Chapter 4 - Control Connections Control Locations The ACS 300 can be controlled by the optional keypad control panel or by external control signals connected to the terminal block X1 of the control card. Serial communication interface is also available. Control Wiring AWG No. 18 or 20 multiconductor shielded cables should be used for all ACS 300 control wiring. Tighten the connections to 4.5 lbs.-in. torque. Note! The control connections of the ACS 300 are galvanically isolated from the power circuitry but not from the chassis ground. This is the factory default setting. Control circuit common can be disconnected from chassis ground by cutting the 0 ohm resistor (jumper wire) R191.
Figure 4-1 shows the location of the control terminal block, X1 and the configuration switches and jumpers on the ACS 300 control card. Figure 4-2 shows the control terminal block connections and summarizes the control terminal functions. ACS 300 User’s Manual 21