AMCI ME15 Absolute SSI Rotary Shaft
Encoder |
AMCI's ME15 SSI encoder utilizes a small diametrically polarized
magnet and a custom ASIC that contains an array of Hall sensors
that generate a voltage when exposed to a magnetic field.
The ASIC detects the change in magnetic flux distribution
as the magnet rotates above it and outputs a voltage level
that represents the angular position. The ASIC also has the
ability to ignore any interfering magnetic fields, allowing
the ME15 to operate in areas of high external fields.
MECHANICAL SPECIFICATIONS:
|
|
| AMCI ME15 Absolute
SSI Rotary Shaft Encoder |
Package style:
Size 15 (1.5" diameter) aluminum housing with servo
mounting |
Housing:
Aluminum housing |
Shaft:
1/4” or 6mm diameter stainless |
| Shaft loading:
1/4" and 6mm shafts:
10 lbs. radial/5 lbs. axial maximum shaft loading. Bearing
life rated at 2X109 revolutions minimum at maximum shaft
load.
|
Starting Torque:
2 oz. in max @25° C (with standard shaft seal)
0.2 oz. in max @25° C (no shaft seal) |
Moment of inertia:
1.75 * 10-5 oz-in-sec2 |
Maximum speed:
20,000 RPM |
Connection Options:
- Seven pin, M9, End Connector
- Integral Cable in 1.5’, 3’, 6’
or 10’ lengths
28 AWG, 7 conductors with overall shield
|
ELECTRICAL SPECIFICATIONS: |
|
| AMCI ME15 Absolute
SSI Rotary Shaft Encoder |
Resolution:
10 bits, 1024 counts |
Accuracy:
+ 0.5° |
Direction of Increasing Counts:
CW or CCW, specified when ordering |
Rotational Measuring Range:
360 degrees continuous |
Protection:
Over and Reverse voltage protection, short circuit protected |
Power Up Setting Time:
20ms |
ENVIRONMENTAL SPECIFICATIONS: |
|
| AMCI ME15 Absolute
SSI Rotary Shaft Encoder |
| Enclosure:
IP67 (valid only with working shaft seal) |
Operating temperature & Storage temperature:
-40ºC to 85ºC standard |
Shock:
50 g, 11 millisecond duration |
| Vibration:
20 g, 5 to 2000 Hz |
SSI OUTPUT SPECIFICATIONS: |
|
| AMCI ME15 Absolute
SSI Rotary Shaft Encoder |
| Power requirements:
4.75 to 30Vdc |
Output code:
binary |
Enable input:
When the Enable Input is high (+5Vdc) the ME15’s
outputs will enter a High Impedance state. This disables
the encoder and allows several SSI ME15 encoders to be
multiplexed together.
When the Enable Input is pulled low, the ME15 SSI encoder
will output its SSI data. If the ME15 SSI encoder is to
be used continuously, this can be achieved by simply connecting
the Enable Input to DC Return.
Input Voltage Range:
Enabled (Low) = 0 to 0.8Vdc
Disabled (High) = 2V to 5.5Vdc Input Current: 10uA
@5Vdc for both High and Low states |
SSI clock frequency:
100kHz to 1MHz |
| Mating connector: (sold
separately)
| |
AMCI part# |
Binder part# |
| |
MS-9 |
99 0426 00 08 |
|
Connector Pinout: 7 pin male
M9 connector or 7 conductor Integral Cable:
Signal |
Connector |
Integral
Cable |
+DC input |
1 |
Red |
DC return |
2 |
Black |
+ Clock |
3 |
Green |
- Clock |
4 |
Brown |
+ Data |
5 |
Blue |
- Data |
6 |
Orange |
Enable |
7 |
White |
|
SSI Protocol:
The following diagram shows the signal protocol of
the SSI version of the ME15 encoder. This format is used
on ME15 Encoders both with and without the multiplexing
option.
Tint = The time of one interrogation
Tclk = The period of the clock pulse
Tidle = The time between the last Clock
pulse and the first falling edge of the next clock cycle
Tm = The time that the Stop bit is
valid, typically 15 to 20 μs
Note 1: Use only 10 SSI clock pulses
if only the absolute angular position data is needed.
Note 2: On ME15 SSI encoders with the
multiplexing option, there will be separate Enable Lines
for each encoder, but the Data and Clock lines of all
of the DuraCoders will be connected together.
Note 3: When using the multiplexing
option, a high signal on the Enable input disables the
encoder by placing the Data Output lines in a high impedance
state. When the Enable input is pulled low, the ME15
encoder will continuously output its data until the
Enable input is again pulled high. The enable input
must not be left floating.
|
AMCI's
ME15 SSI rotary shaft encoder is designed for cost sensitive
applications that require bullet-proof reliability. The ME15
magnetic encoder measures just under 1.5" in diameter
and is engineered for heavy-duty operation across a variety
of industries. The encoder's IP67 rating protects against
dust and moisture, and the sensor's compact design only relies
on two components, ensuring trouble free operation.
telephone: 860-585-1254
email: