SEW-Eurodrive MOVIDRIVE MDA Series User Manual

9
Functional safety
Safety Conditions
Operating Instructions – MOVIDRIVE
®
modular
255
9.3.2 Requirements on the installation
• The components must be protected against conductive dirt, e.g. by installing them
in a control cabinet with degree of protection IP54 according to IEC60529.
If conductive dirt can be excluded at the installation site, a control cabinet with
lower degree of protection is permitted under observance of the applicable stand-
ards, e.g. EN60204‑1.
The same applies to temporary condensation, e.g. due to rapid changes of the am-
bient temperature.
• The wiring technology used must comply with the standard EN60204-1.
• The STO control cables must be routed according to EMC guidelines and as fol-
lows:
– Inside an electrical installation space: Individual cores can be routed.
– Adhere to the regulations in force for the application.
– The sinking and sourcing cables from the external safety device to the axis
must be routed right next to each other with a cable length of ≤30m.
– The sinking and sourcing cables from the external safety device to the axis
must have the same cable length. A difference in length ≤ 3% of the two cables
is permitted.
– The STO control cable must be routed separately to the power lines of the
drive.
• The STO function does not detect short circuits or interference voltage in the sup-
ply line. This is why you must make sure that:
– No parasitic voltages can occur in the STO control cables.
or
– The external safety controller can detect a crossfault from an external potential
to the STO control lines.
• Observe the values specified for safety components when designing the safety cir-
cuits.
• The STO signal (F_STO_P1, F_STO_P2, and F_STO_M) may not be used for
feedback.
• For safety controller/safety relays, you must only use grounded voltage sources
with protective electrical separation (PELV) according to EN 61131-2 and
EN60204-1.
• If several voltage sources are used, each voltage source must be connected to a
PE system.
• When planning the installation, observe the technical data of the application in-
verter.
• Do not use the 24-V-STO_Out of the application inverter for safety-related applica-
tions. Voltage is only permitted to supply the connection for safe disconnection X6
with plugged jumper plug.
• For safety-related applications with the application inverter, the jumper plug at the
STO input X6 must be removed.
24748536/EN – 11/2017

SEW-Eurodrive MOVIDRIVE MDA Series Specifications

General

Brand	SEW-Eurodrive
Model	MOVIDRIVE MDA Series
Category	Control Unit
Language	English