Connection Of A Brake Unit - Lenze 9300 Operating Instructions Manual

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4.2.7.3
•
Observe the max. permissible motor cable length:
Type f = 8 kHz
chop
9321/9322 up to 50 m
9323 - 9332 up to 50 m
The max. permissible motor cable length of types 9323 - 9332 will be reduced if the motor cable has more than a single
core.
•
Two parallel single cores: L
•
Three parallel single cores: L
•
Connect motor cables to the screw terminals U, V, W.
– Observe correct pole connection.
– Maximum motor cable length: 50 m.
– Max. permissible cable cross-sections and screw tightening torques:
Max. permissible cable
cross-sections
Power
connections
Type
2 1)
9321 - 9326 4 mm
2 2)
9327 - 9329 25 mm
2 2)
9330 - 9331 95 mm
2 2)
9332 120 mm
1) 2
with pin cable lug: 6 mm
2
with wire crimp cap: 4 mm
2)
with ring cable lug: Cross-section is limited only by the cable duct in the housing
Tip!
Switching on the motor side of the controller is permitted only for emergency switch-off.

Connection of a brake unit

•
When connecting a brake unit (brake module with internal brake resistor or brake chopper
with external brake resistor) observe the corresponding Operating Instructions in all cases.
Stop!
•
Design the circuit so that, if the temperature monitoring of the brake unit is activated,
– the controllers are inhibited (X5/28 = LOW).
– the mains is disconnected.
•
Examples:
– Chapter 4.3, "Installation of a CE-typical drive system".
– Fig. 4-9, "Decentralized supply for DC-bus connection of several drives".
amb = 400 V (+ 10%)
r
f = 16 kHz
chop
up to 45 m
up to 50 m
= 17 m
max
= 9 m
max
T1, T2 U, V, W
0.5 ... 0.6 Nm
(4.4 ... 5.3 lb-in)
5 Nm (44 lb-in)
2
1.5 mm 1.5 mm
15 Nm (132 lb-in)
30 Nm (264 lb-in)
BA9300POS EN 2.3
Installation
amb = 480 V (+ 10%)
r
f = 8 kHz f
chop chop
up to 50 m
up to 50 m
Tightening torques for terminals
Screen/
PE connection
Strain relief
3.4 Nm
(30 lb-in)
M4: 1.7 Nm (15 lb-in) M4 1 7 N (15 lb i )
M5: 3.4 Nm (30 lb-in) M5: 3 4 Nm (30 lb in)
^
( 4-34)
^
( 4-18)
= 16 kHz
up to 25 m
up to 50 m
T1, T2
0.5 ... 0.6 Nm 0 5 0 6 N
(4.4...5.3 lb-in) (4 4 5 3 lb in)
4-17