Encoder - Incremental SCH94
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Christian Willmann
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- Order number: SCH94FO
Characteristics:
Hollow Shaft Fiber Optic Encoder - Ø 94 mm
Dual Output Option... more
Product information "Encoder - Incremental SCH94"
Characteristics:
- Hollow Shaft Fiber Optic Encoder - Ø 94 mm
- Dual Output Option (Digital & Fiber Optic)
- Fiber Optic Transmission up to 2,000 meters (~ 1.25 miles)
- No Degradation of Encoder Signal from Electrical Disturbances
- High Encoder Frequency and Low Transmission Delay
- Added Safety by use of two Redundant Fibers
- Built-in Transient Suppression Module
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Technical data "Encoder - Incremental SCH94"
Electrical Specifications
| Code | Incremental |
| Resolution | 1 to 10.000 ppr (pulses per revolution) |
| Supply Voltage | 4.5 Vdc min. to 30 Vdc max. ** |
| Output Voltage | Low: 500 mV max. at 10 mA High (Vin - 0.6) at -10 mA (Vin - 1.3) at -25 mA |
| Current Consumption (typical) | 250 mA @ Vsup = 5 V 110 mA @ Vsup = 15 V 70 mA @ Vsup = 30 V |
| Frequency Response | 100 kHz max. ** |
| Accuracy | +/- 0.8 arc-min. |
| Electrical Protection | Output short circuit, reverse polarity (on some versions only) and transient surge protected through built-in protection module (see TSM details on website) |
| Noise Immunity | EN61000-6-2:2005 (industrial environments) Electromagentic compability (EMC) EN61000-6-3:2007 (residential, commercial, and light-industrial environments) for Electrmagentic compability (EMC) |
Electrical Specifications - Digital Outputs
| Outputs | OL7272 Differential Line Driver - HTL, TTL and RS422 compatible |
| Supply Voltage and Output Specifications for various Output Standards |
TTL: Vsup = 5V +/- 10% Vhigh ≥ 4.3V @ Iout = -16 mA Vlow ≤ 0.5V @ Iout = 16mA RS422: Vsup = 5V +/- 10% Min. diff. load (Zo): 100 Ω Vdiff. ≥ 2.9V @ Zo = 100Ω Vhigh ≥ 3.8V @ Zo = 100Ω Vlow ≤ 0.9V @ Zo = 100Ω HTL: Vsup ≥ 9V – 30V Vhigh ≥ Vsup - 1.8V @ Iout = -20mA Vlow ≤ 0.8V @ Iout = 20mA |
| Output Current | 40 mA max. load per output channel ** |
| Output Format | Two channel (A,B) quadrature with Index (Z) and optional complementary (A-, B-, Z-) outputs |
| Phase Sense | A leads B clockwise (CW) from the mounting end of the encoder |
| Index | Gated with Channels A and B high |
Optical Specifications - Fiber Optic Outputs
| Optical Wavelength | 850 nm (Infrared) |
| Transmission Distance | 1.000 meters 2.000 meters - option |
Mechanical Specifications
| Material | Housing: Aluminium Cap: Aluminium Shaft: Stainless Steel (AISI 303) |
| Weight | Encoder: Approx. 2.300 gr (81.13 oz) |
| Bearing Life | > 1.9 x 1010 revolutions at rated load |
| Shaft Speed | 2.200 rpm max. IP66 3.000 rpm max. IP65 - option |
| Starting Torque | < 0.1 Nm (14.16 oz-in) at 25°C |
| Mass Moment of Inertia | 31 gcm2 (4.39 x 10-4 oz-in-sec2) |
| Shaft Loads | Axial: 200 N (45 lbs) max. Radial: 400 N (90 lbs) max. |
Common Specifications with Fiber Optic Receiver
| Compatible Fiber Optic Receiver | DINJB-RX-INC or equivalent |
| Update Rate | 1.04 million updates / second ~ 0.96 μsec. / update |
| Transmisson Delay | ≤ 3 μsec. Approx. 1 μsec. must be added per 200 meters of fiber optic cable |
| Optical Fiber Connectors | Standard ST Insertion loss ≤ 0.7 dB (≤ 0.4 dB recommended) |
| Recommended Optical Fiber | 62.5 / 125 μm, multimode (TUG 651) |
| Operating Temperature | -40° to +85°C |
| Storage Temperature | -40° to +85°C |
| Shock | 100 G / 11 ms |
| Vibration | 10-2.000 Hz /10 G |
| Bump | 10 G / 16 ms (1.000 x 3 axis) |
| Humidity | 98% RH without condensation |
| Enclosure Rating | IP66 / Nema 6 (approx.) IP65 / Nema 4 (approx.) - Option chromitAL TCP passivation |
| Non-conductive Hollow Bore | Non-conductive ceramic insert for shaft insulation; up to 2.5 kV |
Connection Options
| Cable | 8 leads (0.75 mm2, 19 AWG) twisted pairs; shielded; halogen free |
| Connectors | 12-pin M23 connector |
** = It is recommended user, not to combine max. values for all 3 paramteres
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