Connecting An External Braking Resistor - Siemens SIMATIC MICRO-DRIVE Equipment Manual

Connecting

3.5 Connecting an external braking resistor

3.5 Connecting an external braking resistor
Connecting an external braking resistor
Damage to braking resistor - Risk of fire!
You must implement fire prevention measures for the external braking resistor (e.g. fire
protection housing, temperature fuse). The externally connected braking resistor cannot
drop below a value of 2.25 ohms, including all tolerances.
Note
To enable sufficient braking power in all dynamic operating states, a resistance value
<8 ohms is recommended.
The figure below shows the connection of an external braking resistor to interface X5050
(and X4060):
①
2L+
2DIx
Figure 3-5
28
WARNING
Basic insulation
Supply voltage
Digital input
Connection of external braking resistor (example)
4R+, 4R- Connection for external braking resistor
R External braking resistor
Equipment Manual, 03/2021, A5E50502703-AA
PDC100(F)