Nordson Encore HD iControl 2, Installation, Troubleshooting, Repair

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© 2022 Nordson Corporation
1609758-04
4-28 Troubleshooting
Problem Cause Correction
Reciprocator measured
travel position does not
match the value shown
on the reciprocator
control panel or
configuration screen
Reciprocator not homed.
Touch the Home button and wait for the homing sequence to
finish, then check the position accuracy. The displayed position
will not be correct until the reciprocator is homed.
Incorrect reciprocator
encoder value entered.
The accuracy of the displayed position versus the actual position
of the reciprocator is determined by the configured encoder
resolution. Check the encoder resolution value.
Belt or chain drive
sprocket slipping.
Make sure the drive sprocket is securely connected to the gear
reducer output shaft.
Reciprocator does not
move in response to
move command
Refer to condition “No movement from reciprocator in response to move command.”
Mechanical failure,
drive or chain belt not
engaging drive sprocket,
or drive sprocket
slipping.
The position value changes but the reciprocator does not move.
This can occur because the encoder is connected directly to the
gear reducer output shaft. Check the drive belt and sprocket.
Incorrect reciprocator
speed controller
parameters.
Speed controller parameters must be set to specified values in
order to respond correctly to signals from reciprocator controller.
No reciprocator response
when Auto mode
selected
Refer to condition “No reciprocator response when Auto mode selected.”
Auto cycle delay in
progress
A 5 second delay occurs when Auto mode is selected. During the
delay a warning beeper should sound.
An end-of-travel limit
switch is engaged.
Check the iControl 2 Alarm log. Identify the fault and review the
fault troubleshooting information.
Invalid reciprocator
stroke settings.
Speed controller parameters must be set to accept commands
from the reciprocator controller.
Reciprocator “jumps”
back to a stop after
moving to a new position
Reciprocator Hysteresis
value too small.
Open Reciprocator Configuration screen and increase the
Hysteresis value.
The hysteresis value is the allowable over- or under-shoot
distance from the target position. If the reciprocator is within this
distance of the desired position when it stops, the iControl 2
system will not move it again to the target position. If the value
is not large enough, the reciprocator will over- or under-shoot its
destination and then “jump” back to it (called hunting).
A typical setting is 0.5 − 0.7 inches depending on the reciprocator
speed setting.