Pw 21X Or Pw 1X0(B) Braking Resistor For Ue 2Xx Compact Inverter - HEIDENHAIN TNC 410 M Technical Manual

5.3.4 PW 21x or PW 1x0(B) Braking Resistor for UE 2xx Compact Inverter

Cross section
X89: Braking
resistor
April 2007
An external braking resistor must be connected to the UE 230 and UE 24x
compact inverters, as these inverters are not equipped with internal braking
resistors.
An external braking resistor can also be connected to the UE 210 and UE 212
compact inverters instead of the internal braking resistor. This becomes
necessary if the internal braking resistor is no longer able to absorb all of the
braking energy, because it is too much, or if the braking resistor needs to be
mounted outside the electrical cabinet.
Either one PW x10(B) or two PW 120 switched in series can be connected to
all UE 2xx compact inverters.
The braking resistor is switched on when the inverter voltage U
700 V and is switched off again as soon as it falls below 670 V.
Note
If no braking resistor is connected, the inverter voltage U
at U > 760 V all power stages will be switched off (LED for U
Z
lights up)!
The following cross section is required for connecting the braking resistor:
Braking resistor
1 x PW 21x
1 x PW 110(B)
2 x PW 120 in series
Pin layout on the UE 21x:
Connecting Assignment
terminal X89
UE 21x
1 +U
Z
2 Internal braking
resistor
3 Switch to –U
Pin layout on UE 230 and UE 24x:
Connecting Assignment
terminal X89
UE 230
UE 24x
1 +U
Z
2 Switch against
–U
Z
Connecting the UE 2xx Compact Inverter
Cross section
2
1.5 mm
2
1.5 mm
2
4 mm
Internal braking
resistor
Jumper
Do not assign
Z
PW 21x
RB1
RB2
exceeds
Z
can increase and
Z
>>
DC-LINK
PW 21x PW 1x0(B);
connecting
terminal
X1
RB1 1
Not Do not
assign assign
RB2 2
PW 1x0(B);
connecting
terminal X1
1
2
5 – 45