Installation
3.3.4
”
Safe standstill
”
function
The
“
Safe standstill
“
function is activated by pressing the key
“
S1
“
(OFF):
•
A Quick Stop (QSP) is set immediately via terminals E1 and E2 (X5) of the controller.
•
The motor is braked to standstill by the controller with t
QSP
along the QSP ramp.
•
If the controller sends the signal
“
n = 0
”
(terminal A1, X5) to indicate that the motor has been
stopped, the PLC will disable the controller (terminal 28, X5) and set a delayed pulse inhibit
via K
SR
(terminal 34, X11).
The external pulse inhibit of the controller (safety relay K
SR
) ensures that the motor cannot start
unexpectedly if the safety doors are open.
3.3.5
“
Emergency off
”
function
If
“
S3
”
(EMERGENCY OFF) is pressed, the drive is braked to a controlled standstill according to stop
category 1 of EN 60204-1:
•
A Quick Stop (QSP) is set immediately via terminals E1 and E2 (X5) of the controller.
•
The controller brakes the motor to a controlled standstill (t4) within t
QSP.
•
If the controller sends the signal
“
n = 0
”
to indicate that the motor as been stopped, te PLC
will disable the controller (terminal A1, X5) and set a delayed pulse inhibit via K
SR
(terminal 34,
X11).
•
If the feedback contact of K
SR
(K31 - K32, X11) indicates activation of the pulse inhibit, the
PLC deactivates the signal for controller enable (terminal 28, X5), mains contactor (K4) and
motor brake (Y1). The controller power supply is interrupted.
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