Powering The Control Up And Down - Siemens SINUMERIK 840D Description Of Functions

11.03

2.11 Powering the control up and down

What to remember The safety functions are only available and ready to be activated after the
when powering-up the control system has completely run-up.
control
We recommend that you select the "Safe operating stop" (SBH) function.
!
We recommend a complete forced checking procedure after powering-up (refer
to Chapter 3, "Testing the shutdown paths").
What to remember
when powering-down
the control
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
2 General Information about Integrated Safety Systems
Warning
The safety functions are not active while the control system is running-up.
The operator must remain outside the danger zone during this period.
− The position at which axes with safety functions reach a standstill is
saved in a non-volatile memory when safe operating stop (SBH) is
selected. For axes configured with SE and SN, the position data is used
for an internal position check when the system is powered-up again.
− The following applies when SE/SN is active:
The standstill position is also saved cyclically.
For this reason, the user should only power-down the control when the
axes/spindles with safety functions have stopped moving.
Note
If the axis is moved with the power supply disconnected, then the saved
standstill position no longer matches the current position. For axes with safety
functions SE and SN, when the control is powered-up again, a user
agreement must again be given after the position has been checked.

2.11 Powering the control up and down

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