YASKAWA E7U Programming Manual page 54

Industrial hvac drive
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Function: Option/Inv Selection 1
Setting: 2
The Option/Inv Selection function allows the user to select the source for the Run and speed commands between either the
Drive's terminals or an optional communication card. When a digital input is programmed for the Option/Inv Selection
function (H1-0x= 2) that input will function as follows:
Option/Inv Selection 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 2.
IMPORTANT
Function: Multi-step Ref 1
Setting: 3
Function: Multi-step Ref 2
Setting: 4
The Drive can be programmed to step through four preset speeds and a jog. It is also possible to mix in the analog inputs as
speed references that can be chosen in place of the first and second preset frequency references. The selection of which preset
speed will be the active speed command is determined by the status of the digital inputs set for Multi-step Ref 1 (H1-0x= 3)
and Multi-step Ref 2 (H1-0x= 4). Changing the active speed command via the Multi-step References can be done while the
Drive is running.
The following table details which reference is active based on the status of the Multi-step Ref 1 and Multi-step Ref 2 inputs:
Terminal
Programmed
Preset Speed
as Multi-step
Reference 1
1
OFF
2
ON
3
OFF
4
ON
5
*
The Jog Frequency input is given priority over the multi-step speeds.
Table 10 Digital Input Functions
CLOSED
OPEN
Switching between the different Reference and Run sources can only be done while the Drive is stopped.
Table 11 Digital Input Functions
Terminal
Programmed
as Multi-step
Reference 2
OFF
OFF
ON
ON
-
-
Run and Speed Command Source
From the control circuit and analog input terminals
From the Communications Option Card
Terminal
Programmed as
Jog Reference
Frequency Reference 1 (d1-01) or analog input A1
OFF
Frequency Reference 2 (d1-02) or analog input A2
OFF
OFF
OFF
ON*
#
Shown for H3-13="0: Main Fref TA1"; A1 and A2 are reversed if H3-13="1: Main Fref TA2"
Programming 48
Details
(determined by b1-01)
(determined by H3-09)
Frequency Reference 3 (d1-03)
Frequency Reference 4 (d1-04)
Jog Frequency (d1-17)
#
#

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