Troubleshooting; Error Codes - Graco InvisiPac HM25 Operation, Repair, And Parts

Troubleshooting

Error Codes

When errors occur, press
cally when the condition that caused it is corrected. Active errors scroll on the menu bar.
Alarms shut down the pattern controller and activate the dry contact PLC output. Advisories and deviation are infor-
mational only and do not shut the system down.
Code Description
CAXP Communication error ADM unable to communi-
A40P Over-current
A4XP Over-current
A4_P Over-current
K4_P High pulse rate
Code Description Cause
V1_P Low voltage Power supply voltage below 18
or VDC
V2_P
V3_P High voltage Power supply voltage above 28
or VDC
V4_P
K1_P Low line Poor encoder coupling on line
speed "_"
Line speed is less than low line
speed alarm level on line "_"
EBTX PC-8e token Missing or loose PC-8e token
removed
334784G
to acknowledge each error. After being acknowledged, the error will clear automati-
Alarms (shut the system down)
Cause
cate with pattern control-
ler
Over-current on trigger
and/or run up power sup-
ply output (pins identified
by "+" on control board)
Over-current on commu-
nication cable output (P3
on control board)
Over-current on valve
output "_"
Encoder "_" pulse rate
exceeds maximum limit
Advisories and Deviation (do not shut the system down)
Solution
Check for green power light on the pattern controller
Check communicating cabling
Check accessory cabling for short circuit.
Check ADM CAN cabling for short circuit
Replace display (ADM)
Check wiring for short circuit
Verify valve resistance is higher than 24 ohms
Select encoder with lower pulse rate
Reduce line speed or gearing ratio
Solution
To check for overloaded power supply, measure the voltage
with all valves off, and then with all valves on (purging)
To check for overheated power supply, allow the unit to cool
and recheck voltage
Adjust voltage to 24 Vis possible, or replace the power supply
Adjust voltage to 24 V if possible or replace the power supply
Check to ensure proper coupling between line and encoder.
Verify pattern controller is reading appropriate line speed.
See Line Mode, page 30.
Increase line speed or decrease low line speed alarm level.
See Line Mode, page 30.
If missing, re-insert PC-8e token. If present, check for loose
connection.
Troubleshooting
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