MR345 Rotary Incremental Encoder

ZapFree

MR345

ZapFREE® Size 125mm Fiber Optic Incremental Encoder

The MR345 ZapFREE^®Heavy Duty 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	3600 RPM Continuous
Mechanical Parameters
Rotor Moment of Inertia	6.65E-4 kg*m.
Starting Torque	1.79E-3 N*m
Max Shaft Loads	Radial = 300N (67 lbf), Axial = 200N (22 lbf)
System MTBF	L10 bearing life calculated at 50% of max radial and axial load at 3000 RPM: 1.128E+05 hours (12.9 years)
Optical Interface
Optical Interface	ODVA IP-LC Receptacle, 62.5/125μm Graded Index Fiber, 0.275NA, Type OM1
Link Length	Up to 2000m (3280 ft). with MR320 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
IECEx	EPL Mb/Gb/Gc/Db/Dc
Environmental Attributes
Temperature/Humidity	Operating: 40°C to +80°C ; Storage : 40°C to +80°C, 0%-95% RH (non-condensing
Ingress Protection	IP67 (temporary submersion)
Physical Attributes
Housing Dimension	Ø 125mm x 92mm
Unit Weight	1505 g (53 oz)
Materials	Body: Anodized Aluminum; Shaft 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” electronic-based encoders
Outdistances copper, link lengths to 2000m
Temperature range -40°C to +80°C;
Special versions can be engineered for radiation and high temperature environments
Compatible with MR340-1 DIN Rail Mount Controller