Panasonic MINAS A6 Series Operating Instructions Manual page 77

7. Wiring to the connector, X5
Connect on to Feedback Scale
Wiring Diagram of X5
Detection head
External scale unit
How to Wiring
Wire the signals from the external scale to the external scale connector, X5.
1) Cable for the external scale to be the twisted pair with bundle shielding and to hav-
ing the twisted core wire with diameter of 0.18 mm
2) Cable length to be max. 20 m. Double wiring for 5 V 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 con-
nector X5 of the driver without fail.
4) Separate the wiring from the power line (L1, L2, L3, L1C, L2C, U, V, W,
as possible (30 cm or more). Do not pass these wires in the same duct, nor bundle
together.
5) Do not connect anything to the vacant pins of X5.
6) The maximum power available from the connector X5 is 250 mA at 5 V ±5 %. If you
use an external scale requiring more power, you should provide the suitable power
source by yourself. Some external scales need longer initialization period after
power up. Your design should meet this operation timing after power up.
7) When driving the external scale from an external power supply, keep the EX5V
pin open circuit so that it does not receive any external voltage. Connect the
GND circuit (0 V) to EX0V (connector X5, pin 2) of the driver to eliminate potential
difference.
Input circuit
• EXA, EXB, EXZ input circuit
Remarks
• X1 to X6 are used for the secondary circuit. To connect these terminals to the primary power
supply (particularly, the 24 VDC power supply for brake), insulation is required.
Do not connect these terminals to the same power supply.
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EX5V
EX0V
EXPS
EXPS
EXA
EXA
EXB
EXB
EXZ
EXZ
FG
External scale side
Connec or X5
1
EX5V
2
EX0V
3
EXPS
4
EXPS
5
EXA
6
EXA
7
EXB
8
EXB
9
EXZ
10
EXZ
Twisted pair
MUF PK10K X
(J S T Mfg Co L d )
Shell of X5 (FG)
Junction cable
Servo driver
2 .
2 kΩ
20 kΩ
EXA, EXB, EXZ
120 Ω
EXA, EXB, EXZ
20 kΩ
2 kΩ
+5 V
0 V
) as much
PULS
2-37
1
2
3
4
5
6
7