Watlow MICRODIN - Manual (Page 85)

Operations
Corrective Action Reference
Wa t l o w M i c r o D I N 6 . 5
• Check switches, fuses, breakers, interlocks, limits, connectors, • See Watlow Publication
etc. for energized condition and proper connection #COR-AG-76, “Putting it
All Together.”
• Measure power upstream for required level • See p. 3.7, 3.10, 3.11, A.14
• Check wire size
• Check for bad connections
• Check and reset unit DIP switches 1-6 to correct address • See p. 2.7
• Check and reset unit DIP switch 8 to correct baud rate • See p. 2.7
• Look for a break in the daisy chain • See p. 3.8
• Verify correct connections and test wiring paths • See p. 3.8
• Check converter box wiring and its documentation • See p. 3.8
• Reconfigure computer's COM port setup and verify communications ok • See COM port information
• Check the communication card documentation for setable variables, operational testing • See COM baud information
• Restart COMS software, check for settings agreement. Verify COM bus active
• See software document
• Check sensor connections • See p. 3.5, 3.6, 3.7
• Check sensor connections and sensor wiring • See p. 3.5, 3.6, 3.7
• Change the Sensor Type parameter (Input Group) to match the sensor hardware • See p. 5.5
• Measure power upstream for required level • See p. 3.7, 3.10, 3.11, A.14
• Verify that the temperature surrounding unit is 32° to 149°F (0° to 65°C) • See p. A.14
• Check sensor function. The Open Loop Detect parameter (Error Group) indicates it may be broken • See p. 5.22
• Check the Calibration Offset parameter (Input Group) value; set it to a lower level • See p. 5.6
• Send the alarming MicroDIN unit a “clear alarm” signal (Modbus ™ : 331) • See p. 5.17
Note: The condition causing the alarm must also be resolved for the alarm to clear • See p. 5.18, 5.19
• To clear the alarm, correct the alarm condition; check to see if the alarm is latched • See p. 5.18
• Check the alarm sides setting • See p. 5.20
• Check the alarm type setting • See p. 5.19
• Check the alarm logic for compatibility with system peripherals and annunciators • See p. 5.21
• Check the power limit setting • See p. 5.9
• Check the operation mode • See p. 5.18
• Check the alarm output function • See p. 5.19
• Check °F/°C setting • See p. 5.3
• Check the calibration offset value; set it to a lower level • See p. 5.6
• Return unit to factory • See back cover
• Cycle power to unit • See p. 3.10 - 3.11
• Return unit to factory • See back cover
• Return unit to factory • See back cover
• Cycle power to unit • See p. 3.10 - 3.11
• Recalibrate unit • See p. 6.6
• Return unit to factory • See back cover
• Return unit to factory • See back cover
• Return unit to factory • See back cover