Excessive web curl. If web flutter or curl exists, change parameters 6 and
18 to higher values. Refer to page
12
17 for more information about setting
controlle
r parameters.
All actuators. End-of-travel mode is incorrect. Set parameter 2 to the
correct value. Refer to page
13
17 for more information about setting controller
para
meters.
14
All actuators. Actuator cable wires are broken, shorted or connected
to
wrong terminals of J5. Refer to the connection diagrams on page 137.
C
heck wiring at J5 and check the actuator cable for broken or shorted
wires.
15
Actuators with potentiometer feedback (MT, SF, HL, HF, HT, and UHT).
End-of-trav
el limits not set correctly. Parameters 9 and 10 must be
adjusted to stop the actuator before the web guide or actuator hits any
obstruction. Refer to page
17 for more information about setting controller
para
meters.
16
Actuators with potentiometer feedback (MT, SF, HL, HF, HT, and UHT).
Potentiometer failure.
Refer to the potentiometer replacement procedure
on page
86.
17
Actuators with limit switches (MM, MME, MN, and MNE). Limit s
witch
failure. Check the limit switch voltage at J5 terminals 5 and 6 (terminal 10
is GND). This voltage should normally be 0.0 VDC (switch is closed), then
jump to +5.0 VDC when the limit is reached (switch opens). If the correct
voltages are not present, replace the limit switch in the actuator or return
the actuator for repair.
Actuators with limit switches (MX). Limit switch failure. The end-of-
travel limit switches in the MX-series actuators directly control the motor
circuit and cannot be monitored externally. If a limit switch has failed,
replace the switch or return the actuator for repair.
18
Reversed motor wires. Restore the motor wire connections at J5
terminals 1 and 2 to the proper connection. Refer to the connection
diagrams on page
19
137. Change the value of parameters 3, 4, or 50 as
requi
red. Refer to page 17 for more information about setting controller
para
meters.
Edge detector not calibrated. Refer to page 20 58 for calibration instructions.
Edge detector: transducers covered with dust or other material. Clean
the edge detector transducer face with a cloth dampened with water or a
mild detergent solution. If the contamination cannot be removed with this
method, return the edge detector for repair.
21
Digital line guide: optic
s covered with dust or other material. Clean the
underside of the sensor with a soft cloth dampened with water or a cleaning
solution suitable for photographic lenses. If the contamination cannot be
removed with this method, return the sensor for repair.
Edge detector failure. Observe the value of parameter 14 or 15 as
required. If this value is below 100, the edge detector is failing and must be
returned for repair. Refer to page
22
17 for more information about displaying
controlle
r parameter settings.
Auto-mode speed limit setting is incorrect. Change the value of
parameter 7. Refer to page
23
17 for more information about setting controller
para
meters.
MICRO 4000
NET Web Guide Control System
13
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