Bosch Rexroth IndraDrive Series Applications Manual page 60

DOK-INDRV*-SI3-**VRS**-AP06-EN-P
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
Requirements on the command
value input
Selecting the safety function "Safe
Brake Control"
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
for both selection channels. If the time interval is exceeded, the error
message "F3134 Dynamization time interval incorrect" is generated.
To increase the noise immunity, the safety technology tolerates
the failure of a dynamization pulse, when the following 8
dynamization pulses occur within the time window described
above.
The safety technology monitors the sampling ratio of the dynamization pulse,
too. When this is done, the dynamization pause must be at least 90% of a
dynamization period. If the dynamization pause is shorter, the error message
"F8300 Dynamization pulse width incorrect" is generated.
Before selecting the safety function "Safe Brake Control", the
drive system should be decelerated via the command value input
to prevent wear of the brake; drive-controlled deceleration does
not take place!
When the safety function "Safe Brake Control" is selected with drive enable
having been set, the drive generates a diagnostic message, because "Safe
Brake Control" is always activated together with "Safe Torque Off" and the
drive must first be decelerated, before the safety function "Safe Torque Off" is
allowed to be activated.
Up to MPx17V06: The diagnostic message that is output is the warning
"E8027 STO/SBC while drive enabled".
As of MPx17V08: Via the parameter "P-0-0101, Configuration STO/SBC", it is
possible to select whether the drive is to react to the error with the fatal error
"F8027 STO/SBC while drive enabled" or the fatal warning "E8027 STO/SBC
while drive enabled".
The warning is automatically cleared when drive enable is removed, the error
must be cleared by the user.
The diagnostic messages are recorded in "S-0-0375, Diagnostic
numbers list".
DANGER
⇒ When the safety function "Safe Brake Control", and therefore the safety
function "Safe Torque Off", is selected with drive enable having been set, the
drive torque, independent of the diagnostic message which was set, is
immediately disabled, the motor brake is applied and the drive is decelerated
only by means of the motor brake; depending on the motor brake, the
shutdown process can be relatively slow and, above all, is not safe!
The safety function "Safe Brake Control" is alternatively selected via two
channels or via one channel. The selection of the safety function is detected,
when a "0"-signal is detected on both selection inputs. The selection can
alternatively be made by means of active or passive safety units.
See also "Examples of application"
Bosch Rexroth AG
Integrated safety functions
Lethal injury and/or material damage caused
by coasting axes!
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