
5
Electrical installation
Connecting the brake
Operating Instructions – EDR..71 – 315, EDRN63 – 315
82
5.16.5
Switching equipment
The high current utilization during switching the brake (inductive load) requires suit-
able contactors/switch contacts, to obtain the correct function of the brake.
Depending on brake type and type design, the switch contacts must meet the specific-
ations in the following utilization categories:
•
Switch contacts for the supply voltage at AC voltage operation: AC-3 according to
EN 60947-4-1, or AC-15 according to EN 60947-5-1.
•
Switch contact for the supply voltage at DC voltage operation: Preferably AC-3 or
DC-3 according to EN 60947-4-1. As an alternative, contacts in utilization category
DC-13 according to EN 60947-5-1 are also permitted.
•
Switch contacts for optional separation on DC side: AC-3 according to
EN 60947-4-1.
Observe the specifications on the provided wiring diagram.
Using a semi-conductor relay is not permitted.
5.16.6
Brake controls with functional control input
In addition to the voltage supply, the optional brake controls of the BMK., BMKB. and
BMV. series offer a control input for a DC 24 V signal with which the brakes can be
switched via a PLC.
It is a purely functional input that is not "functionally safe" with respect to safety tech-
nology.
Due to their operating principle, fault states can occur in these devices that lead to un-
intentional ongoing brake release, even if the control voltage has been switched off.
WARNING
Unintentional ongoing brake release due to unrecognized malfunction of the brake
control.
Severe or fatal injuries, e.g. due to falling hoist or extended coasting.
•
Always disconnect all poles of the supply and control voltage for hoists and hoist-
like applications.
•
Ensure that a malfunction of the control input can be detected through additional,
suitable diagnostic measures e.g. by monitoring the braking current to meet high
safety and reliability requirements.
•
Use the BST.. brake control for functional safety applications.
•
If you have any questions regarding the handling of the control input, contact
SEW‑EURODRIVE.
25896334/EN – 06/2019
Содержание EDR200
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