Instruction manual

23
The link with the DMR is a 26-line ribbon cable. This
cable also connects to the interface indicator board;
however, this board is not required in order to run. A
separate 8-pin cable, PL-Fault, connects to the DMR
and converts various logic state conditions. Six other
connections that are used are as follows:
PL-LEM - A 6-pin connection to the current sensors.
PL-PS - A 7-pin cable. Five of the wires bring the power
supply voltages to the logic board with two of the wires
looped through to the DMR.
PL-FP - Connections to the front panel terminals.
PL-MTR - Connections to the meters and CR2 relay.
PL-CLUTCH A 16-pin dip ribbon connector to the clutch
gate driver board.
PL-BRAKE - A 16-pin dip connection to the brake gate
driver.
There are only six adjustments to the logic board, and
they are as follows: Clutch Current Limit, Clutch Current
Damping, Clutch Velocity Damping, Brake Current Limit,
Brake Current Damping and Brake Velocity Damping.
The clutch and brake are operated similarly, but
separately, with each having its own error and control
amplifiers. Therefore, in the following discussions where
reference is made only to the clutch, it will be equally
applicable to the brake; when there are differences,
specific references are made to the brake.
LOGIC POWER SUPPLY INPUTS
Power supply voltages connected at PL-PS are as
follows: +5 V, +12 V, -12 V, +24 V, power COM
(common) and signal COM. C20 through C27 provide
noise filtering. ZD1 is a precision voltage reference
zener diode that provides a stable +2.5 V for the on-
board comparators. Test points J10 through J15 are
available for checking the supply voltages: J10 = +5 V;
J11 = +2.5 V; J12 = +12 V; J13 = COM; J14 +24 V; J15
= -12 V. The +12 V and COM are routed to the interface
indicator board through the 26-pin logic to DMR-23 and
DMR-26. Dual inputs for + 12 V, -12 V and signal COM
are for continuation of wiring to the DMR.
LOGIC CONTROL LINES
Coordination between clutch and brake is accomplished
by the comparator U1-C, which compares the reference
input from the DMR and speed feedback. It prevents the
clutch and brake from being energized simultaneously,
in order to prevent overlap, by producing a high on the
control line. Any high on the control line inhibits
further operation.
A high on the control line can also be caused by other
factors. For the clutch, it can be caused by the absence
of a run signal input; clutch contactor not pulled in; DMR
inhibit signal present; 120% rated clutch coil current; or
85% rated line voltage or missing phase. For the brake,
it can be caused by the brake contactor not being pulled
in; 120% rated brake coil current; or 85% rated line
voltage or missing phase.
LEM CURRENT FEEDBACK AMPLIFIERS
Both clutch and brake Hall effect current feedback
transducers are connected to the logic board at PL-LEM
(on the Logic PCB). The values of R5 and the number
of LEM turns are selected at the factory to produce an
output of approximately 7 V at rated current. The same
is true for the value of R131 (also on the Logic PCB) and
its related number of LEM turns. This is necessary to
avoid having to change over-current trip points and other
current dependent scalers for different size press drives.
See Table 3-1 for values normally specified for each size
press drive.
LEM Current Feedback Values Table 3-1
Mechanical I (CL)
LEM R5
Unit I (BK) nT R131
49-63 180 A 1 28.7K
90 A 2 28.7K
49-42 120 A 1 60.4K
60 A 2 60.4K
37-42 96 A 1 84.5K
48 A 2 84.5K
37-32 72 A 2 124.0K
48 A 2 84.5K
37-21 48 A 2 84.5K
24 A 4 84.5K
FAULT PRIORITY ENCODER
Various conditions have been selected to be monitored
as faults. The faults, in order of priority, are listed in
Table 3-3 under "Fault Indicator."
In order to read these faults accurately, a PWM Fault
Indicator board, No. 15-775-2, must be plugged into the
corresponding header on the DMR.
FAULT CODES
A list of all fault numbers is included in Table 3-3 and 3-4
to serve as a quick reference during operation. For a
more complete explanation of these numbers, refer to
Section 2. The only stop main motor fault number is
0101. Stop now fault numbers range from 0202 through
0228. Stop-on-top fault numbers range from 0313
through 0329.
CES CONTROLLER PARAMETERS
Parameter values are set either from the keypad or
through the serial interface. The last value set from
either method is maintained in nonvolatile memory.
Keypad parameters are set by entering the parameter
number through the keypad and incrementing the value