Lenze SCD Series User Manual

Page 23

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.

NOTES:

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-4 to RUN in forward direction, and open TB-12 to TB-4 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-4 to RUN in REVERSE, and open TB-
13A to TB-4 to STOP. If TB-12 and TB-13A are both closed to TB-4, 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-4, the drive will respond to the selected speed
reference signal. If that TB-13 terminal is not closed to TB-4, 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 reference 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 reference source is required, as this method
leaves the TB-13 terminals free to be used for other functions.

STOP

DIGITAL INPUT REF.

0-10 VDC or 4-20 mA INPUT

RUN FWD

COMMON

RUN REV

0-10 VDC or 4-20 mA SELECT

4 5/25 11

CAN+ V+

13B 13C 15

13A

V-

SHLD

CAN-

FWD

REV

DEVICENET

INTERFACE

Removable Connector
(Refer to Appendix B)