VLT
®
Series 3500
43
Example 9:
Remote Hand/Off/Auto control is desired.
The Local/Hand, and Remote/Hand switches are to
provide these functions. The “Hand” reference is a 0 to
10 V signal from a potentiometer. The “Auto” signal is a 4
to 20 mA reference from a set point controller.
The following must be programmed:
Function:
Parameter #
Parameter Value
Data Value #
H-O-A position
003
EXTERNAL HOA
[2]
Activation of Hand
400
EXT. HOA HAND
[5]
Activation of Auto
401
EXT. HOA AUTO
[7]
Pulse Start Hand
405
LATCH ST. HAND
[4]
Auto reference
413
4 to 20 mA
[2]
Hand reference
420
VOLTAGE
[0]
NOTE:
A shield for control wires is to be connected in
accordance with the installation instructions.
All settings are based on factory settings.
Be sure to check the motor data settings (parameters
104, 105 and 107, or the Quick Setup menu items 1, 2
and 3). They must be set based upon the actual motor
used.
1 = Activation of Local/Hand mode
2 = Activation of Remote/ Auto mode
3 = Stop
4 = Start Auto mode
5 = Pulse Start Hand mode
6 = Auto mode reference, 4 to 20 mA
7 = Hand mode reference, 0 to 10 V
External safety interlocks can be connected between
terminals 12 and 27.
