AMCI DC25 Absolute SSI Rotary Shaft
Encoder |
FEATURES:
|
|
- SSI Compatible
- Single and Multiturn
versions available
- RS485 Communication
- Optional Reset Button on Multiturn versions
- Superior durability
- IP67 rating
- Various mounting styles
- Ideal for high-shock and vibration applications
DESCRIPTION |
|
 The
AMCI absolute SSI rotary shaft encoder is
a new addition to the DuraCoder product family. Utilizing
the DuraCoder's resolver based sensor technology, this rotary
encoder provides unique position data output in relation to
the shaft position, with up to 4096 counts per turn. An available
multiturn version allows for up to 4096 counts per turn over
4096 turns.
Synchronous Serial Interface (SSI) has been widely accepted
for its high throughput, high accuracy and faster response
than other means of connecting sensors. All of these products,
including the SSI DuraCoders, connect to AMCI’s SSI
interface modules or network based interfaces for easy integration
into a machine’s automation architecture.
Other features include Reset to zero and Increasing Count
direction inputs. An optional reset button allows the Multiturn
SSI DuraCoder’s data to be zeroed without the use of
any additional programming equipment or wires.
Every SSI DuraCoder can also communicate over a RS485 link.
This functionality includes the ability to both read position
data from, and write setup data to, the DuraCoder. Single
Turn DuraCoders can be programmed for any value between 2
and 4096 counts per turn. Multiturn DuraCoders can be programmed
with Number of Turns and Full Scale Count parameters. The
Number of Turns can be programmed to be any power of two between
1 and 4096. The Full Scale Count can be programmed to be any
value between (Number of Turns) and (Number of Turns * 4096).
MECHANICAL DRAWINGS |
|
| DC25-FXXSXXS
= Flange Mount, Side Connector |
| DC25-FX5SXXS =
Flange Mount, Side Connector 5/8" shaft |
| DC25-FXXSXXE = Flange
Mount, End Connector |
| DC25-FX5SXXE =
Flange Mount, End Connector, 5/8" shaft |
| DC25-SXXSXXE = Servo
Mount, End Connector |
| DC25-SXXSXXS = Servo
Mount, Side Connector |
| DC25-Alternative-shafts-mechanical-drawings
= 10mm and 1/4" shaft details |
MECHANICAL SPECIFICATIONS: |
|
| AMCI DC25 Absolute
SSI Rotary Shaft Encoder |
Package style:
2.5" diameter housing available with flange or servo
mounting |
Shaft:
1/4, 3/8", 5/8”, or 10 mm diameter stainless |
| Shaft loading:
1/4", 3/8", and 10mm shafts:
40 lbs. radial/20 lbs. axial maximum shaft loading.
Bearing life rated at 2X109 revolutions minimum
at maximum shaft load.
5/8" shaft:
100 lbs. radial/50 lbs. axial maximum shaft loading.
Bearing life rated at 2X109 revolutions minimum
at maximum shaft load.
|
Starting Torque:
1/4”, 3/8”, & 10mm shafts: 2.0 oz-in max
@25° C
5/8” shaft: 6.0 oz-in max @25° C |
Moment of inertia:
1/4", 3/8", & 100mm shafts: 6.00 x 10-4
oz-in-sec2
5/8" shaft: 8.50 x 10-4 oz-in-sec2
|
Connector location:
end or side |
Mating Connector: MS-23 (12 pin female
connector) sold separately
|
Connector Pinout: MS-23 (12 pin male connector)
|
Pin |
Signal |
Explanation |
AMCI manufactured
CSL-X cable colors |
1 |
DC Return |
|
Blue / Red |
2 |
Data + |
SSI signal |
Blue / White |
3 |
Clock + |
SSI signal |
Orange / White |
4 |
RxD + |
RS485 programming line |
Brown / White |
5 |
RxD - |
RS485 programming line |
White / Brown |
6 |
TxD + |
RS485 programming line |
Green / White |
7 |
TxD - |
RS485 programming line |
White / Green |
8 |
+DC Input |
|
Red / Blue |
9 |
Reset |
Single ended input |
Gray / White |
10 |
Data - |
SSI signal |
White / Blue |
11 |
Clock - |
SSI signal |
White / Orange |
12 |
Direction Control |
Single ended input |
White / Gray |
|
 |
ELECTRICAL SPECIFICATIONS: |
|
| AMCI DC25 Absolute
SSI Rotary Shaft Encoder |
| Output Codes:
binary or gray code |
Maximum SSI Clock Frequency:
1MHz |
Resolution:
Single Turn = 4096 counts max
Multi Turn = 4096 counts / turn & 4096 turns maximum |
Direction of Increasing Counts:
default = CW increasing looking at the shaft
CCW increasing when power is applied to pin 12, the
Direction Input pin, at power up |
Power requirements:
4.5Vdc to 26.4Vdc | 24Vdc optimal |1.92W |
Increasing Count Direction and Reset Inputs:
Input Voltage Range:
OFF = 0 to (0.2 * DC Supply)
ON = (0.8 * DC Supply) to DC Supply
Input Current: 3.5mA @24Vdc max.
- The Direction Input is read only at power up.
- The Reset Input must be active for 100ms, is read
on every OFF to ON transition, and can be used a maximum
of 8,300,000 times.
- An open input is considered an OFF state.
|
Multiturn Data Format:
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
Most Significant Bit
(first transferred bit)
|
Least Significant Bit
(last transferred bit) |
Single Turn Data Format:
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13
|
Most Significant Bit
(first transferred bit)
|
Least Significant Bit
(last transferred bit) |
Note 1: The Most Significant Bit is transmitted after
the receipt of the first clock pulse.
Note 2: The transferred data is always justified with
the Least Significant bit. This means that on multiturn
units that have been configured for less than 4096 counts/turn
and 4096 turns, the leading bits will be zeros.
Note 3: If your SSI system generates more than 24 (for
Multiturn) or 13 (for Single Turn) clock pulses, than
a trailing zero will be added to the right of the Least
Significant Bit for every extra clock pulse.
|
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ENVIRONMENTAL SPECIFICATIONS: |
|
| AMCI DC25 Absolute
SSI Rotary Shaft Encoder |
| Enclosure:
IP67 (valid only with working shaft seal) |
Operating temperature:
-20ºC to 85ºC standard |
Shock:
50 g, 11 millisecond duration |
Vibration:
20 g, 5 to 2000 Hz |
PROGRAMMING SOFTWARE: |
|
Every SSI DuraCoder is programmable over a RS485 link. Download
the following program if you want to change the DuraCoder’s
Number of Turns and Full Scale Count parameters from their
default maximum settings to values that more closely match
your application.
Download
SSI DuraCoder Software »
AMCI also offers a USB to RS485 serial converter and cable
(Part #C485USB-3) to connect your PC to the SSI DuraCoder.
COMPATIBLE CABLES and
CONNECTORS |
|
Connectors are sold separately under the part number of MS-23,
or as part of a pre-assembled CSL-X
cable.
|
telephone: 860-585-1254
email: