Vacon NX User manual - page 29
STO AND SS1 SAFETY FUNCTIONS
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3
3.5.3
Checklist for commissioning the OPT-AF board
The minimum steps required during connecting the Safe Torque Off (STO) or Safe Stop 1 (SS1) safe-
ty functions of the OPT-AF board are shown in the checklist below. For ATEX related issues see the
ATEX section.
Table 3. Checklist for commissioning the STO or SS1 safety functions.
Nr
Step
No
Yes
1
Has a risk assessment of the system been carried out to ensure that
using the OPT-AF board Safe Torque Off (STO) or Safe Stop 1 (SS1) safety
function is safe and according to local regulations?
2
Does the assessment include an examination of whether using external
devices such as a mechanical brake is required?
3
Switch S1
-
Has the switch S1 been chosen according to the required safety
performance target (SIL or PL) set during the risk evaluation?
-
Is the switch S1 required to be lockable or otherwise secured in
the isolating position?
-
Is it ensured that color coding and marking is in accordance with
the intended use?
-
Is the external power supply earth fault and short circuit protected
(EN 60204-1)?
4
Is the reset function edge sensitive?
If a reset function is used with Safe Torque Off (STO) or Safe Stop 1 (SS1) it
must be edge sensitive.
5
The shaft of a permanent magnet motor might in an IGBT fault situation
rotate up to 360 degrees / pole of the motor. Has it been ensured that the
system designed in such a way that the this can be accepted?
6
Have process requirements (including deceleration time) been consid-
ered for correct execution of Safe Stop 1 (SS1) safety function and are the
corresponding settings done according to Chapter ?
7
Is the enclosure class of the control unit, where the OPT-AF board is
installed, at least IP54? According to ISO13849-2 and table D5, PCBs con-
taining safety related functions require a fault exclusion for short-circuit
between two adjacent pads/tracks. This is realized with IP54 enclosure.
8
Have the User's Manual instructions for the specific product, on EMC
compliant cabling been followed?
9
Has the system been designed in such a way that activating (enabling) the
drive through STO inputs will not lead to an unexpected start of the drive?
10
Have only approved units and parts been used?
11
Is the NXP control board VB00761 revision B or newer? (See the sticker
on the NXP control board).
12
Is the NXP system software version NXP00002V179, or newer?
13
Has a routine been set up to ensure that the functionality of the safety
function is being checked at regular intervals?
14
Has this manual been read, understood and followed carefully?