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T
ROUBLESHOOTING
TRIAC Output Active with Red TRIAC LED off:
Tests for AC power output from the TRIAC should only be made when a device
or load is connected between the TRIAC OUT and NEUTRAL terminals of the
TRIAC terminal block. Attempting to measure output voltage with nothing
connected to the TRIAC terminal block will result in a false output reading which
may show partial or full line voltage present at all times. This is due to the TRIAC
snubber circuit in the MX001 that protects the TRIAC from surge damage due to
inductive loads. This circuit produces a small amount of AC output (5mA) at the
TRIAC terminal block that can be measured when no load is connected there
but is of no consequence otherwise.
To test properly for AC power output from the TRIAC, temporarily connect a 60W
light bulb in a wired test socket to the TRIAC output. This lamp will provide a
proper load for the TRIAC. If the bulb lights when the red LED TRIAC indicator is
OFF, then MX001 circuit damage is indicated as the problem. The unit can be
damaged if the TRIAC output is accidentally shorted.
No Sensor Input Indication (Red S in LED does not light):
1. Review the documentation that came with your sensor to learn the type
of output the sensor provides. Review the MX001 manual and find the
set up procedure that applies to your sensor. Check for proper
connection of the sensor to the MX001 sensor terminal block plus
proper positioning of the S set up jumper J1. (Depends upon sensor
type in use.)
2. Check your sensor for output indication. Most sensors have a small
indicator on them or their controller that lights when the sensor output is
active. Make sure the sensor is active when expected.
3. Check the positioning of the sensor making sure it is oriented correctly.
4. Check sensor gain/sensitivity adjustment for correctness. Most sensors
provide this adjustment to adapt to various sensing conditions. Check to
see if the gain/sensitivity is not set too low in diffuse proximity type
sensors or not set too high in beam break type sensors. Review the
documentation that came with your sensor to learn how to make this
adjustment correctly.
5. Make sure the MX001 scanner link cable is connected to both the
scanner and the MX001.