Dynamatic CES, Instruction Manual, Page: 16 / 38

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When a level 0100, 0200 or 0300 fault exists it will be
indicated by an LED on the keypad and display board. A
control fault will be indicated by the absence of the
"control fault" LED on the I/O PCB.
Stop Main Motor Fault - There is only one fault that will
signal the stopping of the main motor in addition to
stopping the press. It is Fault No. 0101, Over-speed
Fault.
0101 Over-speed Fault - An over-speed condition is
defined as follows: If the tach feedback signal
exceeds the speed reference by a set percentage,
an over-speed condition exists. The time allowed
to be over-speed, before a fault is recognized, is
adjustable from 0 to 5 seconds. The over-speed
percentage is adjustable from 0 to 20%. The
reason the main motor is stopped in this case is
that it is considered to be in a runaway condition.
Set for minimum time and minimum over-speed
percent without causing nuisance tripping of fault.
When the over-speed fault is generated, the CES
controller functions in the following manner.
Upon sensing the over-speed fault, a stop motor fault
signal is sent to the press control to remove enable and
initiate the stopping sequence; this includes setting the
friction brake and removing enable from the CES
controller. Speed reference is set to zero. The clutch
converter is inhibited. The clutch contactor drop out
timer is initiated immediately upon detection of an over-
speed fault. The timer will cause the clutch contactor to
drop out in 450 milliseconds by removing the clutch ON
command to the contactor. The brake will be energized
by the negative speed error, while the speed is above
zero, to provide decelerating torque.
Stop Now Faults - There are 18 stop now faults. They
require the press to be stopped immediately, but not the
main motor. Each of these faults is described as follows:
0202 Loss of Tach Fault - Loss of encoder pulses with
10% of clutch current for 200 milliseconds.
0203 Clutch Current Delay Fault - If 10% current is
present in the clutch coil when CR1 is de-
energized, a clutch current delay fault will be
issued.
0206 Press Movement in Wrong Direction Fault -
Press movement detected to be in a direction
opposite of that commanded, based upon
degrees of opposite rotation after enabled. The
number of degrees of rotation before causing
this fault is adjustable from 0 to 10 degrees at
the keypad. Set for minimum degrees without
causing nuisance tripping.
0207 Loss of Line Fault - Loss of an input phase or
greater than 20% drop in ac line for a period of
100 milliseconds.
0208 Enable Without Clutch Contactor ON Fault -
Clutch contactor ON is not present within 170
milliseconds of receiving enable (see Fault No.
0226).
0209 Clutch Contactor ON After Clutch ON is De-
energized Fault - Clutch contactor ON input
signal is present 100 milliseconds after clutch
ON output is de-energized.
0210 Missing Enable Fault - The two enable signals
are not coincident for more than 170
milliseconds.
0211 Inch + Micro Inch + Enable Fault - The presence
of an inch and micro inch command with enable.
0212 Reverse Command Fault - The presence of a
reverse command without an inch or a micro
inch command.
0220 Enable Present After Normal Stop Fault - Enable
present 450 milliseconds after a normal stop is
issued.
0221 Clutch Contactor Not ON In Test Mode Fault -
Clutch contactor ON signal, not present while in
clutch test mode.
0222 Press Movement in Test Mode Fault - Press
movement of 2 degrees detected while in test
mode.
0223 Enable Present In Test Mode Fault - Enable
signal present while in test node.
0224 Stop-On-Top Not Performed Fault - The stop-
on-top function failed to stop the press in 1.5
times the cycle period.
0225 Clutch Contactor ON Removed without
removing enable fault or clutch contactor
removed during the 450 milliseconds required
before de-energizing the clutch contactor.
0226 Clutch Contactor ON Without Enable Fault -
Enable not present within 170 milliseconds of
receiving clutch contactor ON (see Fault No.
0208).
0227 Enable Before Cool Down Expired Fault -
Enabling the CES controller before the cool
down time period has expired following a clutch
current or a brake current fault.