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3. Setup
3 - 4
3-1-3 Servo standard specifications and high-gain specifications
(1) Two-part system compliance
With the MDS-C1-V1/V2 Series, control is possible with the standard servo (MDS-B-V1/V2) control
mode and high-gain servo (MDS-B-V14/V24) control mode. When replacing an older model
(MDS-B Series) with this series, the servo parameter settings are automatically recognized and the
control mode is determined. Thus, the model can be changed from either a standard servo or
high-gain servo without changing the servo parameters.
When using the MDS-C1-V1/V2 unit and newly adjusting the machine, select the high-gain
specifications. The high-gain specifications are set as the default.
(2) Judging the control mode
Whether the servo drive unit starts up with the standard servo specifications or high-gain servo
specifications depends on the servo parameter SV009 to SV012 and SV033/bit8, 9 settings.
Parameter High-gain Standard Standard High-gain High-gain
SV009
SV010
SV011
SV012
SV009 = 4096 or more, and
SV010 = 4096 or more, and
SV011 = 768 or more, and
SV012 = 768 or more
Setting that does not satisfy even
one of the following conditions:
SV009 = 4096 or more
SV010 = 4096 or more
SV011 = 768 or more
SV012 = 768 or more
SV009=*
SV010=*
SV011=*
SV012=*
SV009=*
SV010=*
SV011=*
SV012=*
SV009=*
SV010=*
SV011=*
SV012=*
SV033/bit8 0 0 1 0 1
SV033/bit9 0 0 0 1 1
(Note) * indicates that there are no limits.
(3) Servo monitor unit type display
Whether the system is running with the high-gain servo or standard servo control mode can be
confirmed with the unit type displayed on the NC SERVO MONITOR screen.
Unit type For standard servo specifications For high-gain servo specifications
MDS-C1-V1- C1V1s C1V1-
MDS-C1-V2-{{ C1V2s{{ C1V2-{{
MDS-C1-V1-45S C1V1s4S C1V1-4S
MDS-C1-V1-70S C1V1s7S C1V1-7S
MDS-C1-V2-3510S C1V2s3510 C1V2-3510
MDS-C1-V2-3520S C1V2s3520 C1V2-3520
MDS-C1-V2-4545S C1V2s4S4S C1V2-4S4S
MDS-C1-V2-7070S C1V2s7S7S C1V2-7S7S
MDS-C1-V2-9090S C1V2s9S9S C1V2-9S9S
CAUTION
1. To change the control mode to the high-gain servo specifications after
replacing the unit from a standard servo (MDS-B-V1/V2), the parameters
must be changed and adjusted for high-gain servo use.
2. If alarm 7F occurs after setting the servo parameters, turn the servo drive
unit power ON again.