Lenze MC1000 Series - Manual (Page 36)

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14.2.5 SPEED REFERENCE SIGNALS
The drive allows for three analog speed reference inputs: a speed potentiometer
(10,000 Ohm), 0-10 VDC, or 4-20 mA.
SPEED POT
Connect the wiper to terminal TB-5A, and connect the
high and low end leads to terminals TB-6 and TB-2,
respectively.
0-10 VDC Wire the positive to terminal TB-5A and the negative to
terminal TB-2. TB-5A input impedance is 200 kilohms.
4-20 mA Wire the positive to terminal TB-5B and the negative to
terminal TB-2. TB-5B input impedance is 100 ohms.
14.2.6 SPEED REFERENCE SELECTION
AUTO/MAN vs. LOCAL/REMOTE
In the MC Series drive, AUTO/MAN refers to speed control, and LOCAL/REMOTE
refers to START/STOP control. AUTOMATIC or MANUAL speed control selection
is affected by whether the drive is in LOCAL or REMOTE mode.
In LOCAL mode (keypad start/stop control), AUTOMATIC and MANUAL speed
control is selected using Parameter 28 - AUTO/MAN. When AUTO/MAN is set
to BOTH, the AUTO/MAN button on the keypad is active and is used to toggle
between MANUAL (keypad or speed pot) and AUTOMATIC (0-10 VDC, 4-20 mA,
or preset speeds) speed control. When set to MANUAL, speed control is governed
by Parameter 29 - MANUAL, which selects either KEYPAD or 0-10 VDC (speed
pot). When set to AUTOMATIC, one of the TB-13 input selects must be set to the
desired speed reference, and that terminal must be closed to TB-2. The drive will
then respond to the automatic speed reference. If one of the TB-13 input selects
is set for a speed reference, and the contact closure is not made to TB-2, speed
control will remain in AUTO mode, but the drive will respond to the keypad or speed
pot, depending on Parameter 29 - MANUAL. Therefore, if the Form C relay or open-
collector outputs are set to indicate AUTO/MAN mode, they will still indicate AUTO
mode.In REMOTE mode (terminal strip start/stop control), speed control is only
selected using the TB-13 input selects. For AUTOMATIC speed control, one of the
TB-13 input selects must be set to the desired speed reference, and that terminal
must be closed to TB-2. The drive will then respond to the automatic speed reference.
If none of the TB-13 input selects are closed to TB-2, speed control will default to
MANUAL mode, and the drive will respond to the keypad or speed pot, depending
on Parameter 29 - MANUAL. This will cause the Form C relay or open-collector
outputs to indicate MANUAL mode if set to indicate AUTO/MAN mode.
0 - 10 VDC and 4 - 20 mA INPUT SIGNALS
TB-13A, TB-13B, and TB-13C can all be programmed to select 0-10 VDC or 4-20
mA input.
PRESET SPEEDS
TB-13A can be programmed to select SPEED #1, TB-13B to select SPEED #2, and
TB-13C to select SPEED #3. Closing any two of these terminals to TB-2 will select
SPEED #4. Refer to Parameters 1-4: SPEED #1 - #4 in Section 18 - DESCRIPTION
OF PARAMETERS.