Nc-Controlled Extended Stop - Siemens SINUMERIK 840D sl Function Manual

R3: Extended stop and retract
9.2 Control-managed ESR - 840D sl only
a resistor module. The operating range of the resistor module (shown highlighted in the
diagram) lies below the critical voltage level.
Note
The pulse power of the resistor module is greater than the infeed power.
Monitoring the intermediate circuit minimum voltage limit
The DC link voltage can be monitored against a limit value that can be parameterized in the
drive:
● p1248 (DC link voltage – lower voltage threshold)
When the limit value is fallen below, the following signal is set in the message word (MELDW)
of the PROFIdrive telegram:
● MELDW.Bit4 = 1 (VDC_min controller is active (Vdc link < p1248))
The signal can be used in the NC to initiate ESR responses.
Figure 9-2
9.2.4

NC-controlled extended stop

Axis-specific parameterization
The NC-controlled extended stopping for a machine axis is activated using machine data:
MD37500 $MA_ESR_REACTION[<axis>] = 22
Channel-specific parameterization
The timing within a channel is parameterized using the following machine data:
● MD21380 $MC_ESR_DELAY_TIME1[<axis>] (delay time ESR axes)
● MD21381 $MC_ESR_DELAY_TIME2[<axis>] (ESR time for interpolatory braking)
460
Monitoring the DC link voltage
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions