Lenze SCF SERIES User Manual

SCF SERIES REMOTE KEYPAD INSTRUCTIONS

(Manual Number: KF01G)

The SCF Series Remote Keypad option (844-200) allows the SCF Series
drive to be programmed and controlled from up to one hundred feet away.
When properly mounted, the remote keypad is rated NEMA 4X.

In addition to the functions available on the front of the SCF drive, the
remote keypad has Start/Stop and Forward/Reverse functions.

2. SCF REMOTE KEYPAD TEMPLATE

NOTE: Verify dimensions on printed page before using as a template.

Hold this page against the panel where the remote keypad is to be
mounted, and use a center punch to mark the location of the three holes.
The dotted line is the outline of the remote keypad.

1/8” hole

UP

WARNING!

If OEM mode is selected (using Parameter 48), and if the OEM Default
setting for Parameter 14 and/or 15 is “01”, the remote keypad will
be disabled, and the STOP key WILL NOT work. Refer to the SCF
Installation and Operation Manual for information on OEM Default
settings.

1. PARTS LIST

The SCF Remote Keypad kit includes the following parts:
(1) Remote Keypad (1) Gasket
(2) Self-tapping Mounting Screws (1) Instruction Sheet
(1) Eight foot cable

Note:

The supplied cable can only be used for distances up to 8 feet in low­noise environments. For distances up to 100 feet, or in high-noise
environments, use Belden 9842, Carol C4842, or equivalent (24 gauge
minimum) wire only.

3. MOUNTING THE REMOTE KEYPAD

The diagram below illustrates how to mount the remote keypad to a panel.
Use the template in Section 2 to mark the location of the mounting holes
on the panel.

PANEL

MOUNTING
SCREWS

1.32”

1.57”

1.38” to 1.5” hole

2.19”

Max Depth = 0.72”

4. WIRING CONNECTIONS

WARNING!

Improper wiring may result in damage to the Remote Keypad. Keep
the remote keypad cable away from power wiring.
The Belden and Carol cables specified consist of two twisted pairs. Make
sure one twisted pair is used for power and the other is used for serial
communications. Do not mix connections between twisted pairs

Note 1:

The supplied cable can be used for distances up to 8 feet in low­noise environments. For distances up to 100 feet, or in high-noise
environments, use Belden 9842, Carol C4842, or equivalent (24 gauge
minimum) wire only.

3.38”

1/8” hole

GASKET

11

2

JUMPER

(See NOTE 2

in Section 5)

Note 2:

TB-11 can supply up to 50 mA of
po wer , and the remo te ke ypa d
requires 40 mA. To drive auxiliary
re la ys us in g the ope n- col lec to r
outputs, an external power supply
is required.

2

Cable included with kit
does not have a shield

REMOTE
KEYPAD

Lenze Americas • 630 Douglas Street • Uxbridge, MA 01569 • USA

Sales [phone] • Service [phone] • www.lenzeamericas.com

SCF TERMINAL STRIP

REMOTE KEYPAD

TXA

UP

TXA

TXB

11
2

(BACK VIEW)

13360081

TXB1

KF01G

5. 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. RE M OTE KE YPAD TO PROG R AM AND MONIT O R, 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.

3. TO G GLE CO N TROL BE T WEE N RE MOTE KE YPAD AN D
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 TB­13C (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.

6. 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.

R F

RUN

STOP

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

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.

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
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

7. TROUBLESHOOTING

CONDITION / DISPLAY POSSIBLE CAUSES

Remote Keypad display
is blank.

Parameter 14 - CONTROL is set to “01”
(TERMINAL STRIP ONLY). See Section 5.

The Remote Keypad is not wired correctly
to the drive. See Section 4.

Remote Keypad and/
or SCF drive displays
“JF”.

“JF” typically indicates a communication
problem. Check for proper wiring between
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
work to start the drive.

To start the drive using the RUN key, the
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
work to change rotation
direction.

To use the R/F key to change rotation
direction, the Remote Keypad must be
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.

(13360081)

Lenze Americas • 630 Douglas Street • Uxbridge, MA 01569 • USA

Sales [phone] • Service [phone] • www.lenzeamericas.com

KF01G

13360081