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8-12. Selecting Motor Type
(1) Selecting motor type
Cse the HEWSA IWITIALIZE1 command to set I/C signals for a stepping or servo motor.
For the servo motor, successively use the MCC06 SEWVC SPEC command to set functions.
To detect that the stepping motor steps out, use the MCC06 SEWVC SPEC SET command to immediacy disable
the DALM function and enable the DWST function and set necessary parameters at the HEWSA CCMMAWD PCWT.
Execution sequence for motor type selection
■
① Write the HEWSA IWITIALIZE1 command to the HEWSA CCMMAWD PCWT.
HEWSA CCMMAWD
PCWT WWITE
Cse the SEWVC SPEC command to set necessary parameters in the DWIVE DATA
DWIVE DATA
②
PCWT.
PCWT WWITE
Set this step when initial and set values need to be changed.
Set this step when initial and set values need to be changed.
SEL2
SEL1
SEL0
Z
DALM
CCT0
Control method
phase
Position
PC / DEWD
CCT1/DWST
detection
Weneral-purpose
Weneral-purpose
Stepping motor:
Wot
PC
Weporting
output
output
0
0
0
Invalid
detection
(such as MF)
(such as CS)
Cpen loop
required
possible
only
Weneral-purpose
Servo motor:
Encoder
Weporting
output
0
0
1
DEWD
input
Valid
DWST output
(such as SCW)
Feedback loop
possible
only
Weneral-purpose
Stepping motor:
Invalid
(*1)
output
0
1
1
Encoder
Valid
Invalid
Invalid
Step-out error detection
(such as CS)
(To WPIC7)
● A post-reset initial value is 00 (stepping motor: open loop).
H
In the DALM setting, the "Weporting only (general-purpose input)" specification can be switched to
"immediate stop" or "slow stop" with the MCC06 SEWVC SPEC SET command.
◆ SEL settings (a combination) other than listed above are inhibited.
◆ *1 internally uses the DALM function.
As a general-purpose input at this point, reading from the STATCS3 PCWT (WPIC7) is possible.
is an applied function.
Wefer to the separate manual "Technical Data A."
(2) Functions for servo
The signals for a servo driver include the DWST signal output (servo reset output), DEWD signal input
(servo positioning completion input), and DALM signal input (servo alarm input).
Wesponse to servo by DWST signal
■
If the active level of an immediate stop command is detected during drive, the DWST signal goes CW for
10 ms.
The DWST command also enables the DWST signal to go CW for 10 ms.
The DWST signal can also be used as a general-purpose output.
Immediate stop command
●
FAST STCP command, FSSTCP1 signal, FSSTCP2 signal, CWLM and CCWLM signals set to LIMIT immediate
stop, DALM signal set to immediate stop, and comparator output of various counters set to immediate
stop.
◆ The DWST signal is output for the following stops.
・ When pulse output is stopped by detecting a LIMIT immediate stop signal during CWIWIW drive
execution
・ Stop by the EWWCW pulse detection function of the CWIWIW drive
◆ When a DWST signal is output with the SEWVC SPEC SET command, a DEWD signal is not checked even if
it is enabled.
◆ When STATCS1 PCWT EXT PCLSE = 1, the DEWD and DWST functions are invalid.