
10.12 Test the Proximity Sensor for Hydraulic
Limit Switch Option
WARNING
Use the appropriate protective clothing when you work with moving parts.
Failure to do so can cause serious injury.
CAUTION
Voltage supply to proximity sensor shall be <30 V
DC
and the output current
shall be <200 mA. Excess voltage and current could damage the sensors.
Make sure that the proximity sensor cables are free from mechanical
devices which could damage them.
CAUTION
NOTE
The operating temperature of the proximity sensors is from -25 to 180°C
(-13 to 356°F).
1. Make sure that the hydraulic system is completely assembled.
2. Apply a voltage of 10 to 30 V
DC
to the proximity sensor. Make sure it is
<30 V
DC
.
3. Operate the hydraulic actuator until the piston is in the closed position.
Stop the hydraulic actuator at this position.
4. Adjust the sensor’s distance using the lock nuts until the sensor detects
the trigger ring, after which the LED light will turn on.
5. Operate the hydraulic actuator until the piston top is in the open position.
Stop the hydraulic actuator at this position.
6. Adjust the second proximity sensor’s distance using the lock nuts until the
sensor detects the trigger ring, after which the LED light will turn on.
7. Disconnect the proximity sensor and the hydraulic actuator unit from the
power supply.
8. If applicable, install the sensor plate with the screws as per the
specification on the General Assembly drawing.
10.13 Maintenance Procedures for 5500 Series,
6X00 Series and 7100 Series
WARNING
Extreme heat. Avoid contact with heated surfaces.
Use appropriate protective clothing. Failure to do so can cause serious
injury. If possible keep cooling on within Hot Half.
Do not assemble new O-rings if the plates are still hot.
Drain the oil before removing the pin from the hydraulics.
10-20
© 2020 Mold-Masters (2007) Limited. All Rights Reserved.
HYDRAULIC / PNEUMATIC ACTUATORS
Hot Runner User Manual
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