Doc ref. :
332190D –
EN
28.04.2014
Page 6 / 49
3 Theory of operation
The receiver (R) is integrated in the machine control unit.
The wireless enabling handle (P) transmits, by radiowave, the trigger operating request (G) and possible commands
generated using the buttons (B).
The receiver (R) enables (or not) operation (F) of the machine (M) and transfers the commands (O) assigned to the
buttons.
The receiver (R) stops operation of the machine in the following cases :
Case 1 - Trigger (G) released or clenched (in the case of the 3-position trigger) on wireless enabling handle (P) during
use ;
During use, the wireless enabling handle transmits a stop command as soon as the user releases or
clenches the trigger.
Safety shutdown following stop request or operator incident.
Case 2 - Radio link (L) interrupted during use ;
During use, the wireless enabling handle operates with a continuous radio link with the receiver. If the link is
interrupted more than 300ms, the receiver automatically stops the system.
Safety shutdown prior to loss of control of the stop function.
Case 3 - Procedure for picking up or setting down wireless enabling handle on charger not observed (C) ;
The wireless enabling handle has been removed from its charger and the trigger has not been activated within
the required period of time.
Safety shutdown subsequent to incorrect use of wireless enabling handle.
Case 4 - A secure access area (Z) has been opened without a prior access request;
The access to the area has been opened without prior request by the user, or following a defined time delay for
opening of the secure area access.
Safety shutdown following detection of intrusion into a secure area.
Case 5 - A wired emergency stop system (A), if used, has been opened ;
The wired emergency stop system(s), connected to the receiver, has been opened.
Safety shutdown of machine subsequent to activation of wired emergency stop system(s).
Case 6 - Detection of a fault (see section : «
Faults communicated by receiver
»
)
> See « Procedures » in section 11.
L
P
C
G
Machine
Z
A
M
R
A : Wired emergency stop
system
B : Control button
C : Charger
F : Operation enabled
G : Trigger
L : Radio link
M : Machine controlled
O : Command
P : Wireless enabling handle
R : Receiver
Z : Protected access area
F
O
B
