Safety Control Word 2 (S_Stw2) - Danfoss Vacon OPTEA Operating Manual

VACON® NXP Advanced Safety Options
Operating Guide
Byte Bit Name
4 SSR_ACTIVE
5 –
6 SMS_ACTIVE
7 SBC_REACHED
When the SQS function is executed in the drive: If the SQS-SS1/2 mode is used, the SS1/2 will be indicated by this bit. Depending on the parameter-
1
ization, the SQS-SS1/2 can be different from the standard SS1/2.
If any of the SLS functions is reached, this bit is set to 1.
2
This bit indicates whether there are safety functions active on the Advanced safety option board. This includes safety functions that are not indica-
3
ted in the selected telegram but activated via a digital input. The SSM function is excluded if it is set to "Always active".

7.1.6.7 Safety Control Word 2 (S_STW2)

Compared to Safety Control Word 1, Safety Control Word 2 has two extra bytes, so Standard Telegram 31 can be used with more
safety functions than Standard Telegram 30. With these bytes, it is possible to select between 3 different SLS limits and activate
positive and negative safe direction functions. Byte 3 is identical to Byte 1 of Safety Control Word 1 (S_STW1).
Table 56: Description of Safety Control Word 2 (S_STW2)
Byte Bit Name
0 0 STO
1 SS1
2 SS2
3 –
4 SLS
5 –
6 –
7 INTERNAL_EVENT_ACK
1 0 –
1 SLS_LIMIT_BIT0
2 SLS_LIMIT_BIT1
3 –
4 –
5 –
6 –
7 –
2 0..7 –
3 0 ACK_SAFETY
Danfoss A/S © 2021.06
Description
Safe Speed Range activated
–
Safe Maximum Speed activated
Safe Brake Control output activa-
ted
Description
Safe Torque Off
Safe Stop 1
Safe Stop 2
–
Safe Limited Speed
(1)
–
–
Acknowledge safety fault buf-
fer (1->0 edge)
–
Bit 0 for coding SLS limit
Bit 1 for coding SLS limit
–
–
–
–
–
–
Acknowledge safety function
(0->1 edge)
Signal
SSR Reached
–
SMS Reached
SBC Reached
Signal
STO request
SS1 request
SS2 request
–
SLS request
–
–
Reset
–
See Table 57.
(1)
See Table 57.
(1)
–
–
–
–
–
–
Acknowledgment
AQ319736045637en-000101 / DPD01798 | 119
Safe Fieldbuses
Reference
6.3.4.4 The SSR Signals
–
6.3.3.3 The SMS Signals
6.2.2.4 The STO and SBC Signals
Reference
6.2.2.4 The STO and SBC Signals
6.2.3.5 The SS1 Signals
6.2.4.6 The SS2 and SOS Signals
–
6.3.2.5 The SLS Signals
–
–
6.1.6 Reset of a Safety Function
–
–
–
–
–
–
–
–
–
6.1.5.1 Acknowledgment of a Safe-
ty Function6.1.5.2 Start-up Ac-
knowledgment