Panasonic MINAS A4P Series - Manual (Page 40)

40
System Configuration and Wiring
Cautions
(1) Following external scale can be used for full-closed control.
• AT500 series by Mitutoyo (Resolution 0.05[ µ m], max. speed 2[m/s])
• ST771 by Mitutoyo (Resolution 0.5[ µ m], max. speed 2[m/s])
(2) Recommended external scale ratio is 1/20<External scale ratio<20
If you set up the external scale ratio to smaller value than 50/position loop gain (SV.Pr10 and 18), you
may not be able to control per 1 pulse unit. Setup of larger scale ratio may result in larger noise.
Wiring to the External Scale, Connector, CN X7
Wire the signals from the external scale to the external scale connector, CN X7.
1) Cable for the external scale to be the twisted pair with bundle shielding and to having the twisted core
wire with diameter of 0.18mm 2 .
2) Cable length to be max. 20m. Double wiring for 5V power supply is recommended when the wiring
length is long to reduce the voltage drop effect.
3) Connect the outer film of the shield wire of the external scale to the shield of the junction cable. Also
connect the outer film of the shield wire to the shell (FG) of CN X7 of the driver without fail.
4) Separate the wiring to CN X7 from the
power line (L1, L2, L3, L1C(r), L2C(t),
U, V. W, ) as much as possible (30cm
or more). Do not pass these wires in
the same duct, nor bundle together.
5) Do not connect anything to the vacant
pins of CN X7.
6) Cut away the driver's CN X7 cover.
Content
EX5V
EX0V
EXPS
EXPS
FG
Connector
PinNo.
1
2
5
6
Case
Application
Power supply output
for external scale
I/F of external scale signals
(serial signal)
Frame ground
External scale side
External scale unit
Detection head
Junction cable
Servo driver
EX5V
EX0V
EX5V
EX0V
EX5V
EX0V
EX5V
CN X7
EX0V
EXPS
EXPS
3
1
4
2
11
13
1
2
+5V
0V
3
4
5
6
7
8
15
Regulator
HDAB-15P
(by Hirose Electric Co.)
HDAB-15S
(by Hirose Electric Co.)
55100-0600
(by Molex Inc.)
Twisted pair
EXPS
FG
EXPS
X6
X7
Please cut it out
with nippers etc.
Wiring to the Connector, CN X7 (Connection to External Scale)
Power supply for the external scale shall be prepared by customer, or use the following power supply output
for the external scale (250mA or less).
<Note>
EXOV of the external scale power supply output is connected to the control circuit ground which is
connected to the Connecter, CN X5.
<Remark>
Do not connect anything to other Pin numbers descried in the above table (Pin-3 and 4).