Dimensions; Installation - 4B M800 Elite Series Operation Manual

ALL DIMENSIONS IN INCHES
Sensing Face
1-9/16"
The M800 Elite should be wired as shown in the connections diagrams on page 8. The inductive sensing
device, located in the front of the M800 Elite enclosure is designed to detect a metal target on a shaft. The
target can be a bolt head or similar. Ideally, the target should be a ferrous metal but non-ferrous metal
will detect at a shorter range. Maximum range for a ferrous material is 11/32 inches (9 mm) and for non-
ferrous metal is 7/32 inches (6 mm), assuming a 3/4 inch (19 mm) diameter target. Smaller targets may
be used but operating distance will be reduced. The M800 Elite should be mounted adjacent to the target,
ensuring that the distance to the target does not exceed the stated maximum. Typical mounting methods
are shown in fig. 4 (page 9). When mounted against a solid steel shaft, the target or bolt head should
protrude from the shaft about 3/8 inch (10 mm). Otherwise the sensor will not be able to distinguish the
target from the shaft and the red input light would stay on permanently (instead of flashing) and it would
not be possible to calibrate the unit.
TACHO OUTPUT -
An opto-isolated output is provided, rated at 30V 100 mA max. The output is ON when the target is detected
and OFF otherwise. This pulsed output can be used to connect to remote tachometers, PLC inputs, speed
indicators or other electronic products.
O.S.H.A. requires that all exposed rotating shafts are provided with a full guard. Therefore, this device
and its target must be equipped with a guard.
Fasten the M800 Elite to a suitable mounting bracket, such as 4B's Whirligig® universal shaft sensor
mount, with the nose of the switch within the sensing range of the target, as shown below -

DIMENSIONS

Top Side
1-5/32"

INSTALLATION

WARNING
M800 Elite Shown on Optional
Whirligig® Shaft Sensor Mount with
Mag-Con™ Magnetic Connector
PAGE 7
4-19/32"
2-3/8"
Ø1/4" x 4
1/2" NPT
Conduit Entry
6 ft. Long Cable
8 x 20 AWG Overall
8.3 mm Jacket Diameter