ABB recommends that you also wire the thermal switch to a digital input of the drive,
and configure the input to cause a fault trip at resistor overtemperature indication.
L1 L2 L3
L1 L2 L3
K1
x +24V
x DIx
OFF
ON
1 3 5
2 4 6
1
2
13
14
3
4
Θ
1
2
3
4
5
Drive input power connection with a main contactor1
Drive2
Main contactor control circuit3
Brake resistor thermal switch4
Digital input. Monitors the brake resistor thermal switch.5
￭ Mechanical installation
All brake resistors must be installed outside the drive. Follow the resistor manufacturer’s
instructions.
￭ Electrical installation
Checking the insulation of the assembly
Follow the instructions given in section Brake resistor assembly for R1…R3 (page 115)
or Brake resistor assembly for R1…R3 (page 165) (North America).
Connection diagram
See section Connection diagram (page 122) (IEC) or Connection diagram (page 172)
(North America).
Connection procedure
See section Grounding shelf (page 127).
342 Resistor braking
To Next Page
Loading...
