Vacon Safety Control Word (Vs_Cw) - Danfoss Vacon OPTEA Operating Manual

VACON® NXP Advanced Safety Options
Operating Guide

7.1.6.9 VACON Safety Control Word (VS_CW)

The standard S_STW1 and S_STW2 do not include all safety functions that are supported by the Advanced safety option board.
However, a vendor-specific VACON Safety Control Word provides a full access to the safety functions and some extra features over
fieldbus. The bit value 1 means that the signal is "non-active" and the value 0 means "active". All unused bits must be set to 0. Set-
ting their bit value to 1 will cause a fault.
Table 60: Description of VACON Safety Control Word (VS_CW)
Byte Bit Name/Signal
0 0 STO Request
1 SS1 Request
2 SS2 Request
3 SQS Request
4 SSR Request
5 SLS Request bit0
6 SLS Request bit1
7 –
1 0 –
1 –
2 SSM Request
3 SMS Request
4 –
5..7 –
2–4 0..7 –
5 0 SS1_Ramp_Select
1 SS2_Ramp_Select
2..5 –
6 INTERNAL_EVENT_ACK / Reset
7 ACK_SAFETY / Acknowledgment
The SSM function can be parameterized to be always active. In this case, the selector bit has no function.
1
Only when the safety function is parameterized to use ramp selection from the fieldbus.
2
122 | Danfoss A/S © 2021.06
Description
Safe Torque Off
Safe Stop 1
Safe Stop 2
Safe Quick Stop
Safe Speed Range
Safe Limited Speed. See Table
Safe Limited Speed. See Table
–
–
–
Safe Speed Monitor
(1)
Safe Maximum Speed
–
–
–
Ramp selection (0 = Ramp1, 1 =
Ramp2) for SS1
(2)
Ramp selection (0 = Ramp1, 1 =
Ramp2) for SS2
(2)
–
Acknowledge safety fault buffer (1 -> 0
edge)
Acknowledge safety function (0 -> 1
edge)
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
6.2.5.3 The SQS Signals
6.3.4.4 The SSR Signals
61. 6.3.2.5 The SLS Signals
61. 6.3.2.5 The SLS Signals
–
–
–
6.3.5.4 The SSM Signals
6.3.3.3 The SMS Signals
–
–
–
6.2.3.5 The SS1 Signals
6.2.4.6 The SS2 and SOS Signals
–
6.1.6 Reset of a Safety Function
6.1.5.1 Acknowledgment of a Safety
Function
AQ319736045637en-000101 / DPD01798
Safe Fieldbuses