Procedural functions of press brakes
© Siemens AG 2003 All Rights Reserved
7-62 SIMOTION Safety Unit (AP) - Edition 06.2003
7.7.2 Multiple operator control with foot switch
Inputs:
UPPER POINT MUTE POINT END
STROKE
EMERGENCY OFF switch
Access protection E1
Access protection E2
Operating mode 4
Foot NO (1)
Foot NC (1)
Foot NO (2)
Foot NC (2)
'DOWN' request
'Fast
downwards movement'
request
Outputs:
'DOWN' enable
Valve 1 (slow)
Press safety valve
Valve 2 (fast)
Emergency off output signal
Figure 7-12 Example for multiple operators with foot switch
For this example, it is assumed that two foot switches and an access protection
(dual-channel E1/E2) have been parameterized for mode 4. The valves are
controlled via variant 2.
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