Calex PMB21 Operator's Manual - Page 5

Browse online or download pdf Operator's Manual for Accessories Calex PMB21. Calex PMB21 17 pages.

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WIRING

Check the distance between the sensor and the Modbus Master. If necessary, the sensor can

be ordered with a longer cable attached.

POWER SUPPLY

Be sure to use a 24 V DC power supply. The maximum current draw is 50 mA per sensor.

All sensors come with a 1 m cable and a mounting nut. The sensor can be mounted on

brackets or cut outs of your own design, or you can use the fixed and adjustable mounting

bracket accessories which are shown below.

Note: The sensor must be grounded at only one point, either the cable shield or the sensor

housing, but not both.

The air purge collar below is used to keep dust, fumes, moisture, and other contaminants

away from the lens. It must be screwed in fully. Air flows into the 1/8" BSP fitting and out of the

front aperture. Air flow should be no more than 5 to 15 litres/min.

Clean or 'instrument' air is recommended.