AC Tech SCF SERIES Instructions - Page 2

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SETTING UP THE SCF DRIVE

There are three possible control scenarios when using the remote

keypad:

1. The remote keypad is used for Start/Stop control, Forward/Reverse

selection, programming, and monitoring.

2. The remote keypad is used for programming and monitoring, but

the drive's terminal strip is used for Start/Stop control and Forward/

Reverse selection.

3. The remote keypad is used for programming and monitoring, while

Start/Stop control and Forward/Reverse selection can be toggled

between the remote keypad and the drive's terminal strip.

In all of the above scenarios, speed is controlled from the remote keypad

unless another speed reference source is selected.

Note 1:

The STOP key on the remote keypad will work even if the terminal strip

is used for Start/Stop control

1. REMOTE KEYPAD TO PROGRAM, MONITOR AND CONTROL

a. Set Parameter 14 (CONTROL) to "02" (REMOTE KEYPAD ONLY).

b. Install a jumper between terminal TB-1 and TB-2 on the drive's

terminal strip.

2. REMOTE KEYPAD TO PROGRAM AND MONITOR, AND

TERMINAL STRIP TO CONTROL.

a. Set Parameter 14 (CONTROL) to "03" (TERMINAL STRIP OR

REMOTE KEYPAD).

b. Wire the Start/Stop and Forward/Reverse circuits to the drive's

terminal strip according to the SCF manual.

REMOTE KEYPAD FUNCTIONS

The M key and the s and t keys on the remote keypad function the

same as the Mode button and the s and t buttons on the drive. The

other remote keypad functions are described below:

Reverse/Forward key: Selects Forward or Reverse direction.

The R/F key is only active if Parameter 17 - ROTATION is

R F

set to "2" (FORWARD AND REVERSE).

When the R/F key is pressed, the symbol for the opposite

direction will blink on the display. Press the M key within

four seconds to confirm the rotation change.

Below are the display symbols used to indicate direction:

FORWARD

RUN key: Press RUN to Start the drive. The RUN key is

only active if the remote keypad is selected as the Start/Stop

control source.

RUN

STOP key: Press STOP to Stop the drive. The STOP key

is active whenever the remote keypad is operational, even

if the remote keypad is only used for programming and

STOP

monitoring.

WARNING!

If the remote keypad display is totally blank or is displaying a "JF" fault,

the STOP key WILL NOT stop the drive. The remote keypad must be

operational in order for the STOP key to be active

REVERSE

3. TOGGLE CONTROL BETWEEN REMOTE KEYPAD AND

TERMINAL STRIP

a. Set Parameter 14 (CONTROL) to "03" (TERMINAL STRIP OR

REMOTE KEYPAD).

b. Choose either Terminal 13A or 13C on the drive as the input that will

toggle between remote keypad control and terminal strip control.

To use TB-13A, set Parameter 10 (TB-13A FUNCTION SELECT) to

"08" (REMOTE KEYPAD).

To use TB-13C, set Parameter 12 (TB-13C FUNCTION SELECT) to

"07" (REMOTE KEYPAD).

c. Wire a selector switch or relay contact between TB-13A or TB-13C

(whichever was programmed for REMOTE KEYPAD in Step b above)

and TB-2 on the drive's terminal strip.

d. Wire the Start/Stop and Forward/Reverse circuits to the drive's

terminal strip according to the SCF manual.

If a 2-wire Start/Stop circuit is required, use the Alternate 2- Wire

circuit described in Section 11.3 of the SCF manual.

To select the Remote Keypad as the control source, close TB-13A or TB-

13C (whichever was programmed for REMOTE KEYPAD) to TB-2.

To select the terminal strip as the control source, open TB-13A or TB-13C

with respect to TB-2.

Note 2:

When the remote keypad is selected for Start/Stop control, terminal

TB-1 on the SCF drive must be closed to TB-2 to allow the drive to run.

TB-1 is a Stop input and it is always active. If it is open with respect to

TB-2, the drive will not run.

TROUBLESHOOTING

CONDITION / DISPLAY

Remote Keypad display

Parameter 14 - CONTROL is set to "01"

is blank.

(TERMINAL STRIP ONLY). See Section 5.

The Remote Keypad is not wired correctly

to the drive. See Section 4.

Remote Keypad and/

"JF" typically indicates a communication

or SCF drive displays

problem. Check for proper wiring between

"JF".

the remote keypad and the drive. A "JF"

fault can also occur due of the following:

- Attempting to start the drive from the

Remote Keypad and TB-1 is not closed to

TB-2. See NOTE 2 in Section 5

- Attempting to power the Remote Keypad

and an auxiliary relay from TB-11. See

NOTE 2 in Section 4.

The RUN key does not

To start the drive using the RUN key, the

work to start the drive.

Remote Keypad must be selected as the

control source, and TB-1 must be closed to

TB-2 on the drive's terminal strip.

The R/F key does not

To use the R/F key to change rotation

work to change rotation

direction, the Remote Keypad must be

direction.

selected as the control source, Parameter

17 - ROTATION must be set to "02"

(FORWARD AND REVERSE), and the M

key must be pressed with 4 seconds to

confirm the change. See Section 6.

(KF01G)

POSSIBLE CAUSES