Lenze TCF Series Manual de usuario descargar pdf (Pagina 64)

17.2 CHANGING THE SPEED REFERENCE SOURCE

When the speed/torque source is changed while the drive is running, the display will ﬂash

the message for the new speed/torque source to indicate that the new source is active. Also,

if the drive is being controlled from a speed/torque source other than the s and t buttons

(0-10 VDC, 4-20 mA, etc), and one of the s or t buttons is pressed, the display will ﬂash the

present speed source message to indicate that the s and t buttons are invalid.

NOTE

If the drive is in a STOP state, and the speed reference is changed, the

display will not show the message for the new reference source. It will only

do so when the drive is running.

Example 1: The drive is running and the present speed source is the keypad. TB-13A is

programmed to select a 4-20 mA signal as the speed source. When TB-13A is closed to

TB-2, the display will ﬂash “EI” to indicate that the speed source has changed to the 4-20

mA signal. If the contact between TB-13A and TB-2 is opened, the display will ﬂash “CP” to

indicate that the speed source has changed back to the s and t buttons.

Example 2: The speed source is a 0-10 VDC signal. If the s or t button is pushed, the

display will ﬂash “EU” to indicate that the present speed source is the 0-10 VDC signal and

that the s and t buttons are invalid.

Refer to the table below for the possible speed/torque reference source displays:

SPEED SOURCE DISPLAYS

DISPLAY DESCRIPTION

CP / t CP

CONTROL

PAD

Speed/torque is set using the s and t buttons on the front of the drive.

EI / t EI

EXTERNAL

CURRENT

Speed/torque source is a 4-20 mA signal wired to TB-25 and TB-2.

EU / t EU

EXTERNAL

VOLTAGE

Speed/torque source is a 0-10 VDC signal wired to TB-5 and TB-2.

JG JOG

The drive is in Jog mode, and the speed is set by Preset Speed #2

(Parameter 32).

OP MOP

(Motor Operated Pot) Contacts wired to TB-13B and TB-13C are used

to increase and decrease the drive speed.

Pr1 - Pr7

PRESET

SPEEDS #1-7

Speed is set by the indicated Preset Speed (Parameters 31-37).

NOTE

The speed source displays will ﬂash when the speed reference source is

changed while the drive is running to indicate that the new speed reference

source is active.

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Lenze TCF Series Manual de usuario Pagina 64

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