2-12 AC Motoring Chassis Dynamometer
2.4.4 Control Cable Connections
There are two control cables that connect between the motor controller and the data acquisition
sensor box system interconnect panel. A third control cable goes to the cooling fan motor drive.
Figure 2-6. Motor Drive Control Connections
1. The 1200A-0270 cable carries the 0-10V variable control voltage from the data acquisition
system to the motor drive. On the ABB drive it connects to the speed reference input as shown
below. The jumper between terminals 2 and 4 tie the reference grounds together. Refer to the
manufacturers installation guide for detailed information.
Figure 2-7. 1200A-0270 Motor Drive Cable Connections
Terminal #
Wire Color
Function
X21-2
Black
Ground
X21-3
Red
X21-4
Black
Signal -
1200A-0270
Control Cable
1200A-0271
Switching Cable
Fan Motor
Switching Cable
