Siemens SIMATIC MICRO-DRIVE PDC600 - Connecting an External Braking Resistor

3.5 Connecting an external braking resistor
Connecting an external braking resistor
WARNING
Damage to braking resistor - Risk of 󹪝re!
You must implement 󹪝re prevention measures for the external braking resistor (e.g. 󹪝re
protection housing, temperature fuse). The resistance of the externally connectable braking
resistor must be at least 3ohms.
Note
The connection terminal (X5051) for an external braking resistor is monitored by the drive
controller. In the event of a corresponding overload, warning A61059.22 (warning threshold I2t
monitoring connection of external braking resistor reached) is reported. If the limit value is
exceeded, the system is switched o󹪜 with the alarm message F61059.18 (limit I2t monitoring
connection of external braking resistor exceeded).
The 󹪝gure below shows the connection of an external braking resistor to interface X5051
(and X4060):





/
',
5
5
5
;
;
˽
1
① Basic insulation 4R+, 4R- Connection for external braking resistor
xL+ Supply voltage R External braking resistor
2DIx Digital input  
Figure3-5 Connection of external braking resistor (example)
Connecting
3.5Connecting an external braking resistor
PDC600(F)
28 Equipment Manual, 12/2023, A5E50502703-AB