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SSI Interface Absolute Rotary Encoder
Technical Data
Electrical
Supply Voltage Current Consumption Output Code Linearity Counting Direction (shaft end view) Interface Type Transfer rate Monoflop time Resolution Bits/steps per turn Bits/number of turns Overall Resolution Single-turn Multi-turn Standard Conformity Inputs Type 10-30 VDC 140 mA Gray, binary 1 LSB Clockwise ascending (factory preset) SSI 0.05-1.5 MBaud 20 10 ms 16-bit/65536 max. 12-bit/4096 max. 16-bit 28-bit RS-422 Selection of counting direction (V/R) Preset 1 10-30 V (high) 0-2 V (low) <6 mA <0.1 ms
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ASS58/ASM58 Series
Pepperl+Fuchs' ASS58/ASM58 series absolute encoders feature recessed hollow shafts and communicate via SSI (synchronous serial interface). The encoder is mounted directly to the shaft using set screws. The torque rest is used to prevent the encoder from rotating. Available in either single-turn with 16-bit resolution, or multi-turn with 28-bit resolution versions. These encoders are rated IP65 and feature a rugged aluminum housing.
Signal voltage Input current Switch-on/off delay
Mechanical
Material (standard model) Housing Flange Shaft Pulse disc Material (stainless model) Housing Flange Shaft Pulse disc Weight Standard Stainless Maximum Rotational Speed Moment of Inertia Starting Torque at 20C Shaft Loading Angle offset Axial offset Bearing Working Life Powder-coated aluminum Aluminum Stainless steel Glass Stainless steel Stainless steel Stainless steel Glass 16 oz. 27 oz. 6,000 rpm 4.3 x 10-4 oz-in-sec2 2.1 in-oz 1 1 mm >2 x 1010 revolutions
SSI compatible Industrial standard 58 mm diameter housing Single or multi-turn IP65 10 or 12 mm recessed hollow shaft
ASS58/ASM58 Series Order Code
AS 58 Type S Single-turn M Multi-turn Housing N Aluminum (standard) I Stainless steel*
* axial exit position only
NBits per revolution 12 4096 (standard) 13 8192 16 65536 Number of revolutions 00 1 (single-turn) 12 4096 (multi-turn)
Environmental
Storage Temperature Operating Temperature Humidity Shock Resistance Vibration Resistance Enclosure Rating -25C to +85C (-13F to +185F) -20C to +70C (-4F to +158F) 98% RH non-condensing 100 G for 3 ms 10 G, 10-2,000 Hz IP65
Connection Types
Connector Cable Type 9416, 12-pin Type 9416L, 12-pin O7 mm, 12 x #26 AWG, 1 m length
Shaft option F1A Recessed hollow shaft O 10 mm x 20 mm F2A Recessed hollow shaft O 12 mm x 20 mm Connection type AA Type 9416, 12-pin connector AB Type 9416L, 12-pin connector K1 Cable, 1m
Code B Binary* G Gray
* Processor option 0 only
Exit position A Axial R Radial
Processor option 0 With microprocessor (standard) H No microprocessor
Example: ASS58N-011AAR0GN-0013
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PEPPERL+FUCHS
Pepperl+Fuchs(R) Inc. * 1600 Enterprise Parkway * Twinsburg, Ohio 44087-2245 * www.am.pepperl-fuchs.com Telephone (330) 486-0001 * FAX (330) 405-4710 * E-Mail: sales@us.pepperl-fuchs.com
SSI Interface Absolute Rotary Encoder
Dimensions
mm (in.)
Connection type AA or AB Style 9416 12-pin connector
X (see table) 3.3 (0.13) 1.3 (0.05) 10 12 (0.39) or (0.47) 22 (0.87) 72 (2.83) O63 (2.48) 3.3 (0.13) 1.3 (0.05) 10 12 (0.39) or (0.47) X (see table)
Connection type K1 1 m cable
28 (1.10) 72 (2.83)
ASS58/ASM58 Series ASS58/ASM58 Series
O63 (2.48)
o59 (2.32)
o59 (2.32)
20 (0.79)
20 (0.79)
20
20
Lay-on edge torque support
22 (0.87)
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33 (1.30)
Hollow shaft depth: 30 (1.18) max. 15 (0.59) min.
