Scada Regs

Question 1

An enable solenoid is located where?

Answer 1

On the 3 way ( scada 3 way) shuttle

Question 2

An ENABLE solenoid is typically ____________ solenoid.

Answer 2

Normally Closed/ powered open

In event of outage, solenoid closes flow from 3 way, allowing 3 way to shift to hydraulic. (Therefore, if it is scada mode, solenoid will almost )

Question 3

A pump lockout solenoid is found where?

Answer 3

On the downstream side of bypass reg (next to CRD)

Question 4

A pump lockout is typically _________ / _________

Answer 4

A normally open/p.c. solenoid

( would be n.c./p.o. If on three way)

Question 5

When the pumps are running, the pump lockout ( on the bypass) is in what position ?

Answer 5

Powered/energized CLOSED
so bypass will not open

Question 6

A pump lockout comes (before/after) the CRD?

Answer 6

BEFORE. The bypass always works off the pilot, so energizing closed, your taking away the pilot control

Question 7

What position is pump lockout (on bypass) when pumps are off?

Answer 7

Pump lockout (normally open/pc)

When pumps are off, pump lockout is de-energized, so it will be open)

Question 8

The enable solenoid is _________ when the pumps are running?

Answer 8

The enable solenoid is de-energized(closed) when the pumps are running and the scada reg is on the hydraulic side.