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5. PARAMETERS
Class No. Symbol Name and function
Initial
value
Unit
Setting
range
Control
mode
20 *OP2 0000
Refer to
Name
and
function
column.
S
P S
Function selection 2
Used to select restart after instantaneous power failure,
servo lock at a stop in internal speed control mode, and slight
vibration suppression control.
0: Invalid
1: Valid
If the input power supply voltage
had reduced in the internal speed
control mode to stop the servo motor
due to the undervoltage alarm (AL.10)
but the supply voltage has return-
ed to normal, the servo motor can
be restarted by merely switching
on the start signal without resett-
ing the alarm.
Restart after instantaneous
power failure
Stop-time servo lock selection
The shaft can be servo-locked to
remain still at a stop in the internal
speed control mode.
0: Valid
1: Invalid
Slight vibration suppression control
Made valid when auto tuning selection is
set to "0400" in parameter No. 2.
Used to suppress vibration at a stop.
0: Invalid
1: Valid
Encoder cable communication system selection
Incorrect setting will result in an encoder alarm 1
(AL. 16) or encoder alarm 2 (AL. 20).
0: Two-wire type
1: Four-wire type
In case of the internal speed control mode,
set "1" at the second digit and validate servo
lock at stop to use this setting.
P S
Expansion parameters 1
21 *OP3 Function selection 3 (Command pulse selection)
Used to select the input form of the pulse train input signal.
(Refer to Section 3.4.1.)
Command pulse train input form
0: Forward/reverse rotation pulse train
1: Signed pulse train
2: A/B phase pulse train
Pulse train logic selection
0: Positive logic
1: Negative logic
0 0
0000
Refer to
Name
and
function
column.
P