ISA Certified Control Systems Technician (CCST) program
Certified Control System Technicians (CCSTs) calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables.
In a 24 VDC open-collector output sinking configuration, which of the following could occur.
A. Configuration increases the risk of electrostatic discharge (ESD) from static electricity.
B. Short circuit from load device to ground can cause unintended actuation.
C. The triac could remain on when the current (but not voltage) is zero unless a snubber network is used.
D. Inductive devices such as motors can generate back EMF when turned on.