Table of Contents
Advertisement
⇒ The maximum time between the selection of the transition function
"Safe stop 1 (SS1)" and activating of the safety function Safe torque off (STO)
depends on the transition progress! The maximum time can be prolonged by
the time parameterized in P‑0‑3263.0.7 if an error occurs. In case of a config-
ured F7 error reaction ="Torque enable" (P‑0‑3263.0.1) or direct switching to
the F8 error reaction (F3 reaction=F7 reaction in P‑0‑3263.0.1), the time is not
prolonged.
If the SMD acknowledges the transition process without error, the transition
by the transition function SS1 is completed with the selection of the safety
function "Safe torque off".
Fig. 31: Monitoring function 2a: "SS1, standstill-prioritized with NC-controlled
transition (with trend monitoring)"
*1)
P‑0‑3255
P‑0‑3280.0.2 SMO: Max. Transition time normal oper. to safe standstill
P‑0‑3280.0.3 SMO: Max. Transition time between safe operating states
Monitoring function 2b: "SS1, standstill-prioritized with NC-controlled transi-
tion (based on actual velocity)"
When the monitoring function 2b "[SS1, standstill-prioritized with NC-con-
trolled transition (based on actual velocity)]" has been configured, the axis is
decelerated in an NC-controlled way when SS1 is selected. That is to say the
higher-level control unit decelerates the drive using the command value system
and removes drive enable at the end of the deceleration process.
To monitor the deceleration process, the
(SMD)
detects an exceeded velocity, the error "F7051 Safely-monitored deceleration
" is reported and the drive is set to standstill according to the parameterized
error reaction (P‑0‑3263.0.1) (see
R911404905, Edition 02
SMD executed on the basis of the actual velocity
SMO: Velocity threshold for Safe standstill
is called by the transition function "Safe stop 1 (SS1)". If the SMD
ctrlX SAFETY "SafeMotion"
Transition functions
⮫ Safely-monitored deceleration
⮫ Error reaction and escalation
95 / 302
strategy).
Bosch Rexroth AG
Advertisement
Table of Contents
