
8.2 Mounting Linear Encoders
8.2.1 Linear Encoders from Heidenhain Corporation
8-4
8.2
Mounting Linear Encoders
Attach the linear encoder so that the forward direction of the Servomotor is the count-up direc-
tion of the linear encoder.
If wiring or other restrictions prevent using the same directions for the forward direction and
count-up direction, set parameter Pn080 to n.
1
(phase-B lead and phase sequence of U,
V, W).
The forward direction for the motor is toward the side where the cable is connected. (The for-
ward direction is the direction in which the Moving Coil moves when current flows in a phase
sequence of U, V, W.)
8.2.1
Linear Encoders from Heidenhain Corporation
8.2.2
Linear Encoders from RSF Elektronik GmbH
8.2.3
Linear Encoders from Renishaw PLC
8.2.4
Linear Encoders from RLS d.o.o.
If the forward direction of the Servomotor and the count-up direction of the linear motor do not
agree, the Servomotor may not operate or it may run out of control.
Important
Motor forwar
d dir
ection (U, V
, W)
Moving Coil cable
If the linear encoder is installed as shown in the diagram on the left,
the count is incremented when the scanning head moves to the
right.
Reverse
Scanning head
Signal cable
Forward
LIDA 48
HEIDENHAIN
If the linear encoder is installed as shown in the diagram on the left,
the count is incremented when the scanning head moves to the
right.
RSF Elektronik
Reverse
Forward
Scanning head
Signal cable
If the linear encoder is installed as shown in the diagram on the left,
the count is incremented when the scanning head moves to the
left.
Signal cable
Forward
Reverse
Scanning head
RENISHAW
RGH22
If the linear encoder is installed as shown in the diagram on the left,
the count is incremented when the scanning head moves to the
right.
RLS
Forward
Reverse
Signal cable
Scanning head