Lenze TCF Series User Manual

Page 43

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05 FAULT LOCKOUT: Closes when input power is applied . Opens if three restart

attempts are unsuccessful, or if input power is removed .

06 AT SET SPEED: Closes if the drive is within + 0 .5 Hz of the speed setpoint .
07 ABOVE PRESET SPEED #3: Closes if the output frequency exceeds the value

in PRESET SPEED #3 . Opens if the output frequency is equal to or less than
the value in PRESET SPEED #3 (Parameter 33) .

08 CURRENT LIMIT: Closes if the output current exceeds the CURRENT LIMIT

setting . Opens if the output current is equal to or less than CURRENT LIMIT
(refer to Parameter 25) .

09 AUTOMATIC SPEED MODE: Closes if an AUTOMATIC (terminal strip) speed

reference is selected using TB-13A, 13B, 13C, or 13D . Opens if a STANDARD
(Parameter 5) speed reference is active .

10 REVERSE: Closes when reverse rotation is active . Opens when forward rotation

is active . (Refer to Parameter 17 - ROTATION DIRECTION) .

11 DYNAMIC BRAKING: Used to "trigger" the optional external Dynamic Braking

module . Refer to the instructions included with the Dynamic Braking option .

P07

BIPOLAR REFERENCE SELECTION

This parameter is used to enable the -10 to +10 VDC bipolar speed reference input (cannot
be used as a torque reference) . Refer to Section 11 .6 for -10 to +10 VDC wiring examples .

01 DISABLE: The drive will operate normally and respond to the speed reference

selected in Parameter 5 - STANDARD REFERENCE SOURCE, or selected

using terminals 13A, 13B, 13C, and 13D . Refer to Section 10 .6 for more

information on speed reference selection .

02 ENABLE: The drive will only respond to a -10 to +10 VDC bipolar signal (all

other speed references are disabled) .
From +0 .1 to +10 VDC the drive will operate in the Forward direction, with the

maximum speed determined by SPEED AT MAX SIGNAL (Parameter 46) or

MAXIMUM FREQUENCY (Parameter 24), whichever is lower .
From -0 .1 to -10 VDC, the drive will operate in the Reverse direction, with the

maximum speed determined by SPEED AT MIN SIGNAL (Parameter 45) or

MAXIMUM FREQUENCY (Parameter 24), whichever is lower .

NOTE
• When setting 02 is selected, Parameter 17 - ROTATION must be set to

FORWARD AND REVERSE (02) for the bipolar speed reference to work
properly .

• When setting 02 is selected, the RUN and START functions on terminals

TB-13A and TB-13D can only be used to start the drive; they will no longer
select direction (direction is only determined by the polarity of the -10 to
+10 VDC signal) . However, TB-13B and TB-13C can still be used for JOG
FORWARD and JOG REVERSE functions .

Refer to Parameters 10, 11, 12, and 49

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