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8. TM70
– PITCH & CATCH OPERATION
8.1.- INTRODUCTION
This option allows the operation of one crane by two transmitters, through the selection of
ID codes, which determine the mode of operation. For this application, the SCAN option for
the receivers is required in order to receive transmitters in different channels.
This mode of operation consists of the use of a crane by two different transmitters. The first
transmitter governing the crane gets hold of the crane until it as switched off (in principle
exactly as the First come – First served mode of operation). In the event of pressing the
STOP pushbutton, the other transmitter is switched on and the START order is being
pressed, the second transmitter gets hold of the crane without falling the STOP relays. This
way, users of the same crane with different transmitters can pass each other the crane
without failing the STOP relays. As the START pushbutton must be pressed when
transferring the crane, if the START relay has got a connected Horn, when the transfer is
done an audible sound can be produced.
Pitch & Catch operation is always delicate, given that the receiver is FREE every
time the STOP button is pressed or there is a radio link failure.
