ISA CCST Level III Practice Questions - ISA Certified Control Systems Technician (CCST) Level III Master Exam

Feedforward is the same as feedback but uses a different controller brand Feedforward measures the disturbance directly and applies corrective action before the disturbance affects the process variable, while feedback waits to detect the effect on the process variable Feedforward uses only proportional action, feedback uses PID Feedforward controls multiple variables, feedback controls only one