EX_RF module ALI 4.621 EX_DOC 04.202 Edition July 2015
4
2. Switch the intrinsically safe RF module on
After mounting the sensor on the support posts, connect the
module to the sensor by inserting the opposite end of the cable
into the 8-pin sensor socket, noting the keyway orientation.
Switch the intrinsically safe RF module on.
The operating time LEDs blink for 3 seconds. The module is now
ready for operation. When the instrinsically safe RF module is
switched on, it supplies power to the sensor. If no measurement
action is activated in the intrinsically safe computer, the power
supply to the sensor stops.
Operating time LED indicators
Power switch
State of LEDs
Indicates
3 LEDs lit continuously
Operating time is between 75%–100%
2 LEDs lit continuously
Operating time is between 50%–75%
1 LED lit continuously
Operating time is between 25%–50%
Only 1 LED blinking (slowly)
Operating time is under 25%
Only 1 LED blinking
(very fast)
Operating time in critical phase.
Measurement should not be taken
Summary of Contents for 4.621. EX
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