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MNS LED State indicator Table for CNS product
LED state
OFF
Solid RED
Solid Green
Blinking RED
Blinking Green
8.4.2 Base Unit Status LED
The green status LED on the Base Unit will flash at a constant (2 times per second) rate if the
drive is disabled and there is no base-unit fault condition. The green status LED will remain
illuminated if the drive is enabled and there is no base-unit fault condition. At anytime a base-unit
fault condition exists this LED will flash a code. The code is signaled by a 2 second LED off-time
followed by a series of flashes. Counting the number of flashes indicates the numerical fault code.
8.4.3 7-Segment Display
The 7-segment display is under control of the position loop controller. The decimal point is always
on and has no meaning. The display will flash a series of numbers on power-up indicating the
drive model number. The display then goes into normal operation. Power-up indicator may flash
b-S-2-0-3-6 indicating that the base unit drive model is 'S2036(0 implied)' model. Under normal
operation the 7-segment display simply displays a 'd' for disabled without faults or an 'E' for
enabled without faults. Anytime that a fault condition is detected by the position controller card the
display will flash code sequence. The Status display displays drive state, fault code, or warning
condition.
8.4.4 Clearing Fault Conditions
There may be several ways to clear any given fault. The tables located below will provide more
information directed at explaining the recovery method for a particular fault. There are a couple of
guidelines that should be noted. To clear a fault the condition that caused the fault must no longer
exist. (i.e.: short circuit of motor leads has be cleared). All faults can be reset with a power cycle
of the logic control power. The GUI executing a Coldstart procedure can clear all faults. The
product can be configured to have an input serve a 'Clear Fault' input. The Clear Fault input is
limited as to what faults it can actually reset. Details of the Clear Fault input are listed in the below
tables. Definition of these codes can be found below.
8.4.5 Conditional Settings
It is possible that the actions of some 'less fatal' fault conditions have conditional settings
configurable within the User Interface Software. The following tables do not explain conditional
occurrences rather only the default actions.
8.4.6 S200 Position Controller Faults
47
Bus Communication
State
Off-line
Failed
Drive is enabled.
Faulted
Drive Disabled
Indication
Drive not on line
Critical failure on drive
or
Communication failure (bus off)
Drive may need to be replaced.
Drive is enabled, no fault on Bus
The drive has faulted or a time out has
occurred.
Drive is disabled, no bus fault
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