XPL
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
Tel: 781-828-8090
Fax: 781-828-6547
Tech Support: E-mail: [email protected], Web:
http://www.copleycontrols.co
m
Page 13 of 28
RoHS
Xenus
Plus
CANopen
QUAD A/B ENCODER WITH FAULT PROTECTION
Encoders with differential line-driver outputs provide incremental position feedback via the
A/B signals and the optional index signal (X) gives a once per revolution position mark. The
MAX3097 receiver has differential inputs with fault protections for the following conditions:
Short-circuits line-line:
This produces a near-zero voltage between A & /A which is below
the differential fault threshold.
Open-circuit condition:
The 121
Ω
terminator resistor will pull the inputs together if either
side (or both) is open. This will produce the same fault condition as a short-circuit
across the inputs.
Low differential voltage detection:
This is possible with very long cable runs and a fault will
occur if the differential input voltage is < 200mV.
±15kV ESD protection:
The 3097E has protection against high-voltage discharges using
the Human Body Model.
Extended common-mode range:
A fault occurs if the input common-mode voltage is
outside of the range of -10V to +13.2V
+5V output @ 400 mA
Signal Ground
21
20
17
5
19
Sin(+)
Sin(-)
Cos(+)
Cos(-)
Inx(+)
Inx(-)
18
1
-
+
-
+
10k
121
J10
10k
121
Encoder
FG
sin
cos
+5V
0V
23
22
-
+
10k
121
indx
Frame Ground
10k
Sin
Cos
Indx
10k
10k
ANALOG SIN/COS INCREMENTAL ENCODER
The sin/cos/index inputs are differential with 121 Ω terminating resistors and accept 1 Vp-p
signals in the format used by incremental encoders with analog outputs, or with
ServoTube
motors.
Encoder
FG
Frame Ground
J10
MAX3097
Enc. A
121
A
13
12
1
MAX3097
Enc. B
121
B
11
10
MAX3097
Enc. Index
121
Z
9
8
/X
X
/B
B
/A
A
+5V
0V
+5V output @ 400 mA
Signal Ground
6
5
RESOLVER (-R MODELS)
Connections to the resolver should be made with shielded cable that uses
three twisted-pairs. Once connected, resolver set up, motor phasing, and other
commissioning adjustments are made with CME 2 software. There are no hardware
adjustments.
Resolver
FG
Frame Ground
J10
Sin(+)
Sin(-)
Cos(-)
Cos(+)
Ref(+)
Ref(-)
21
20
19
18
1
23
22
R/D
Conversion
Sin
S3
S1
S2
S4
R1
R2
Cos
Ref
Motor connections
Motor connections are of three types: phase, feedback, and thermal sensor. The phase connections carry the drive output currents that
drive the motor to produce motion. A thermal sensor that indicates motor overtemperature is used to shut down the drive to protect
the motor. Feedback can be digital quad A/B encoder, analog sin/cos encoder, resolver or digital Halls, depending on the version of the
drive.
