For:
Modelica.Electrical.Analog.Sources.StepVoltage pmSource(startTime = 0, V = pmActuator.R * 1.5) "Steady state current 1.5A" annotation(Placement(transformation(origin = {-70, -30}, extent = {{-10, 10}, {10, -10}}, rotation = 270)));
and
Modelica.Electrical.Analog.Sources.StepVoltage cSource(startTime = 0, V = cActuator.R * 1.5) "Steady state current 1.5A" annotation(Placement(transformation(origin = {-70, 40}, extent = {{-10, 10}, {10, -10}}, rotation = 270)));
the binding to V should probably involve constant expressed in "A".