Siemens sinumerik 840D sl Function Manual page 362

Detailed description
2.7 Extended stop and retract (ESR)
$AC_ESR_TRIGGER (NC-controlled)
• NC controlled shutdown is activated by corresponding parameterizing of the following
• NC controlled retraction is activated by corresponding parameterizing of the following
signal "$AC_ESR_TRIGGER":
MD37500 $MA_ESR_REACTION = 21
Prerequisite: Enable.
2.7.9 Power failure detection and bridging
Detection
A power failure can be detected if the mains supply monitoring of the connected actuator is
used as an external source via terminal 73 of the E/R module of SIMODRIVE 611D I/RF
module (e.g. external sources: NCU input or terminal box).
Delay
The time delay until the mains supply monitoring relay picks up, is approximately 10 - 15 ms.
After energizing of the relay 1/2 IPO cycle (minimum) to 3 IPO cycles (maximum) elapse.
This results in the time for power failure recognition:
Worst case: approximately 120 ms
Best case: approximately 15 ms
Limits of DC link overvoltage
The intermediate circuit is monitored for the following voltage limits:
142
machine data by setting the control signal "$AC_ESR_TRIGGER":
MD37500 $MA_ESR_REACTION = 22
Prerequisite: Enable.
machine data andPOLF and POLFMASK in the parts program by setting the control
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0