless crane controls. ‘Safe-T-Range™’ keeps the
operator within a predetermined distance from the crane, thus increasing safety in the workplace. Using an
advanced panel antenna design along with programmable logic, a ‘Safe-T-Range™’-equipped receiver draws an
electronic boundary around the crane and operator. The system then safely stops and inhibits selected functions
when the operator steps outside the boundary. This is done without shutting down the main contactor line.
6.6.1 21R22CR Power/Control Wiring
Perform the procedure for installing the 21R22 Power/Control Wiring.
6.6.2 21R22CR Antenna Installation
The 21R22CR Receiver must be set up correctly using a special antenna and circuitry for the controlled
range function to operate properly. Use the following procedure as a supplement to the 21R22 Installation
Procedure.
The antenna for the 21R22CR has a specially shaped pattern that provides a sharp drop-off in signal strength
when the operator moves away from the antenna. The antenna has a shaped beam much like a broad flood lamp,
as shown in the following illustration.