Red-lion MDC User Manual download pdf (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

0to98

Operator Accessible Functions,

Programming Loop Accessible via

Code number.

ON INACTIVE or Not

Programmed for

PGM.DIS

Operator Accessible Functions,

Programming Loop Disabled.

ON ACTIVE N/A

No Accessible Functions,

Programming Disabled.

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Red-lion MDC User Manual Page 12

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