Specifications

Radiated Electrical Noise
 •Noise can be generated by solenoids, relays, motors, starters, and similar devices.
• Using shielded cables will dramatically reduce the effects of noise. Most Accu-Coder
TM
cables are double shielded (foil and braid) for optimum protection.
• Ensure all equipment is properly grounded. (Motors, drives, shafts, etc.)
• Connect encoder cable shield to ground at controller/counter end, leaving the end near
the encoder unconnected. Connecting the shield at both ends can cause ground loops,
and improper operation.
• If possible, use differential line driver outputs with high quality shielded, twisted
pair cable. (Complementary signals greatly reduce common mode noise levels, as well
as signal distortion resulting from long cable lengths.)
• EPC’s line of Repeaters and Converters may help reduce the effects of electrical noise.
Typical Electrical Hook-Ups
Typical Differential Line Driver Hook-up
Typical Open Collector Hook-up
Typical Pull Up Resistor Hook-up
ENCODER
+VDC
A
A’
COMMON
ENCODER
+VDC
A
COMMON
ENCODER
+VDC
A
COMMON
CONTROLLER OR
COUNTER
+VDC
CONTROLLER OR
COUNTER
+VDC
Pull-Up Resistor
500-2.2K OHM
or equivalent
CONTROLLER OR
COUNTER
+VDC
+VDC
OUTPUT
OUTPUT
COMMON
Line Driver
+VDC
OUTPUT
COMMON
Push Pull
+VDC
OUTPUT
COMMON
Open Collector
+VDC
OUTPUT
COMMON
Pull Up Resistor1
1.5K OHM
+VDC
OUTPUT
COMMON
Pull Up Resistor2
2.2K OHM
LTR
DESCRIPTION
INITIAL RELEASE
DATE
REVISIONS
ISSUE DATE
NEXT ASSEMBLY
PREV ASSEMBLY
PART NUMBER
TOLERANCE
DECIMAL
DECIMAL
ANGULAR
ENCODER PRODUCTS COMPANY
INITIAL
DATE
DR
CK
QC
MFG
NAME AND TITLE
TYPICAL HOOK-UPS
DWG NUMBER
DWG SIZE
B
SCALE
NONE
SHEET 1OF
1
REV.
GMA 4/08/04
Typical Differential Line Driver Hook-up
Typical Open Collector Hook-up
Typical Pull Up Resistor Hook-up
ENCODER
+VDC
A
A’
COMMON
ENCODER
+VDC
A
COMMON
ENCODER
+VDC
A
COMMON
CONTROLLER OR
COUNTER
+VDC
CONTROLLER OR
COUNTER
+VDC
Pull-Up Resistor
500-2.2K OHM
or equivalent
CONTROLLER OR
COUNTER
+VDC
+VDC
OUTPUT
OUTPUT
COMMON
Line Driver
+VDC
OUTPUT
COMMON
Push Pull
+VDC
OUTPUT
COMMON
Open Collector
+VDC
OUTPUT
COMMON
Pull Up Resistor1
1.5K OHM
+VDC
OUTPUT
COMMON
Pull Up Resistor2
2.2K OHM
LTR
DESCRIPTION
INITIAL RELEASE
DATE
REVISIONS
ISSUE DATE
NEXT ASSEMBLY
PREV ASSEMBLY
PART NUMBER
TOLERANCE
DECIMAL
DECIMAL
ANGULAR
ENCODER PRODUCTS COMPANY
INITIAL
DATE
DR
CK
QC
MFG
NAME AND TITLE
TYPICAL HOOK-UPS
DWG NUMBER
DWG SIZE
B
SCALE
NONE
SHEET 1OF
1
REV.
GMA 4/08/04
Typical Differential Line Driver Hook-up
Typical Open Collector Hook-up
Typical Pull Up Resistor Hook-up
ENCODER
+VDC
A
A’
COMMON
ENCODER
+VDC
A
COMMON
ENCODER
+VDC
A
COMMON
CONTROLLER OR
COUNTER
+VDC
CONTROLLER OR
COUNTER
+VDC
Pull-Up Resistor
500-2.2K OHM
or equivalent
CONTROLLER OR
COUNTER
+VDC
+VDC
OUTPUT
OUTPUT
COMMON
Line Driver
+VDC
OUTPUT
COMMON
Push Pull
+VDC
OUTPUT
COMMON
Open Collector
+VDC
OUTPUT
COMMON
Pull Up Resistor1
1.5K OHM
+VDC
OUTPUT
COMMON
Pull Up Resistor2
2.2K OHM
LTR
DESCRIPTION
INITIAL RELEASE
DATE
REVISIONS
ISSUE DATE
NEXT ASSEMBLY
PREV ASSEMBLY
PART NUMBER
TOLERANCE
DECIMAL
DECIMAL
ANGULAR
ENCODER PRODUCTS COMPANY
INITIAL
DATE
DR
CK
QC
MFG
NAME AND TITLE
TYPICAL HOOK-UPS
DWG NUMBER
DWG SIZE
B
SCALE
NONE
SHEET 1OF
1
REV.
GMA 4/08/04
Differential Line Driver
Open Collector
Pull-Up Resistor
7