RENCO RM21 Modular Encoder P/N 83403-001 REV A

RM21 Modular 2.1 Inch Encoder

Features:

Self-aligning. Self-centering.
Self-gapping.
Frequency response up to 200KHz
(all channels).
A,B, and Index with complements.
Positive lock on cover.
Wide range of standard no cost options including: hub bore diameters, terminations, output formats and thru-hole cover.
Robust .060" [1,53mm] chrome on glass code disk.
Meets NEMA ICS-16 standard.

Specifications / Dimensions / Ordering Info / Installation / 3D Model

General Description:

The RM21 Series is a highly reliable, low cost bearingless (modular) encoder built using SMT technology.

The 1-2-3 set-up simplifies troublesome features of typical modular encoders. With a single push on the slide/lock mechanism, the RM21 is aligned, centered and gapped for maximum performance.

No adjustments are required and no mechanical rubbing exists once installed. The cover has an integral positive locking mechanism to eliminate mounting hardware. Sensors are set up differentially under a single LED light source.

Go to Start / Specifications / Dimensions / Ordering Information

Specifications:

(Subject to change without notice)[Metric measurements in square brackets]

MECHANICAL:

Outer Diameter:         2.1 inches [53,34mm]
Height:                 .84 inches [21,34mm]
Moment of Inertia:      17.3 X 10E-05 oz-in sec²(max)
                        [12,22 g-cm²]
Weight:                 2.0 oz max [57g]
Slew Speed:             Resolution dependent
Base & Cover Material:  Glass filled polycarbonate
Code Disc Material:     Chrome on glass (.060")[1,53mm]
Hub Material:           Stainless steel
Max End Play:           +.010  -.040 inches 
                        [+0,25mm -1,02mm](non operational)
                        +.005  -.040 inches
                        [+0,12mm -1,02mm] (2500 count & above)



ELECTRICAL:

Output:                 Square-wave, two-channel quadrature
                              with index (gating options available)
Input Power:            5 VDC ±5%
Output Format:          TI AM26LS31CD or LM2901
Output Frequency:       200 KHz
Flutter:                1% max


ENVIRONMENTAL:

Operating Temp:         -10°C to +100°C
Storage Temp:           -30°C to +110°C
Shock:                  50 G's for 11ms duration
Vibration:              5-2000 Hz @ 10 G's
IP Rating:              IP 40
Humidity:               90% relative (non condensing)



RESOLUTIONS:

Range:                  5 to 2048 PPR (Pulses per Revolution)
Currently available:    5, 10, 40, 50, 60, 75, 100, 104,120
                        125, 150, 180, 192, 200, 250, 254
                        256, 288, 300, 360, 400, 500, 508
                        512, 576, 600, 625, 635, 720, 800
                        900, 1000, 1024, 1140, 1250, 1270
                        1500, 1800, 1885, 2000, 2048

VO output option is not available in resolutions below 250 PPR.


HUB SIZE: (shown in inches)

Specify   Hub Bore +.0004/-.0000 [+0,010/-0,000]
_______   ______________________

 3/16      .1873  [4,757mm]
 1/4       .2498  [6,345mm]
 1/4+      .2501  [6,353mm]
 5/16      .3123  [7,932mm]
 3/8       .3748  [9,520mm]
 3/8+      .3751  [9,528mm]
 1/2       .4998  [12,695mm]
 1/2+      .5001  [12,703mm]
 4MM       .1575  [4,000mm]
 5MM       .1969  [5,000mm]
 6MM       .2362  [6,000mm]
 8MM       .3150  [8,000mm]
10MM       .3937  [10,000mm]
12MM       .4724  [12,000mm]

Encoders ordered with metric shaft size will receive 
metric mounting hardware.



TERMINATION OPTIONS:

Round Cable                       Ribbon Cable
__________________________        ____________________________

      CA18           Wire               R24        R24 (VC/VO)
Pin   Function       Color        Pin   Function   Function

1     +VCC           Red          1     CH A       CH A
2     GND            Blk          2     VCC        +5 VDC
3     CH A           Wht          3     GND        GND
4     CH A NOT       Yel          4     N/A        N/A
5     CH B           Grn          5     CH A NOT   N/A
6     CH B NOT       Blu          6     CH A       N/A
7     INDEX          Orn          7     CH B NOT   N/A
8     INDEX NOT      Brn          8     CH B       CH B
      SHIELD         Drain        9     INDEX NOT  N/A
                                 10     INDEX      INDEX

Standard shielded round cable (CA18) is supplied with
connector P/N AMP 103971-7 or equivalent. This connector
mates with any .025 [0,635mm] sq. non-polarized single row header
(.100 [2,54mm] centers) or may be intalled into single row latching
shroud (AMP P/N 103680-5).



OUTPUT INTERFACES:

VC (VOLTAGE COMPARATOR)
VO (VC W/OPEN COLLECTOR)

     LM2901 (VC with pullup resistor) 
     No complementary signals available
     5 VDC power input TTL compatible
     Output sinks 6mA
     Nominal power requirements 75mA for VC
        and 125mA for VO option




LD (LINE DRIVER)

     TI AM26LS31CD typical output
     26LS32 typical line receiver suggested for user interface
     Output sinks and sources 20mA
     Nominal power requirements 150mA





GATING OPTIONS:

Specify      Gating Option      Index Width
_______      _____________      ___________

0            Ungated            360° ± 20%
1            Gated W/A&B         90° ± 45°

Gating option 0 (Ungated) is standard. Ungated index
is random with channels A and B.

Output Configuration:



Minimum transition to transition edge separation
of A and B is 45° over operating temperature and
frequency. Complementary outputs are not shown for
simplicity. CCW viewing PC board surface.



CLOSURE OPTIONS:

C    4-40 [M2,5] Mtg. No hole Cover
H    4-40 [M2,5] Mtg. Cover with hole

Shaft length longer than .75" [19,05mm] requires
a through-hole cover. A mylar seal is provided 
with through-hole cover.