MASSO Homing Sensor

The MASSO homing sensor is a water-resistant infrared fork sensor with no moving parts. A trigger plate on the machine passes between the forks to break the beam at the home position.

Repeatability
Better than 10 µm
Supply
9–24 VDC
Rating
IP65

MASSO homing sensor wiring diagram

1. Specifications

ItemDetail
SensingInfrared light beam, no moving parts
RepeatabilityBetter than 10 µm (0.0004 in)
ProtectionIP65, water-resistant
Supply voltage9–24 VDC
Cable5 m (16 ft) flexible cable supplied
MountingM3 screws

2. Connections

WireFunction
Brown+9–24 VDC
Blue0 V
BlackNO (normally open) output
WhiteNC (normally closed) output
CAUTION
Connecting power with reversed polarity damages the sensor.

3. Mounting and triggering

The sensor sends an infrared beam from one fork to the other; when something interrupts the beam, the output changes. Mount it where it won't be damaged during operation, so a metal or other suitable trigger plate on the machine passes between the forks at the home position.

Trigger plate passing between the sensor forks

INFORMATION
Keep the sensor away from external infrared sources such as direct sunlight – they can cause false triggering.

4. Powering the sensors

On MASSO G3 and MASSO G3 Touch, power homing sensors from any of these:

The MASSO power supply distribution point
A separate power supply that shares a common ground (negative rail) with MASSO
The MASSO auxiliary power terminals (red and black terminals between the input and output terminals)
WARNING
Fit a 1 A fuse between the power supply and MASSO to protect against accidental short circuits on the auxiliary power connectors. Without it, the controller can be permanently damaged.
CAUTION
The auxiliary power and ground terminals are for low-current devices only. High-current loads can permanently damage the controller.