22 SF01U
11.3 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 13C14 15 2
STOP
COMMON
0-10 VDC INPUT
COMMON
RUN FWD
RUN REV
0-10 VDC or 4-20 mA SELECT
COMMON
4-20 mA INPUT
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.
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