SEW MDR60A, Руководство по эксплуатации

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Operating Instructions – MOVIDRIVE® MDR60A/61B
4
Installation notes
Installation (MDR60A0150/0370/0750 and MDR61B1600/2500)
• Not permitted : Mounting on vertical surfaces when the connection terminals are at
the top.
4.1.8 Connection of braking resistors
• Use two tightly twisted leads or a 2-core shielded power cable . Cable cross sec-
tion according to trip current I
F
of F16. The rated voltage of the cable must amount
to at least V
0
/V = 300 V / 500 V (in accordance with DIN VDE 0298).
• Protect the braking resistor (except for BW90-P52B) using a bimetallic relay ( → wir-
ing diagram for basic unit, power section and brake). Set the trip current according
to the technical data of the braking resistor . SEW-EURODRIVE recommends
using an overcurrent relay from trip class 10 or 10A in accordance with EN 60947-4-
1.
• For braking resistors of the BW...-T / BW...-P series, the integrated temperature
switch/overcurrent relay can be connected using a 2-core shielded cable as an
alternative to a bimetallic relay.
• Flat-type braking resistors have internal thermal overload protection (fuse which
cannot be replaced). Install the flat-type braking resistors together with the appro-
priate touch guard .
4.1.9 Operating braking resistors
• The connection leads to the braking resistors carry a high pulsed DC voltage during
rated operation.
WARNING
The surfaces of the braking resistors get very hot when the braking resistors are
loaded with P
N
.
Risk of burns and fire.
• Choose a suitable installation location. Braking resistors are usually mounted on
top of the control cabinet.
• Do not touch the braking resistors.