Thermo Scientific DSP2 - Page 22

16
Photo Eye , EMU and Reject Confirm Connections Plug PL2
Photo Eye
The photo eye is mounted on the infeed side of the metal detector just above the belt. The photo eye mounting distance should
be approximately equal to the smaller aperture dimension. The photo eye is used when inspecting discrete products.
Important: Insure link 2 in the power supply is in the photo eye position see Links on the following page.
EMU Sensing Head ( Shaft Encoder )
When using a variable speed belt conveyor it is necessary to use a EMU sensing head, or shaft encoder. The EMU Sensing
Head will generate an output pulse equal to the speed of the belt. This pulse is then used internally for configuring the reject
timing. Contact Goring Kerr if you require more information.
Reject Confirm
To insure contaminated product is rejected correctly a feedback signal from the reject device can be used. A microswitch or
photo eye connected to the reject device can be wired to terminals 6 and 4 on connector PL2. Contact Goring Kerr if you require
more information.
PL2
Eye
12V
GND
GND
P12V
RCHK
EMU
1
2
3
4
5
6
7
Omron Photo Eye
E3F-R1C4
White
Black
Red
Reflector
EMU Sensing Head
( Shaft Encoder )
Reject Confirm
Device
Figure 17
Power Supply Cable
Power to control unit Plug PL3
This connector is a plug-in terminal strip. It
may be easier to unplug it while making
terminal connections.
WARNING
This cable is for connection between
control panel and power supply only. Do
not connect any external devices or
supplies to PL3.
Figure 18
PL3
24 VA
AGND
REJ
FAULT
EMU
RCHK
7V
DGND
IO 1
IO 2
RX
TX
1
2
3
4
5
6
7
8
9
10
11
12
Red
Black
Orange
White
Green
Blue
Red/Blk
Blk/Wht
Org/Blk
Wht/Blk
Grn/Blk
Blu/Blk
To
Control
Panel
To Case
Ground
Shield
Cable: Belden 9261