sh030106u.pdf - 第625页
17. APPLICATIO N OF FUNCTIONS 17 - 74 (b) For a rotar y enc oder 1) MR-J4-_B_ servo am plifier Servo motor Two-wire type rotary encoder HG-KR, HG-MR servo motor (4194304 pulses/rev) Drive part Servo amplifier CN2 SSCNET …
17. APPLICATION OF FUNCTIONS
17 - 73
(2) System configuration
(a) For a linear encoder
1) MR-J4-_B_ servo amplifier
Servo amplifier
CN2
SSCNET III/H controller
SSCNET III/H
Position command
Control signal
Table
To the next servo amplifier
Two-wire type serial interface compatible linear encode
r
Load-side encoder signal
Servo motor encoder signal
Linear encoder head
Servo motor
2) MR-J4-_B_-RJ servo amplifier
Servo amplifier
CN2
SSCNET III/H controller
SSCNET III/H
Position command
Control signal
Table
To the next servo amplifier
A/B/Z-phase pulse train interface compatible linear encoder or
two-wire/four-wire type serial interface compatible linear encoder
Load-side encoder signal
Servo motor encoder signal
Linear encoder head
Servo motor
CN2L
(A/B/Z-phase pulse train interface or
serial interface)
17. APPLICATION OF FUNCTIONS
17 - 74
(b) For a rotary encoder
1) MR-J4-_B_ servo amplifier
Servo motor
Two-wire type rotary encoder
HG-KR, HG-MR servo motor (4194304 pulses/rev)
Drive part
Servo amplifier
CN2
SSCNET III/H controller
SSCNET III/H
Position command
Control signal
To the next
servo
amplifier
(Note)
(Note)
Servo motor encoder signal
Load-side encoder signal
Note. Use a two-wire t
y
pe encoder cable. A fou
r
-wire t
y
pe linear encoder cable cannot be used.
2) MR-J4-_B_-RJ servo amplifier
Servo motor
A/B/Z-phase differential output, two-wire/four-wire type rotary encode
r
HG-KR, HG-MR servo motor (4194304 pulses/rev), or
synchronous encoder Q171ENC-W8 (4194304 pulses/rev)
Drive part
Servo amplifier
CN2
SSCNET III/H controller
SSCNET III/H
Position command
Control signal
To the next
servo
amplifier
CN2L
Load-side encoder signal
Servo motor encoder signal
17. APPLICATION OF FUNCTIONS
17 - 75
17.3.2 Scale measurement encoder
POINT
Always use the scale measurement encoder cable introduced in this section.
Using other products may cause a malfunction.
For details of the scale measurement encoder specifications, performance and
assurance, contact each encoder manufacturer.
(1) Linear encoder
Refer to "Linear Encoder Instruction Manual" for usable linear encoders.
To use the scale measurement function in the absolute position detection system ([Pr. PA22] = 1_ _ _),
an absolute position linear encoder is required. In this case, you do not need to install the encoder
battery to the servo amplifier for backing up the absolute position data of the load side. To use a servo
motor in the absolute position detection system ([Pr. PA03] = _ _ _1), the encoder battery must be
installed to the servo amplifier for backing up the absolute position data of the servo motor side.
(2) Rotary encoder
If using a rotary encoder as a scale measurement encoder, use the following servo motor or encoder.
Servo amplifier HG-KR HG-MR
Synchronous encoder
Q171ENC-W8
A/B/Z-phase differential
output (Note)
MR-J4-_B_
MR-J4-_B_-RJ
Note.
A
/B/Z-phase differential output rotary encoders with the same specifications as A/B/Z-phase differential output
linear encoders can be used as scale measurement encoders. Refer to "Linear Encoder Instruction Manual".
Use a two-wire type encoder cable for MR-J4-_B_ servo amplifiers. Do not use MR-EKCBL30M-L, MR-
EKCBL30M-H, MR-EKCBL40M-H, or MR-EKCBL50M-H as they are four-wire type.
When an encoder cable of 30 m to 50 m is needed, fabricate a two-wire type encoder cable according to
app. 8.
To use the scale measurement function in the absolute position detection system ([Pr. PA22] = 1_ _ _),
the encoder battery must be installed to the servo amplifier for backing up the absolute position data of
the load side. In this case, the battery life will be shorter because the power consumption is increased as
the power is supplied to the two encoders of motor side and load side.
(3) Configuration diagram of encoder cable
Configuration diagram for servo amplifier and scale measurement encoder is shown below. Cables vary
depending on the scale measurement encoder.
(a) Linear encoder
Refer to Linear Encoder Instruction Manual for encoder cables for linear encoder.