Commissioning control loop
Цель: Изучить тему «Commissioning control loop» и закрепить её практическими заданиями и самопроверкой.
2 акад. часа чтение и разбор теории, решение задач, работа со схемой или виртуальным стендом и проверка понимания.
Основной материал
After instruments individually checked, test closed loop. Verify controller action, valve action/fail position, SP/PV scaling, manual output, limits, interlocks, alarm thresholds and bumpless mode change.
Bump test
Small manual output change confirms process direction and response. If expected heating valve increase causes temperature decrease, something in action/wiring/process assumption is wrong. Perform only under approved conditions.
Практическая работа
Create checklist for temperature loop startup including manual verification before Auto and criteria to stop test.
Самопроверка
• Why verify controller action?
• What is bump test?
• Why manual first?
• What is bumpless transfer?
• When stop commissioning test?
Что нужно запомнить
- After instruments individually checked, test closed loop.
- Verify controller action, valve action/fail position, SP/PV scaling, manual output, limits, interlocks, alarm thresholds and bumpless mode change.
- Small manual output change confirms process direction and response.
- If expected heating valve increase causes temperature decrease, something in action/wiring/process assumption is wrong.
- Create checklist for temperature loop startup including manual verification before Auto and criteria to stop test.