Rockwell Automation 44887-PUB, 44887 Enwatch - Manual (Page 24)

Publication GMSI10-UM031C-EN-E - January 2009
20 Installing the Enwatch
Connecting a Magnetic Hall Effect Sensor
The following diagram shows the external trigger wiring from a magnetic Hall
effect sensor (magnetic interrupter) to the terminals of the Enwatch unit.
A - B
Network Input
RJ-45 Jack
Status LED's
RS-232
DB-9 (female)
DC Power In
J6
J5
J4
J3
JP 19
JP 18
JP 20
JP 21
JP 17
A - B
A - B A - B A - B A - B A - B A - B A - B A - B A - B A - B A - B A - B A - B A - B
TX RX LK OB
+
_
J9
J8
J11
U28
U20
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 9-10-11-12-13-14-15-16 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 9-10-11-12-13-14-15-16
3 3
2 2
1
3 3
2 2
1
3 3
2 2
1
3 3
2 2
1
Normal / Monitor
Mode Select
RV2
RV3
RV1
4
3
2
1
TYPICAL WIRING FOR MAGNETIC HALL EFFECT SENSOR
Groun d
Input
Power
IMPORTANT
If an external sensor is to be used that is powered from pin
1 of J3, J4, J5 or J6, then the jumper corresponding to the
trigger channel must be inserted to provide a ground return
path for the sensor power. See “Trigger Isolation Jumpers”
on page 9.