October 18, 2011 - Sprint Electric introduces QLX 3 phase field controllers for control of high current excitation fields on DC motors. The QLX uses 3 phase supply power to provide a controlled DC field current. It will work with the armature controller to provide all usual field control functions including field reversal. The model range spans currents from 12 to 2250 Amps, with fully digital control and all the usual communications facilities. QLX 3 phase field controllers are ideal for controlling the high current excitation fields of DC motors used in applications such as a hot rolling mill and steel handling.
The QLX 3 phase field controller has field bus options such as Profibus, DeviceNet, CanOpen, Modbus TCP/IP, EtherNet etc. The QLX range consists of five frame sizes with the maximum current capability of up to 2250 Amps. It offers Field Reversal and Auto Field Weakening for high power fields. It also has a built-in Standby Field mode. For start and stop functions, the QLX directly interfaces with the main armature controller such as the PLX or other.
It cost-effectively adds reversing to large DC motors where the facility does not already exist, or exists only with contactors.