Safety Shutdown (E-Stop) - Siemens 6RA7086-6KS22 Operating Instructions Manual

05.05
When the control word method is used, the following operating modes are possible (see also Section
8, Sheet G181):
P649 = 9:
P649 ≠ 9:
The "Fixed setpoint" function is input when one or several of the named sources (binectors, bits in
control word) switch to the log. "1" state. In this case, a setpoint selected in parameter P431 is
assigned to each source. If "Fixed setpoint" is input via several sources simultaneously, the
associated setpoints are added (limited to ±200%).
Parameter P432 can be set to define for each possible fixed setpoint source (binector, bit in control
word - logic operation, see block diagram in Section 8) whether or not the ramp-function generator
must be bypassed. When the ramp generator is bypassed, it operates with ramp-up/down times of 0.
Sequence for entering Fixed Setpoint function:
The fixed setpoint is injected instead of the main setpoint.
Sequence for cancellation of Fixed Setpoint function:
When all the possible sources for injecting the fixed setpoint (binectors, bits in control word) have
changed back to log. "0", the setpoint selected in parameter P433 (main setpoint) is switched through
again.
9.8

Safety shutdown (E-Stop)

The task of the E-STOP function is to open the relay contacts (terminals 109/110) for energizing the
main contactor within about 15 ms, independently of semiconductor components and the functional
status of the microprocessor board (basic electronics). If the basic electronics are operating correctly,
the closed-loop control outputs an I = 0 command to de-energize the main contactor. When an E-
STOP command is given, the drive coasts to a standstill.
The E-STOP function can be triggered by one of the following methods:
•
Switch operation:
(switch between terminals XS-105 and XS-106; XS-107 open; XS-108 open)
E-STOP is activated when the switch between terminals XS-105 and XS-106 opens.
•
Pushbutton operation:
(Stop pushbutton with NC contact between terminals XS-107 and XS-106; Reset pushbutton with
NO contact between terminals XS-108 and XS-106; XS-105 open)
Opening an NC contact between terminals XS-106 and XS-107 triggers the E-STOP function and
stores the shutdown operation. Closing an NO contact between terminals XS-106 and XS-108
resets the function.
When the E-STOP function is reset, the drive switches to the "Starting lockout" state. This status
needs to be acknowledged through activation of the "Shutdown" function, e.g. by opening terminal 37.
Note
The E-STOP function is not an EMERGENCY STOP function according to EN 60204-1
SIEMENS AG 6RX1700-0AD76
SIMOREG DC Master Operating Instructions
The control bits in control word 2 are input bit-serially. The binectors selected via P680
and P681 determine bits 4 and 5 of control word 2 (= bits 20 and 21 of complete control
word), and thus input of the "Fixed setpoint" function.
The connector selected via P649 is used as control word 2. Bits 4 and 5 of this word
control the input of "Fixed setpoint".
Function descriptions
9-17