Siemens SINUMERIK 840D Description Of Functions page 446

8 Application examples
8.2 Two-channel brake control with SI (SPL)
Connecting these signals to $A_OUTSEP (DB18 signal)
Signals that are logically combined after $A_OUTSEP to control the PLC output
no longer influence the SPL crosswise data comparison. Additional signals can
include the following:
•
•
Connecting these signals to the PLC output
Example
NCK part
(1) Machine data
MD 36990[0]
(2) SPL
DEFINE STOP_A_B_aktiv
DEFINE P_BREMSE_X1
DEFINE NOT_HALT_nicht_aktiv
IDS=1 DO P_BREMSE_X1 = NOT STOP_A_B_aktiv AND $VA_DPE[X1]
PLC part
U
=
UN DB18.DBX56.0
UN DB31.DBX108.2
U
U
U
=
U
U
.
.
= A2.0
8-446
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
User signals, e.g. "test stop active"
Status signal "position controller active", axis DB.DBX 61.6
for faster application of the brake
SAFE_ACT_STOP_OUTPUT = 04010101 (for drive X1)
AND EMERGENCA_STOP_not_active
DB31.DBX111.4 // STOP A/B active
DB18.DBX56.0 // $A_INSIP[1]
DB31.DBX93.7 // Pulses enabled
DB31.DBX61.6 // Speed controller active
DB18.DBX70.0 // EMERGENCY STOP not active
DB18.DBX46.0
DB18.DBX46.0 // $A_OUTSE[1]
DB31.DBX61.5 // Position controller active – from here
onwards, no longer any effect on SPL
crosswise data comparison
// PLC output, relay module (M voltage)
AS $A_INSI[1]
AS $A_OUTSE[1]
AS $A_MARKERSI[1]
// $A_INSIP[1]
// SGA pulses not safely cancelled
// $A_OUTSEP[1]
© Siemens AG 2003 All Rights Reserved
11.03