Nexen RSD200 964531 - Manual (Page 22)

FORM NO. L-21161-E-0108 22
10.0 TROUbLeShOOTINg
Problem Possible Cause quick Test Corrective Action
Green LEDs are not lit.
No power to RSD200
board
Place the positive lead of Volt Meter on RED wire
and Negative Lead on bLACK wire. Should
meausre +24VDC.
If proper voltage is not measured: check wire
connections and/or replace power supply.
Connection failed error
when CONNECT icon
is pressed, or PC is
not communicating
with RSD200.
RSD not powered up Green LEDs, I1 and I2, on board should be lit. Apply proper power to RSD200.
Cable not connected
Ensure cable is connected from PCs RS232 port to
P5 on the RSD200 board.
Connect cable properly.
Faulty RS232 cable Test continuity of cable (See Figure 5). Replace cable if faulty.
Jumper W2 in wrong
position
Inspect position of W2. Move W2 to position 1.
bad Port number error
is reported when
CONNECT icon is
pressed.
Wrong serial port is
selected.
None
Select Communications Setup and switch to
another port.
Digital Inputs not
responding.
Improper jumper
selection.
Check Jumpers W5 and W6 (Refer to Jumper &
Switch Settings).
Set jumpers properly and test again.
Input signals to RSD200
not being toggled. Toggle the inputs and check for proper voltage
changes (Refer to SPECIFICATIONS Section) Set signal up properly and test again. Yellow
LEDs, I5 &/or I6, should light when input is high.
RSD200 output does
not move when the
machine is started.
Start/Stopped Signal is
not setup correctly.
The green trend line on the Diagnostics screen
should show the Start/Stopped signal high when
the machine is running. Check the setup and make sure rotary switch
selection is correct for the type of Start/Stopped
signal used.
RSD200 is in MANUAL
mode. Check SWITCH TO MANUAL button on the
Diagnostics window.
Press the SWITCH TO MANUAL bUTTON and
then SWITCH TO AUTOMATIC when the
manual operations window appears.
RSD200 output
changes, but the
dancer arm does not
move.
No air pressure to brake.
Use RSD200 setup screen to set Stopped Output
to 100% and test if roll can be rolled by hand.
Troubleshoot pneumatic air circuit and check the
pressure to the brake or clutch.
Output limits are not set
correctly. Use RSD200 Setup screen to check the Maximum
and Minimum Output Limits.
Set Maximum and Minimum Output Limits
according to output range required (Refer to
SETUP section).
Tension is set too high
on machine.
Reduce the dancer pressure/weight and test again.
If you have a multi-piston brake, make sure there
are enough brake pistons engaged.
No air pressure in roll
core.
Core shaft should turn when the machine runs. Apply proper air pressure to core and test again.
Dancer Setpoint set
improperly. Use RSD200 Tuning window to check the
DANCER SETPOINT % Start with a DANCER SETPOINT of 50% (See
the INSTALLATION section.)
brake Clutch, or Drive
does the opposite of
what it should.
Controller action is
backwards. The brake output goes to minimum when the dancer
arm storage is at the maximum or vise versa. Change Jumper W1 setting (Refer to Jumper
and Switch settings).
When machine speed
is constant, dancer arm
cycles continuously
above and below
setpoint or between
max and minimum limit.
Gain is set too high. Reduce Gain and see if arm stops cycling. Refer to the TUNING section.
Tension compensation
not setup correctly
(RSD200P only)
Measure tension on machine and see if it is close to
the tension displayed on the RSD200 Diagnostics
screen. Refer to SENSOR CALIbRATION section.
RSD200 output goes
to 0% output during
acceleration (brake
applications only). Machine acceleration is
too fast.
None
For a dancer control to work properly, the
machine acceleration should be set so that
some braking is used during acceleration. When
the output to the brake is 0%, the RSD200 has
no control over the dancer position.