20 (0.79)
Exit option A (axial) Exit option R (radial)
30 (1.18) R100 o7 20 (0.79)
Exit option A (axial) Exit option R (radial)
25 (0.98) 30 (1.18)
Dimension X Single-turn Multi-turn
76 (3.00) 98 (3.86)
Electrical Connection
AA Signal Power Source UB GND Clock (+) Clock (-) Data (+) Data (-) Reserved V/R Preset Reserved Reserved Reserved
Type 9416, 12-pin quick disconnect
AB
Type 9416L, 12-pin quick disconnect
K1
12-conductor cable, O 7 mm
2 1 3 4 5 6 7 8 9 10 11 12
9 8 12 7 6 5 11 4 1 10 2 3 2 3 4 10 1
8 1 3 11 2 10 12 5 9 4 6 7
9 8 12 7 6 5 11
Brown White Green Yellow Gray Pink Blue Red Black Violet Gray/Pink Red/Blue
Description Power supply Power supply Positive cycle line Negative cycle line Positive transmission data Negative transmission data Not wired, reserved Input for selection of counting direction Zero setting input Not wired, reserved Not wired, reserved Not wired, reserved
5
PEPPERL+FUCHS
Pepperl+Fuchs(R) Inc. * 1600 Enterprise Parkway * Twinsburg, Ohio 44087-2245 * www.am.pepperl-fuchs.com Telephone (330) 486-0001 * FAX (330) 405-4710 * E-Mail: sales@us.pepperl-fuchs.com
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SSI Interface Absolute Rotary Encoder
Series ASS58/ASM58 Programming
Description
The synchronous serial interface was specially developed for transferring the output data of an absolute encoder to a control device. The control module sends a clock signal and the absolute encoder responds with the position value.
ASS58/ASM58 Series
Thus only 4 lines are required for the clock and data, regardless of the rotary encoder resolution. The RS-422 interface is galvanically isolated from the power supply.
SSI Data Transfer
T Tp
Clock Tm Dn MSB Dn-1 D n-2 Dn-3 D2 D1 S LSB
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Data
D1, ..., Dn: S: MSB: LSB:
Position data Special bit Most significant bit Least significant bit
T = 1/f: Tm : Tp :
Duration of period, f < 1 MHz Monoflop time 10-30 s Clock pause monoflop time Tp Tm
Block Diagram
Tr ansceiver RS 422 Data + Data Logic
opt./galv. separation
Line Length
Transceiver RS 422 Receiver
Line length in m <50 <100 <200 <400
Baudrate in kHz <400 <300 <200 <100
Clock + Clock -
Clock generator
Rotary encoder AS
Interface electronics
Inputs
The selection of the counting direction input is activated with 0-level. The PRESET input is activated with 1-level.
PRESET Input
IN Filter Ue Pull down Logic Ue
Input for selection of counting direction
Pull up IN Filter Logic
Clock Input (2-wire): Optically and galvanically isolated clock input in accordance with I/O Standard RS-422. The control module clock synchronizes the data transfer between the encoder and the interface electronics. A terminating resistor with a resistance of 120 is incorporated between the clock lines "Clock +" and "Clock -". The pulse diagram is shifted by exchanging the clock lines.
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PEPPERL+FUCHS
Pepperl+Fuchs(R) Inc. * 1600 Enterprise Parkway * Twinsburg, Ohio 44087-2245 * www.am.pepperl-fuchs.com Telephone (330) 486-0001 * FAX (330) 405-4710 * E-Mail: sales@us.pepperl-fuchs.com

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