Yaskawa E7L Drive Bypass - Manual (Page 103)

Programming 5 - 11
If A1-01 is configured for Advanced Access (A1-01= “2: Advanced Level”), then all menus and all parameters are shown. If the
Access Level Selection is set to Advanced, all parameters should be adjustable unless:
1. The Drive parameters are password protected (A1-04) which will prevent access to A1-00 through A1-03 and all A2
parameters.
2. A digital input has been configured as a Program Lockout (H1-0X= 1B) is active.
3. During serial communication writing, if a parameter change is also attempted via the digital operator, a
“BUSY - WRITE PROTECTED” message will display. Parameter change will not be possible from the digital operator until an
Enter command is received via the serial communication to finish the serial writing process.
A1-03 Initialize Parameters
The Drive can be set back to one of three default states via the A1-03 parameter.
Note: The E7L application of the Drive employs “2-wire” control.
1. User Initialization – 1110:The modified Drive parameters are returned to the values selected as user settings. User settings
are stored when parameter o2-03= “1: Set Defaults”.
2. 2-Wire Initialization – 2220: The Drive parameters are returned to factory default values with digital inputs S1 and S2
configured as Forward Run and Reverse Run, respectively.
3. 3-Wire Initialization – 3330: The Drive parameters are returned to factory default values with digital inputs S1, S2, and S5
configured as Run, Stop, and Forward/Reverse respectively.
After an initialization is performed, parameter A1-03 will automatically be set back to 0.
Fig 5.1 2 & 3-Wire Control Wiring Examples
See “Virtual Terminals” note on page 5-2.
A1-00 Language Selection
E1-03 V/f Pattern Selection
o2-04 kVA Selection
o2-09 Initialization Specification Selection
Setting Description
0 No Initialize (factory default)
1110 User Initialize
2220 2-Wire Initialize
3330 3-Wire Initialize
IMPORTANT
Some parameters are unaffected by either the 2-Wire or 3-Wire initialization. The following parameters will
not be reset when parameter A1-03=2220 or 3330:
S1
S2
SN
FWD Run/Stop
REV Run/Stop
2-wire control
Stop
switch
(NC contact) Operation
switch
(NO contact)
Run command
(run on momentary close)
Stop command
(stop on momentary open)
Forward/reverse command
(multi-function input)
Sequence input common
S3 or S5
3-wire control 2-wire control
SN