ABB ACS150 - Mandatory Circuit Protection; Parameter Set-Up

Technical data
127
Mandatory circuit protection
The following setup is essential for safety – it interrupts the main supply in fault
situations involving chopper shorts:
• Equip the drive with a main contactor.
• Wire the contactor so that it opens if the resistor thermal switch opens (an
overheated resistor opens the contactor).
Below is a simple wiring diagram example.
Parameter set-up
To enable resistor braking, switch off the drive’s overvoltage control by setting
parameter 2005 to 0 (DISABLE).
ACS150
U1 V1 W1
L1 L2 L3
1
2
3
4
5
6
K1
Q
Thermal switch of the resistor
Fuses