9.2 Trial Operation Using SERVOPACK Internal References
9-13
9
When Motor Forward Direction and Linear Scale Count Direction Do Not Match
When the motor forward direction and linear scale count direction are reversed due to wiring or other factors, set so that
parameter Pn080.1 = 1 (B-phase progression, U, V, W-phase in order).
Linear Scale Count Direction
The Heidenhain or Renishaw linear scale counts pulses when the sensor head is operated to the side attached the signal
cable. However, the direction in which the signal cable is extended is different, so the count direction is different. (Viewed
from above).
• Heidenhain linear scale
• Renishaw linear scale
(3) Adjusting the Linear Scale
When the linear scale is an open type, adjust the head installation. For details on the adjustment method, contact
the manufacturer of the scales.
When the linear scale is a sealed type, adjustment is not required. But the dimensional tolerances for installation
must be maintained.
(4) Connecting the Cables
Check the power supply circuit, linear servomotor and encoder wirings. Do not connect the I/O signal connector
(CN1).
For main circuit wiring examples, refer to
7.2 Wiring Main Circuit
.
For details on the linear servomotor’s main circuit cable and encoder cable, refer to
2.6 Selecting Peripheral
Devices
.
When installed as shown in the diagram on the left, operation is
performed in the forward direction when the sensor head is
moved to the right.
When installed as shown in the diagram on the left, operation is
performed in the forward direction when the sensor head is
moved to the left.
INFO
Reverse direction
Sensor head
Signal cable
Forward direction
LIDA 48
HEIDENHAIN
Signal cable
Forward direction
Reverse direction
Sensor head
RENISHAW
RGH22
Encoder cable
To power supply
C
N
3
C
N
1
L1C
L2C
B1
B2
U
V
W
L1
L2
+
1
MODE/SET
DATA/
CHARGE
POWER
C
N
2
SGDH-
SERVOPACK
200V
YASKAWA
+
2
-
Summary of Contents for SGLFW
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