41
15.3 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. Also shown is the wiring for a 0-10 VDC or 4-20 mA speed reference
signal.
NOTES:
1. Momentarily close TB-12A to TB-2 to START, and momentarily open TB-1
to TB-2 to STOP.
2. If REVERSE direction is required, ROTATION must be set to FWD&REV,
and TB-13C must be set to START REVERSE (refer to Parameters: 27 -
ROTATION, and 49 - TB13C).
3. Program TB-13A, 13B, or 13C to select the appropriate speed reference signal
that will control the drive speed (refer to Parameters 47, 48, and 49). When
that TB-13 terminal is closed to TB-2, the drive will respond to the selected
speed reference signal. In the diagram above, TB-13A is programmed to select
either a 0-10 VDC or 4-20 mA signal.
4. If the contact closure is not made between TB-13A and TB-2 to select a speed
reference, the drive will default to MANUAL speed control, which is
determined by Parameter 29 - MANUAL.
1 2 5A 5B 6 10A
12A
RXA TXB10B 2 13A 13B 13C
13D 14 15
2
16 17 18
STOP
CIRCUIT COMMON
0-10 VDC INPUT
4-20 mA INPUT
START FORWARD
CIRCUIT COMMON
MOMENTARY
STOP
CONTACT
MOMENTARY
START
CONTACT
START REVERSE
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