Accessories 169
Brake resistors
Depending on the application, MicroFlex e150 might require an external brake
resistor to be connected to pins R1 and R2 of connector X1. The brake resistor
dissipates energy during braking to prevent an over-voltage error occurring. See
section Brake (X1) on page 140 for details about choosing the correct resistor.
WARNING! Electrical shock hazard. DC-bus voltages can be present at these
terminals. Use a suitable heat sink (with fan if necessary) to cool the brake
resistor. The brake resistor and heat sink (if present) can reach temperatures in
excess of 80 °C (176 °F).
Brake resistor dimensions:
Part Power
W
Res.
Ω
Dimensions mm (inches)
ABCDEFG
RGJ139 100 39 165
(6.49)
41
(1.61)
22
(0.87)
152
(5.98)
12
(0.47)
10
(0.39)
4.3
(0.17)
RGJ160 100 60 165
(6.49)
41
(1.61)
22
(0.87)
152
(5.98)
12
(0.47)
10
(0.39)
4.3
(0.17)
RGJ260 200 60 165
(6.49)
60
(2.36)
30
(1.18)
146
(5.75)
17
(0.67)
13
(0.51)
5.3
(0.21)
RGJ360 300 60 215
(8.46)
60
(2.36)
30
(1.18)
196
(7.72)
17
(0.67)
13
(0.51)
5.3
(0.21)