Red Lion MDC - Manual (Page 12)

DEDICATED CONTROL INPUT FUNCTIONS
The Motor Drive has inputs dedicated to certain primary operations. These
functions are as follows:
RUN
A momentary closure to common on the RUN input causes the MDC to
accelerate the motor from STOP mode to the current speed setpoint using the
current ramp rate.
R-STOP
A momentary open from common on the R-STOP input causes the MDC to
decelerate the motor from its current speed to STOP mode using the current
ramp rate.
F-STOP
A momentary open from common on the F-STOP input causes the MDC to
execute a fast stop, taking the analog Drive Output signal immediately to zero
volts. Motor deceleration is limited only by the motor drive system. This is an
emergency stop function. The Drive Enable Output goes immediately to its
inactive state and may be used to engage braking or remove power from the
motor via an external relay.
JOG
The jog function only operates from the STOP mode. A sustained closure
from the JOG input to common causes the MDC to accelerate the motor to the
jog speed setpoint using the jog ramp rate. The motor remains at the jog speed
until the closure is removed, at which point the MDC executes an F-STOP.
OPEN LOOP
A maintained closure to common on this input causes the MDC to run open
loop. The error correction value, Trim, is set to zero and speed is not
regulated. A momentary closure on this input can be used as a Trim reset, to
momentarily reset the Trim value to zero.
Note: Feedback Loss Detection is automatically disabled in Open Loop Mode.
FRONT PANEL ACCESSIBLE PROGRAMMING
The MDC has several ways to limit the programming of parameters in the
User Setpoints Module and the Programming Module. The Operator Access
Menu, in the Programming Module, can be used with the Program Disable
(PGM. DIS) DIP switch or an external User Input to limit programming of
parameters in the User Setpoints Module.
To enter the Programming Module, a program code number may need to be
entered, depending on the Program Disable Function setting. Only external
User Inputs can be selected for program disable. The default value for the
program code number is “00”, but should be programmed differently (See
Program Security Menu). This helps prevent inadvertent entry into the unit’s
programming modules. When PROGRAM MODE is displayed and then the
SEL key is pressed, the PRO.CODE prompt will be viewed. At this time, the
Code number must be entered using the arrow keys. After selecting the proper
code number and pressing the Enter key, the operator advances into the
Programming Module. If the wrong code number is entered, the operator will
not be able to enter the Programming Module and the unit returns to the
PROGRAM MODE display. The following list describes the possible
program disabling functions.
PGM.DIS
SWITCH
USER INPUT
TERMINAL
PROGRAM
CODE
NUMBER
ACTION
OFF INACTIVE or Not
Programmed for
PGM.DIS
N/A Complete programming enabled.
OFF ACTIVE 0 to 98 Operator Accessible Functions,
Programming Loop Accessible via
Code number.
OFF ACTIVE 99 Operator Accessible Functions,
Programming Loop Disabled.
ON INACTIVE or Not
Programmed for
PGM.DIS
0 to 98 Operator Accessible Functions,
Programming Loop Accessible via
Code number.
ON INACTIVE or Not
Programmed for
PGM.DIS
99 Operator Accessible Functions,
Programming Loop Disabled.
ON ACTIVE N/A No Accessible Functions,
Programming Disabled.
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