What is the functional purpose of the "MS 2"...

Study

Question 1 of 2066636eed28f7522a1c51d63e

What is the functional purpose of the "MS 2" contacts in the hoist controller circuit shown in the illustration? Illustration EL-0102

Back

Question 1 of 20

66636eed28f7522a1c51d63e

What is the functional purpose of the "MS 2" contacts in the hoist controller circuit shown in the illustration? Illustration EL-0102

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Trace where the MS 2 contacts are physically located in the control circuit and what components they feed (H coil, L coil, UV coil, or contactor stages). • Compare the master switch position chart (which MS contacts close in each hoist/lower notch) with the speed/point sequence for the hoist motor. • Note how the first and second point hoisting/lowering are normally achieved in multi-speed/stepped-resistor hoist controllers.

💭 Think About

• When only the very first hoist position is selected, which MS contacts actually complete a path to any coil or contactor? Does MS 2 take part at this stage, or at a later point? • Follow the circuit from the power source, through UV and OL, down through MS 2: which coil(s) can be energized only when MS 2 is closed? What operating condition does that correspond to? • Does MS 2 have any connection to the UV coil circuit itself (for resetting), or is it clearly in the speed/point selection chain? What does that tell you about options C and D?

✅ Before You Answer

• Verify exactly which master switch positions (hoist and lower) show an "X" under MS 2 in the master switch chart. • Confirm whether MS 2 is in series with any of the point contactors (1A, 2A, 3A, 4A) or the H/L coils; that will tell you whether it is tied to first or second point operation. • Make sure the UV coil circuit path is understood: check if MS 2 is anywhere in that loop before choosing an answer that involves UV resetting.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed

Study

Question 1 of 2066636eed28f7522a1c51d63e

What is the functional purpose of the "MS 2" contacts in the hoist controller circuit shown in the illustration? Illustration EL-0102

Back

Question 1 of 20

66636eed28f7522a1c51d63e

What is the functional purpose of the "MS 2" contacts in the hoist controller circuit shown in the illustration? Illustration EL-0102

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed