Lenze SCF frequency inverter - Manual (Page 26)

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Lenze 13466146 EDBSF01 v24 EN
3 Installation
3.6.4 Three-Wire Start/Stop Control
Shown below is the wiring diagram for a typical three-wire start/stop control scheme, using
momentary contacts (such as pushbuttons) for START and STOP commands.
MOMENTARY STOP
CONTACT
1 2 5 6 12 TXA TXB 2 13A 13B 13C 14 15 2
STO
P
C
O
MM
ON
0-10 VDC
IN
PU
T
C
O
MM
ON
FOR
W
AR
D
RE
VER
SE
0-10
VDC or 4-20 mA SELECT
C
O
MM
ON
4-20 mA I
N
PU
T
11 25 31 30
MOMENTARY
START CONTACT
The TB-2 terminals are internally connected to each other
NOTE
• Momentarily close TB-12 to TB-2 to START the drive, and momentarily open TB-1
to TB-2 to STOP the drive.
• If reverse direction is also required, ROTATION DIRECTION (Parameter 17) must
be set to FORWARD AND REVERSE (02), and TB-13A (Parameter 10) must be
set to START REVERSE (06). If the FWD/REV switch is changed while the drive is
running, the drive will not change direction until the START button is pushed. If
reverse direction is not required, the other side of the START pushbutton must
be wired directly to TB-12.
• For 0-10 VDC or 4-20 mA speed control, use one of the following methods:
- Program one of the TB-13 terminals (13A, 13B, or 13C) for 0-10 VDC (02) or 4-20
mA (03). When that TB-13 terminal is closed to TB-2, the drive will respond
to the selected speed reference signal. If that TB-13 terminal is not closed to
TB-2, the drive will respond to the speed control source selected in Parameter
05 - STANDARD SPEED SOURCE. This method must be used if it is necessary to
toggle between two speed sources.
- Program Parameter 05 - STANDARD SPEED 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.