Siemens SINUMERIK 840D sl Function Manual page 45

03.06
The machinery construction OEM must set the time interval for carrying-out the
forced checking procedure to between 0 and 9000 hours depending on the applica-
tion (factory setting: 8 hours). The 9000 hours only apply for the SH/SBC functions
integrated in the drive, that are controlled using the local terminals – i.e. not for
safety-relevant motion monitoring functions according to Chapter 6.
Examples for carrying-out the forced checking procedure:
S When the drives are at a standstill after the system has been powered-up.
S When the protective door is opened.
S In defined cycles (e.g. every 8 hours).
S In the automatic mode (time and event dependent).
Safety-related input signals (SGE)
The safety-relevant input signals act as an interface to the process. These digital
signals are transmitted to the system (two channel) and are used for selecting/de-
selecting safety functions.
Example:
Crosswise data comparison
A cyclic crosswise comparison of the safety-relevant data in the two monitoring
channels is carried-out.
In the event of inconsistencies, the following occurs:
1. Fault F01611 or F30611 (STOP F) is output and the time in p9658 or p9858
initiated.
2. Once the time has elapsed, a further fault (F01600 or F30600 (STOP A)) is out-
put and the pulses are safely cancelled.
The stop response is transferred to the other monitoring channel so that two-chan-
nel stopping can be carried out.
Detailed information on the stop responses, see Section 6.3 "Safe Stops A-F".
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
4.1 General information about SINAMICS Safety Integrated
Selecting/deselecting safe standstill (SH)
Safety Functions Integrated in the Drive
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