Table of Contents
Advertisement
Function: Option/Inv Sel 2
Setting: 36
The Option/Inv Selection function allows the user to switch the source of the Run and speed command between the Drive's
terminals and optional communication card. When a digital input is programmed for the Option/Inv Selection 2 function
(H1-0x= 36) that input will function as follows:
Option/Inv Function Input Status
To switch the command source between the option card and the terminals be sure to program the following parameters:
•
Set b1-01 (Frequency Reference Selection) to 1 (Terminals).
•
Set b1-02 (Run Command Selection) to 1 (Terminals).
•
Set H1-0x (Input Terminal Function Selection) to 36.
IMPORTANT
Function: Motor Pre-heat
Setting: 60
In order to prevent condensation on the motor windings, a DC current can be circulated through the windings. The heat
produced by the current in the windings will prevent the moisture from condensation on the wire. Motor pre-heating can only
be initiated by closing a digital input programmed as a Motor Pre-heat input (H1-0x= 60). The level of the DC current used by
the Motor Pre-heat function is determined by parameter b2-09.
A Run input will be given priority over a Motor Pre-heat input. When the Run command is removed, if the Motor Pre-heat
input is still closed, the motor pre-heating will resume.
Function: Speed Search 1
Setting: 61
Function: Speed Search 2
Setting: 62
Function: Speed Search 3
Setting: 64
Table 13 Programming Choices
CLOSED
OPEN
Switching the Reference and RUN sources can only be done while the Drive is stopped.
Setting of b3-01
0
1
2
3
Run and Speed Command Source
From the Communications Option Card
From the control circuit and analog input terminals
Table 14 Digital Input Functions
Speed Search Method Used for Multi-function inputs
Speed Estimation
Current Detection
Programming 58
Advertisement
Chapters
Table of Contents
