Introduction
Welcome to the EPC Encoder Selection Guide. The process of
selecting an encoder for your motion system is not as simple and straightforward
as it might seem at first glance since there are a large number of variables
that must be considered, most of which are dependent upon factors outside of
the encoder itself. Some examples:
- Since encoders are most often used as feedback devices, what information does
your system need?
- At what point or points in the overall process is feedback appropriate?
- What are the environmental conditions that the encoder will be subjected to?
As a result of these types of considerations, the purpose of this
guide is not to provide the answer, but rather to provide you guidance in choosing
which one of EPC's wide range of solutions will best meet your requirements.
Let's get started!!
Selection Criteria
Your motion system will usually dictate what set of selection
criteria are most important to you. These criteria usually fall into one of
the following broad categories. Select the one that is most important to you:
Resolution
|
Incremental Encoders
|
EPC Encoder
Model Number |
1 to
1270
|
1271 to 2540
|
2540 to 4096
|
4096 to 10,000
|
10,000 to 30,000
|
| Cube Series |
• |
• |
|
|
|
| Cube Series (715) |
• |
• |
• |
• |
|
| 755, 702, 725, 758 |
• |
• |
• |
• |
• |
| 260 |
• |
• |
|
|
|
| 225 |
• |
|
|
|
|
| 770, 771 |
• |
• |
• |
|
|
| 775, 776 |
• |
• |
• |
|
|
Notes: Not all resolutions (CPR, PPR) are available in the range
indicated for the Models shown.
|
Absolute Encoders
|
EPC Encoder
Model Number |
8 bit
|
9 bit
|
10 bit
|
11 bit
|
12 bit
|
| 926 |
• |
• |
• |
|
|
| 925 |
• |
• |
• |
• |
• |
| 958 |
• |
• |
• |
• |
• |
Note: The Model 926 is a Thru-Bore, while the other two have shafts.
Mounting
|
Shaft Type Encoders
|
EPC
Encoder
Model Number |
Measuring Wheel
|
Chain/Cam and Sprocket
|
Shaft to Shaft Coupling
|
Flange
Mount |
Servo Mount
|
Tach Generator (5PY)
|
NEMA Adapter
|
| Cube Series |
• |
• |
• |
|
|
• |
|
| 755 |
|
|
• |
• |
• |
• |
• |
| 702 |
• |
• |
• |
• |
• |
• |
• |
| 725 |
|
• |
• |
• |
• |
• |
|
| 758 |
|
• |
• |
|
• |
|
|
| 925 |
|
|
• |
• |
• |
|
|
| 958 |
|
|
• |
|
• |
|
|
Notes: Standard and Industrial housings in the Cube Series are
available with double-ended shafts.
|
Thru-Bore or Blind
Hollow Style Encoders
|
EPC
Encoder
Model Number |
Thru-Bore (T)
or
Blind Hollow (B)
|
Direct
on
Motor
|
Direct on Shaft
|
Flex Mount
|
Large Bore
|
|
| 755 |
B |
• |
• |
• |
• |
|
| 702 |
B |
• |
• |
• |
|
|
| 260 |
B & T |
• |
• |
• |
• |
|
| 225 |
T |
• |
• |
|
• |
|
| 770 |
T |
• |
• |
|
|
• |
| 771 |
T |
• |
• |
|
• |
• |
| 775 |
T |
• |
• |
|
|
|
| 776 |
T |
• |
• |
|
• |
|
| 926 |
B & T |
• |
• |
• |
• |
|
| Environmental |
| High Temperature |
| |
To 70° C - All Accu-Coders™ have this as
their Standard Temperature Rating. |
| |
To 100° C - All Accu-Coders™ offer optional
operation to this temperature. |
| |
To 120° C - Model 260 |
|
Sealing Options
|
| EPC Encoder Model Number |
To IP50
|
To IP64
|
To IP65
|
To IP66
|
| Cube Series |
• |
|
• |
|
| 702 |
• |
• |
|
• |
| 725 |
• |
• |
|
• |
| 758 |
• |
• |
|
• |
| 770 |
• |
|
• |
|
| 771 |
• |
|
• |
|
| 925 |
|
• |
• |
|
| 958 |
|
• |
• |
|
|
Housing
|
EPC Encoder
Model Number |
Industrial Grade
|
Extra Heavy Duty
|
Extra Shock Resistance
|
Extra Isolation
|
NEMA
|
Explosion
Proof
|
| All EPC Encoders |
• |
|
|
|
|
|
| Cube Series |
• |
• |
• |
• |
|
• |
| 725I |
• |
|
|
• |
|
|
| 755 |
• |
• |
|
|
• |
• |
| Absolute or Incremental |
| Incremental |
| |
EPC offers the most extensive selection of incremental
encoders in the industry. |
| |
|
| Absolute |
| |
With Shaft: Size 25 or European Size 64 = Model
925; European Size 58 = Model 758
Thru-Bore or Hollow Bore = Model 926 |
|
PRODUCTS