NORD Drivesystems BU0200 - Manual (Page 95)

SK 200E Manual for frequency inverters
94 Subject to technical alterations BU 0200 GB-4411
3.4.7 Electronic brake rectifier, SK CU4-MBR
The electronic brake rectifier SK CU4-MBR is used to control electromechanical brakes with a coil voltage of
180V DC and 205V DC and sizes 5Nm to 150Nm via the frequency inverter (primarily SK 2x0E) or its ac-
cessories (SK xU4-IOE). Monitoring of the current in the brake coil is integrated into the SK CU4-MBR.
• Mains voltage 230V~ and 400V~
• +24V control voltage
• 1x Digital input (control)
• 1x Digital output (feedback)
• Brake connection (DC)
• Max. permissible continuous current 0.5A
• Interference suppression class C2
• Permissible cycle time (1 switching cycle =1xON/1xOFF):
5…100Nm brake: ≥ 0.5s, 150Nm brake: ≥ 1,0 s
The terminal bar of the customer unit SK CU4-PBR- … is divided into three potential levels.
According to the mains voltage, the mains cable must be connected to L1
E
(380V~ … 500V~) or. L1
B
(200V~ … 275V~) and L2/N. The brake connection is made to Terminals 79/80. Assignment of the brakes is
made according to the following table. The module must be supplied with 24V
DC
. Control is via Terminal C5
by means of a digital output of the frequency inverter which is parameterised to the function {1} "External
brake". Feedback of the operating status of the brake (current/no current supplied to the brake) is via
Terminal B5 of the module.
Brake coil voltage Mains voltage Contact No.
205V
DC
230V
AC
L1
B
+ N/L2
180V
DC
400V
AC
L1
E
+ N/L2
205V
DC
460V
AC
or 480V
AC
L1
E
+ N/L2
L
2
/N
L
2
/N
L1
B
L1
B
L1
E
L1
E
79
80
B5
C5
40
44
L1 380…500V~
L2 / N
Mains voltage
Connection of the 24V power
supply from the SK 2x0E
Connection of DC brake coil
Potential level: 24V DC
Potential level: = Brake
24V
GND / 0V
Connection to the terminal bar
of the SK CU4-MBR- …
DIN
MB+
MB-
(Select connection according to voltage)
…
1
40
44
SK CU4- SK 2x0E-
Digital control In the SK CU4 via
DO from the SK 2x0E
DO Feedback of operating status of the
brake from the DO of SK CU4
L1 200…275V~
Potential level: = Brake
Potential level: ~ Mains
Similar to illustration