Watlow MICRODIN - Manual (Page 20)

20
Watlow MicroDIN Quick Start Guide
Corrective Action
• Check switches, fuses, breakers, interlocks, limits, connectors,
etc. for energized condition and proper connection
• Measure power upstream for required level
• Check wire size
• Check for bad connections
• Check and reset unit DIP switches 1-6 to correct address
• Check and reset unit DIP switch 8 to correct baud rate
• Look for a break in the daisy chain
• Verify correct connections and test wiring paths
• Check converter box wiring and its documentation
• Reconfigure computer's COM port setup and verify communications ok
• Check the communication card documentation for setable variables, operational testing
• Restart COMS software, check for settings agreement. Verify COM bus active
• Check sensor connections
• Check sensor connections and sensor wiring
• Change the Sensor Type parameter (Input Group) to match the sensor hardware
• Measure power upstream for required level
• Verify that the temperature surrounding unit is 32° to 149°F (0° to 65°C)
• Check sensor function. The Open Loop Detect parameter (Error Group) indicates it may be broken
• Check the Calibration Offset parameter (Input Group) value; set it to a lower level
• Send the alarming MicroDIN unit a “clear alarm” signal (Modbus ™ : 331)
Note: The condition causing the alarm must also be resolved for the alarm to clear
• To clear the alarm, correct the alarm condition; check to see if the alarm is latched
• Check the alarm sides setting
• Check the alarm type setting
• Check the alarm logic for compatibility with system peripherals and annunciators
• Check the power limit setting
• Check the operation mode
• Check the alarm output function
• Check °F/°C setting
• Check the calibration offset value; set it to a lower level
• Return unit to factory
• Cycle power to unit
• Return unit to factory
• Return unit to factory
• Cycle power to unit
• Recalibrate unit
• Return unit to factory
• Return unit to factory
• Return unit to factory