Lenze SCF frequency inverter - Manual (Page 25)

Lenze 13466146 EDBSF01 v24 EN
25
Installation 3
3.6.3 Alternate Two-Wire Start/Stop Control
Shown below is the wiring diagram for an alternate two-wire start/stop control scheme, using one
maintained contact for RUN FORWARD and another maintained contact for RUN REVERSE.
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
RU
N F
WD
RU
N R
EV
0-10
VDC or 4-20 mA SELECT
C
O
MM
ON
4-20 mA I
N
PU
T
11 25 31 30
The TB-2 terminals are internally connected to each other
NOTE
• For this control scheme, TB-13A MUST be set to RUN REVERSE (05), even if
REVERSE direction is not required. Refer to Parameter 10 - TB13A FUNCTION
• Close TB-12 to TB-2 to RUN, and open TB-12 to TB-2 to STOP
• If reverse direction is also required, ROTATION DIRECTION (Parameter 17) must
be set to FORWARD AND REVERSE (02). Close TB-13A to TB-2 to RUN in REVERSE,
and open TB-13A to TB-2 to STOP. If TB-12 and TB-13A are closed to TB-2, the
drive will STOP
• 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.