Sterling 882.00379.00 manual Installing Station Bypass Switches

Figure 34: Volume-Fill, Time-Fill, Vacuum Receiver Wiring Connections

24 VDC Control Circuit

	(SOL)			+24 VDC			(SOL)
Vacuum						Vacuum
seq. valve				From controller output for	seq. valve
			Brown	vacuum sequence valve solenoid
				+24 VDC
		Hopper-Full	Blue	0 VDC
		switch (PRS)	Black

+24 VDC

From controller output for vacuum sequence valve solenoid

0 VDC

Bin-Full	To controller input for
switch
(LS)	Hopper-Full/Bin-Full switches

Bin-Full switch (LS)

To controller input for Bin-Full switch

Vacuum Receiver - Volume Fill Vacuum Receiver - Time Fill

(SOL) Vacuum seq. valve

+24 VDC

From controller output for vacuum sequence valve solenoid

(SOL)

Vacuum seq. valve

+24 VDC

From controller output for vacuum sequence valve solenoid

					Brown	+24 VDC
	Hopper-Full				Blue	0 VDC
		switch (PRS)			Black					Brown	+24 VDC
					Blue					Blue
											O VDC
					Brown	+24 VDC
									Bin-Full	Black	To controller input for
				Bin-Full	Black				switch
						To controller input for
				switch					(LS)		Bin-Full switch
				(LS)	Hopper-Full/Bin-Full switches			Vacuum Receiver - Time Fill
			Vacuum Receiver - Volume Fill
							(when using proximity switch as a Bin-Full switch)
(when using proximity switch as a Bin-Full switch)

Installing Station Bypass Switches

The manufacturer recommends field-installing a station bypass switch (shown below) in a convenient location at each vacuum hopper in series with the flapper dump Bin Full (LS) switch. Check local codes.

Turning off this bypass switch simulates a full machine bin, cancels a No-Convey alarm, and takes the receiver out of the loading sequence until the switch is closed. This allows on-the- fly processing changes and cancels No-Convey alarms.

If the bypass switch is turned off while a hopper is filling, the switch simulates a full vacuum hopper and stops the conveying of material to that hopper immediately.

Conveying System Mechanical Components Chapter 3: Installation 69 of 138