EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company

10.3.2 Problems with inverter settings
[ 1 ] Nothing appears on the LED monitor.
Possible Causes
(1) No power (neither main
power nor auxiliary control
power) supplied to the
inverter.
(2) The power for the control
PCB did not reach a
sufficiently high level.
(3) The keypad was not
properly connected to the
inverter.
What to Check and Suggested Measures
Check the input voltage and interphase voltage unbalance.
Turn ON a molded case circuit breaker (MCCB), a residual-currentoperated
protective device (RCD)/earth leakage circuit breaker (ELCB) (with
overcurrent protection) or a magnetic contactor (MC).
Check for voltage drop, phase loss, poor connections, or poor contacts and
fix them if necessary.
Check if the jumper bar has been removed between terminals P1 and P(+) or if
there is a poor contact between the jumper bar and those terminals.
Mount a jumper bar or a DC reactor between terminals P1 and
P(+). For poor contact, tighten up the screws.
Check whether the keypad is properly connected to the inverter.
Remove the keypad, put it back, and see whether the problem recurs.
Replace the keypad with another one and check whether the problem recurs.
When running the inverter remotely, ensure that the extension cable is securely
connected both to the keypad and to the inverter.
Disconnect the cable, reconnect it, and see whether the problem recurs.
Replace the keypad with another one and check whether the problem per
recurs.
[ 2 ] Data of function codes cannot be changed.
Possible Causes
(1) An attempt was made to
change function code data
that cannot be changed
when the inverter is running.
(2) The data of the function
codes is protected.
(3) The WE-KP terminal
command ("Enable data
change with keypad") is not
entered, though it has been
assigned to a digital input
terminal.
(4) The key was not
pressed.
(5) The data of function codes
F02, E01 through E07, E98,
and E99 cannot be
changed.
(6) The target function code(s)
does not appear.
What to Check and Suggested Measures
Check if the inverter is running with Menu #3 "Drive Monitoring" using the keypad
and then confirm whether the data of the function codes can be changed when
the motor is running by referring to the function code tables.
Stop the motor then change the data of the function codes.
Check the data of function code F00 (Data Protection).
Change the F00 data from "Enable data protection" (1 or 3) to "Disable data
protection" (0 or 2).
Check the data of function codes E01 through E07, E98 and E99 and the input
signal status with Menu #4 "I/O Checking" using the keypad.
Input a WE-KP command through a digital input terminal.
Check whether you have pressed the key after changing the function code
data.
Press the key after changing the function code data.
Check that saue is displayed on the LED monitor.
Either one of the FWD and REV terminal commands is turned ON.
Turn OFF both FWD and REV.
When "0. QUICK SET" is selected, only the particular function code(s) appears.
Select "10. USER SET" and add the target function code(s) to the set of
function codes registered for Quick Setup. After that, select the target
function code(s) and change its data. For details, refer to Chapter 3, Table 3.5
"Menus Available in Programming Mode."
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