MR344
ZapFREE® Hollow Shaft Fiber Optic Incremental Encoder
The MR344 ZapFREE® Heavy Duty Hollow Shaft Fiber Optic Incremental Sensor is an entirely passive, intrinsically safe, fiber optic incremental rotary encoder – ideal for a wide range of harsh and hazardous environmental applications. The passive, all-optical sensor connects to the remote controller via a standard duplex 62.5/125 multimode optical fiber link.
The remote MR340 Controller Module transmits and converts optical signals to/from the sensor. The Controller’s multiple built-in interfaces insure compatibility with industry standard motor drives, PLCs, quadrature counters and motion control systems.
Specifications
| Measurement Parameters | |
| Resolution | 1024ppr |
| Max Speed |
3,000 RPM continuous (MR320 Quadrature Outputs and Analog Outputs activated ONLY) 3,600 RPM short term (< 1 minute) (NOTE: At 3,000 RPM, MR344 housing temperature rises by 25°C above ambient due to bearing friction. Environmental temperature must be reduced accordingly. There is also a trade-off between operating speed and use of the MR340 auxiliary functions (analog outputs, divider, multiplier, etc.). Contact Micronor to discuss your requirements. |
| Mechanical Parameters | |
| Moment of Inertia | 2.06E-4 kg*m. (Pocket Hole version), 2.09E-4 kg*m. (Through Hole version) |
| Starting Torque | 3.53E-3 N*m (Pocket Hole version) |
| System MTBF | L10 Bearing life calculated at 2500 RPM: 2.12E+07 hours (2411 years) |
| Optical Interface | |
| Optical Interface | LC Duplex, 62.5/125μm Graded Index Fiber, 0.275NA, Type OM1 |
| Link Length | Up to 2000 meters with MR340 Controller |
| Explosive Atmospheres | Inherently Safe, Simple Mechanical Device |
| EX Classification | Inherently safe, simple mechanical device when used with MR340 Controller |
| ATEX | EPL Mb/Gb/Gc/Db/Dc |
| IEC EX | EPL Mb/Gb/Gc/Db/Dc |
| Environmental Attributes | |
| Temperature/Humidity |
Standard: -40°C to +80°C, 0%-95% RH (non-condensing) Extended: -60°C to +125°C, 0%-95% RH (non-condensing) |
| Ingress Protection |
Through Hole Version=IP54 (dust protected, protected against splashing water) Pocket Hole Version=IP66 (dust proof, protected against powerful water jets) |
| Physical Attributes | |
| Housing Dimension | Ø 100mm x 49mm |
| Unit Weight | 655 g (23 oz) |
| Materials | Body: Anodized Aluminum; Shaft Clamp and Bearings: Stainless Steel |
Specifications subject to change without notice
Features
- 100% passive sensing design – no electronics whatsoever
- Sensor can be installed in all manner of hazardous locations and potentially explosive atmospheres – mines, gas and dust
- Immune to EMI and RFI for safe use in and around medical equipment, VFD drives and other “noisy” industrial environments
- Immune to lightning and high voltage which “zaps” electronics-based encoders
- Outdistances copper, link lengths to 2000m
- Standard Temperature range: -40°C to +80°C;
- Extended Temperature option: -60°C to +125°C
- Special versions can be engineered for radiation and thermal-vac environments
TO ORDER
Call 805.389.6600
Ordering Information
| MR344-F38XYYYZ | Where X=Bore/IP Option, strong>YYY=Optical Interface, Z=Temperature Range X Options: (Blank)=Through Hole-IP54, P=Pocket Hole-IP66 YYY Options: C1R5=1.5m Pigtail , C03=3m Pigtail Z Options: (Blank)=Standard -40°C to +80°C, E=Extended -60°C to +125°C |
| MR344-99-XX | Shaft Adapters, where XX=Shaft OD Option For 8mm, order MR344-99-01 For 10mm, order MR344-99-02 For 12mm, order MR344-99-03 For 14mm, order MR344-99-04 For 15mm, order MR344-99-05 For 16mm, order MR344-99-06 For 18mm, order MR344-99-07 For 20mm, order MR344-99-08 For 25mm, order MR344-99-09 For 30mm, order MR344-99-10 For 32mm, order MR344-99-11 For 0.5″, order MR344-99-12 For 0.625″, order MR344-99-13 For 0.75″, order MR344-99-14 For 1″, order MR344-99-15 For 1.25″, order MR344-99-16 |
| MR314A | Long Tether Arm Kit |
| MR340-1 | DIN Rail Mount Controller |
Quick Ship Configurations
| MR340-0 | OEM PCB Controller |
| MR340-1 | DIN Rail Mount Controller |
| MR344-F38C1R5 | Hollow Shaft Encoder, 1024ppr, Though Hole, IP54. 1.5mm Pigtail |
| MR344-F38PC1R5 | Hollow Shaft Encoder, 1024ppr, Though Hole, IP66, 1.5m Pigtail |
| MR344-99-03 MR344-99-05 MR344-99-12 MR344-99-13 MR344-99-14 MR344-99-15 |
Shaft Adapter, For 12mm OD Shaft Shaft Adapter, For 15mm OD Shaft Shaft Adapter, For 0.5″ OD Shaft Shaft Adapter, For 0.625″ OD Shaft Shaft Adapter, For 0.75″ OD Shaft Shaft Adapter, For 1″ OD Shaft |
| MR314A | Long Tether Arm Kit |
