11 .4 three-wire start/stop control – Lenze TCF Series User Manual

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11 .4

THREE-WIRE START/STOP CONTROL

This wiring diagram shows a typical three-wire start/stop control scheme, using momentary
contacts (such as push-buttons) for START and STOP commands, and a selector switch to
select rotation direction .

MOMENTARY

STOP CONTACT

SIGNAL

COMMON

0-10

VDC

INPUT

DIGITAL

INPUT

REFERENCE

START

4-20

mA

INPUT

1

2

5 6

14

TXA TXB

4

13A 13B 13C

4

13D

25

11

15

30

2

SIGNAL

COMMON

(See Note 3)

START

FORWARD

MOMENTARY

START CONTACT

(See Note 3)

FWD

REV

START

REVERSE

NOTES
• Momentarily close TB-13A or TB-13D to TB-4 to START the drive in the

desired direction and momentarily open TB-1 to TB-4 to STOP the drive .

• For this configuration, ROTATION DIRECTION (Parameter 17) must be

set to FORWARD AND REVERSE (02), TB-13A (Parameter 10) must be
set to START REVERSE (07), and TB-13D (Parameter 49) must be set to
START FORWARD (05) .
If reverse direction is not required, wire the START push-button
directly between TB-4 and TB-13D, and do not program TB-13A for
START REVERSE.

• For 0-10 VDC or 4-20 mA speed control, use one of the following methods:

-

Program Parameter 05 - STANDARD REFERENCE SOURCE for
0-10 VDC (03) or 4-20 mA (04) . This method is preferable if only one
speed source is required, as this method leaves the TB-13 terminals
free to be used for other functions .

-

Program one of the TB-13 terminals (13B or 13C are available in
this example) for 0-10 VDC (02) or 4-20 mA (03) . When that TB-13
terminal is closed to TB-4, the drive will respond to the selected
speed reference signal . If that TB-13 terminal is not closed to TB-
4, the drive will respond to the speed control source selected in
Parameter 05 - STANDARD REFERENCE SOURCE .

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