Lenze TCF Series - Manual (Page 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 .
60