Lenze i950

24 V supply for motor holding brake
Terminal X107: supply voltage brake + / - 24B,
GB
DC supply of X106
External power supply unit
specic
aon
SELV/PELV
Rated input voltage V +24 ± 20 %
Max. Input current 0.37 ... 15 kW A 2.5 Typical: according to the load at X106
22 ... 110 kW A 5.0
Polarity reversal protecon Yes
Suppressor circuit Yes Suppressor diode 30 V, bidireconal
Connecon descripon Motor brake 24 V supply for motor brake
Connecon X106 X107
Connecon type Pluggable Pluggable
Max. cable cr
oss-secon mm² 1.5 2.5
Max. cable cross-secon AWG 16 12
Stripping length mm 9 10
Stripping length in 0.35 0.39
Required tool Screwdriver 0.4 x 2.5 Screwdriver 0.6 x 3.5
Brake resistor c
onnecon
Use intrinsically safe brake resistors to be able to dispense with a separate
s
witch-o device (e.g. a contactor).
Short c
onnecon cables up to 0.5 m Long connecon cables up to max. 5 m
Up to a cable length of 0.5 m, the cable for the brake resistor and that of
the temperature monitoring can be twisted. Doing so reduces problems
due to EMC interference.
The cable of the brake resistor must be shielded.
The maximum length is 5 m.
Twisng is sucient for the temperature monitoring cable.
R
B
RB1 RB2
①
②
< 0.5 m
T1 T2
R
B
RB1 RB2
< 5 m
T1 T2
+
"
"
①
②
① Wiring to the "brake resistor" c
onnecon on the inverter or another component with brake chopper.
② Oponal: Wiring to a control contact that is set to monitor the thermal contact.
If the thermal contact responds, the voltage supply to the inverter must be disconnected (e.g. switch o the control of the mains
contactor).
Electrical ins
tallaon
Brake resistor connecon
153