Safety Integrated - Industry - Siemens

Symbol Function Explanation
START Push button (NO) 1: start request
C_REQ_SG Mode switch Switch, which requests "safe speed" (SG) with "1" signal. Normal operation can only be started when
this bit is on "0" signal.
C_SW_FDO
R
Position switch 1: safety door closed
IMPULSE_ Impulse release for See NW3
RELEASE MASTERDRIVES
STOP Push button (NC) 0: stop request
C_NERR_ Error bit for switch-on This bit represents the status on a flip-flop in the F-program which safely switches MASTERDRIVES off
ESTP_FDOR locking
in the event of a failure. C_NERR_ESTP_FDOR=0, if at least one of the following events is true:
• Safety door is opened during normal operation
• Emergency stop push button is pressed
• In operating mode "safe speed" (SG) the actual speed value exceeds a comparison value N_SG.
• in "safe speed" (SG) mode, the actual speed value determined with PROFIBUS and the actual speed
value determined with the ET 200S count module are deviating.
• In operating mode "safe speed" (SG) the drive spins (SSTILL=0), even though no start request is
pending (OUT1=0).
• The readback signals from contactor K2 or option K80 are not pending correctly.
C_EN_SG Enable "safe speed"
(SG)
1: operating mode "safe speed" (SG) active
OUT1 Enable start of Parameter of MASTERDRIVES, controlled by S7-400 (Master-CPU) via PROFIBUS.
MASTERDRIVES) "1" signal means: drive starts.
OUT1=1 for the operating modes
• Normal operation
• Safe speed" (SG)
OUT1=1 requires OUT3=1.
C_OUT1 Enable start of
MASTERDRIVES
Information for the F-CPU
Without the AND logic operation of C_EN_SG with L 254.4
(OUT2) the drive would in operating mode "safe speed" (SG)
not restart after standstill and pulse blocking. Reason: After
pulse blocking MASTERDRIVES resets the Bit OUT2 internally
to "0" signal and goes to "switch-on locking" mode. After
pressing the dead man switch the safety relay of option K80 is
controlled again, which causes MASTERDRIVES to reset the
OUT2 bit to "1" signal. Only now must the start command assign
"1" signal to the OUT1 bit.
Note
After unplugging the PROFIBUS connector from
MASTERDRIVES (during runtime) the drives goes to
standstill. Renewed starting requires pressing not only
acknowledgement (ACK) but also the stop button
(STOP) to reset OUT1 in the Master-CPU.
Functional Example No. AS-FE-I-012-V10-EN 385
Ex. No.
12