Troubleshooting Guide - Idex Pulsafeeder MPC Vector Installation, Operation & Maintenance Manual

19. Troubleshooting Guide

Problem
No AC drive red LEDs lit
Should see "---"after power up
sequence.
No Green LED blinking on controller
board.
Green LED not blinking on controller
(local) board.
LED backlighting not lit on remote
handheld, but green LED blinking at 1
second interval on local board.)
LED's not lit, keypad not responding
LCD display not readable, no text on
display (too light/too dark)
No Text on LCD display
Handheld displays
"AC Drive Fault
Communications"
on LCD handheld screen.
Handheld displays
"Communication
--ERROR—"
Handheld displays
"AC Drive Fault
OVERCURRENT"
Potential Cause
POWER
Improper AC line input wiring or low
line input voltage.
DC power supply not powered.
DC power supply not providing output
power to local control board.
HANDHELD DISPLAY
Remote handheld not receiving power.
Remote keypad connector not seated
properly.
Contrast not adjusted properly.
Improper software initialization
SYSTEM ERRORS
Communications link between the AC
drive and local board has timed out
Communications link between the local
control board and the handheld remote
has timed out.
Motor is drawing excessive current and
the AC drive is limiting its output.
93
Solution
Check L1, L2, L3 for proper voltage
(230/480 VAC) and wiring. Check
circuit breakers.
Check Blue and Brown wire for voltage
at power supply
230 VAC systems = ~1.4 * AC line =
1.4 * 230 = 325 VDC
480 VAC systems = 230 VAC
Check voltage with meter on output of
power supply
Black(-)-to-Red(+) = 5vdc
Black(-)-to-Green(+) = 12 vdc
Open Handheld Front Cover and
measure voltage J5-1/2 to J5-3/4.
Voltage should be ~ 12.0 volts dc. See
Figure 21-1 Handheld Remote Wiring
Open Handheld Front Cover and
measure voltage and check J4 for
proper connection. See Figure 21-1
Handheld Remote Wiring
Use ENTER key with UP ARROW and
DOWN ARROW keys to adjust darker
and lighter, respectively.
Remove power for 5 seconds then
reapply.
Ensure 3 wire connection from local
control board to AC drive. J28 on local
board to drive control terminal strip
pins 2-ground (green), TXA (red), and
TXB (black).
Ensure connections between local board
and remote handheld are made. See
Figure 21-1 Handheld Remote Wiring
for connection details. Be sure to check
black/white and white wires.
Ensure proper motor sizing and drive
sizing for application.