Lenze MC3000 Series - Manual (Page 39)

13435743_EDBM301_v14 .0 35
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
ST
OP
CIR
CUIT C
OMMON
0-10 VDC
INPUT
4-20 mA INPUT CIR
CUIT C
OMMON
ST
AR
T FOR
W
ARD
MOMENTARY
STOP CONTACT
1 2 5A 5B 6 10A 12A RXA TXB 10B 2 13A 13B 13C 13D 14 15 2
16 17 18
ST
AR
T RE
VERSE
0-10 VDC or 4-20 mA
SELECT (see Note 3)
FWD REV
(see Note 2)
MOMENTARY
START CONTACT
The TB-2 terminals are internally tied together
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, TB-13C must be set to START REVERSE
(refer to Parameter 49 - TB13C) . If REVERSE is not required, connect the other
side of the start button to TB-12A .
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 keypad speed control .