Configuring The Safety Function - WEG CFW900 Serie Manual De Seguridad

Commissioning
ATTENTION!
Whenever the safety function is reconfigured, it is mandatory to carry out an
operation verification test.
NOTE!
Simultaneous activation of the safety inputs means that the time between the
activation or deactivation of the inputs must be less than 1 s. This time is also
known as discrepancy time. If the discrepancy time exceeds 1 s, fault F160 will
be displayed on the HMI. To clean this fault, it is necessary to set both safety
inputs (STO1 and STO2) to the same logical state, and then de-energize and
re-energize CFW900.
NOTE!
Test pulses present in OSSD outputs are tolerated and do not activate the safety
functions, provided that they respect the following specifications:
Pulse duration: < 1 ms.
„
Interval between pulses on the same channel: > 8 ms.
„
Interval between pulses on different channels: > 4 ms.
„

4.2 CONFIGURING THE SAFETY FUNCTION

The controlled delay time of the SS1-t safety function is used to select which safety function
will be configured in the STO90 safety functions board. If the delay time is programmed with
0 s, then STO will be selected; on the other hand, values from 1 s to 999 s will configure the
SS1-t safety function.
NOTE!
The factory default value for the controlled delay time is 0 s, i.e. CFW900 comes
from factory pre-configured with the STO safety function.
The delay time is programmed by setting the DIP switches S2 and following the step-by-step
procedure presented on the HMI, as detailed below.
1) Perform the start-up sequence described in
2) Make sure CFW900 is in the safe state, i.e. the safety inputs are deactivated, and "STO" is
displayed on the upper left corner of the HMI.
20 | CFW900
Section 4.1 START-UP on page
Figure 4.1: STO state indication on the HMI
19.