Dangerous movements! Danger to persons
from falling or dropping axes!
WARNING
Observe supplementary standards and guidelines. For European countries:
- DIN EN 954 / 03.97 Safety-related parts of control systems
- Information Sheet for vertical axes
Published by the institution for statutory accident insurance and prevention,
technical committee iron and metal II:
Süddeutsche Metall-Berufsgenossenschaft
Fachausschuss Eisen und Metall II
Wilhelm-Theodor-Römheld-Str. 15
55130 Mainz
USA: See National Electrical Code (NEC), National Electrical Manufacturers'
Association (NEMA), as well as local engineering regulations.
Generally, the following applies: Observe the national regulations!
⇒ The standard equipment motor holding brake is not sufficient to guaran‐
tee personal safety!
⇒ Personnel safety must be achieved using higher-ranking, fail-safe proce‐
dures.
⇒ Block off danger zones with safety fences or safety guards.
⇒ Additionally secure vertical axes against falling or dropping after switch‐
ing off the motor power by, for example:
- Mechanically securing the vertical axes
- Adding an external braking/arrester/clamping mechanism or
- Ensuring sufficient counterbalancing of the vertical axes
- Other appropriate measures
Controlling the holding brake
The control electronics controls the integrated holding brake which excludes
user errors.
Function check
Before commissioning and in operation, check the holding brake for its func‐
tion in periodic intervals (e.g., every 8 hours) with an appropriate check. By
applying a defined torque to the motor, check whether the holding brake has
completely released. For additional information and data, see Functional De‐
scription of firmware (index entry "Motor holding brake → Function check").
Electrically releasing holding brake
The electrically releasing holding brake is used to hold the axes at standstill
and when the drive enable signal is off. When the supply voltage fails and the
drive enable signal has been switched off, the electrically releasing holding
brake will automatically apply.
Risk of damage!
NOTICE
Do not use the holding brake as a service brake for moving axes.
Sizing holding brakes
The physical conditions of holding brakes require consideration of two states.
In addition to normal operation, failures have to be considered. The effective
braking torques are physically different:
DOK-INDRV*-KCU02+KSM02-PR03-EN-P
Bosch Rexroth AG
231/337
Rexroth IndraDrive Mi Drive Systems with KCU02 KSM02, KMS02/03, KMV03, KNK03
Notes on project planning
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
