User manual

For more information visit: www.EatonElectrical.com
What Happens If ...?
MN05013003E252
Possible situations when
creating circuit diagrams
ERROR: CLOCK Clock error Replace EZ
ERROR: LCD
LCD is faulty Replace EZ
ERROR: ACLOW
Incorrect AC voltage Test the voltage
EZ is faulty Replace EZ
EZ system
messages on the
LCD
Explanation Remedy
Possible situations when
creating circuit diagrams
Explanation Remedy
Cannot enter contact or relay in
circuit diagram
EZ is in RUN mode Select STOP mode
Time switch switches at wrong
times
Incorrect time or time switch parameters Check time and
parameters
Message when using a memory
card PROG INVALID
EZ memory card contains no circuit
diagram
Change the version of
EZ or change the circuit
diagram on the
memory card
Circuit diagram on the memory card
uses contacts/relays that EZ does not
recognize
Power flow display does not
show changes to the rungs
EZ is in STOP mode Select RUN mode
Association/connection not fulfilled Check the circuit
diagram and parameter
sets and modify as
required
Relay does not activate coil
Incorrect parameter values/time
• Analog value comparison is incorrect
• Time value of timing relay is incorrect
• Function of timing relay is incorrect
Relay Q or M does not pick up Relay coil has been wired up several
times
Check coil field entries
EZ500_700.book Page 252 Tuesday, May 3, 2005 5:15 PM