HEIDENHAIN TNC 410 M Technical Manual page 310

Connecting Assignment Connecting
terminal X89B
UE 21xB
1 Do not
assign
2 Do not
assign
Temperature
switch
X2: Fan for the
PW 1x0(B) external
braking resistor
5 – 62
Pin layout on UE 21xB for external braking resistor:
terminal X89A
UE 21x B
1
2
Warning
The internal and an external braking resistor must not be operated in
parallel!
Pin layout on UE 230B and UE 24xB:
Connecting Assignment
terminal X89
UE 230B
UE 24xB
1 +U
Z
2 Switch against
–U
Z
The temperature switch is a normally closed contact and is set to protect the
braking resistor from being damaged. It can have a maximum load of 250 V,
5 A. The switch can be connected to a PLC input on the control and evaluated
via the PLC.
Connection:
Connecting terminal on PW 21x
T1
T2
Connecting terminal X3 on the
PW 110B
1
2
Connection:
Connecting terminal X2
+
–
HEIDENHAIN Technical Manual for Inverter Systems and Motors
Assignment PW 21x
+U RB 1
Z
Switch against –U RB 2
Z
PW 21x
RB 1
RB 2
Assignment
1
2
Assignment
1
2
Assignment
+24 V (PLC)
0 V
PW 1x0(B);
connecting
terminal X1
1
2
PW 1x0(B),
connecting
terminal X1
1
2