Hohner Automation Ltd.

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Series NAMFPX NAMUR large incremental encoder

up to 50 mm for drawworks








  X X L


G   R / 0 X X X

Shaft Size



Resolution - ppr

Standard Bore | 8 = ABO and Comps
40 = 40 mm |  
50 = 50 mm |  
Threaded shaft male/female |  
L1 = 1.5" NPT |  
  Electronic Output
  L = 5...24 V Extended
  Line Driver


Zone 0, Class 1 Div 1

Technical Data Connection Options
Operating temp: - 20 ...+   60 degrees C Cable 2 meters Connector
-   4 ...+ 140 degrees F PS GND Black Any type of connector with more than 4 pins and an IP rating of 66 can be used, pin allocations will determined by end customer.  More than one connector is possible as well.
Max frequency: 150 kHz PS 5...24 V Red
Weight: 53 oz (1.5 kg) Output A White
Protection: IP 66M, NEMA 4 Output B Blue
Housing: Aluminum Output O Yellow
Shaft: Stainless Steel Output A inv Green
Bearings: 2 x 61811 ZZ Output B inv Violet
Torque: 0.8 oz/in (6 N-cm) Output O inv Brown
Shaft load: Supports its own weight    
Humidity: Up to 98% permissible    
Speed:  3000 RPM    
Max. ppr 5000    
Shock: 10g (6 msec)      
Vibration: 5g (500 Hz)      
Output for Channels  


Diagram is shown clockwise


To use the encoder in a hazardous area, a safety barrier or galvanic isolator has to be used.  Our six channel barrier and isolator work with our encoders.  Isolator Data Sheet
IP 66M
ATEX  [Certificate]
IECEx  [Certificate]
CSA [Certificate]
GOST-CU [Certificate]
Mounting Instructions

Slide encoder onto shaft.  To keep encoder from rotating: have a pin to prevent rotation in one of the mounting holes, or a bracket bolted onto the mounting holes, or simply tie wrap the cable.  Whatever is done, ensure there is a bit of play between encoder and mounting arrangement to prevent bearing damage.  Hook up the encoder with the connections as described.  Make sure power supply meets specifications.


Hohner Automation Ltd. Tel: +44 (0) 1978 363-888
Whitegate Industrial Estate Fax: +44 (0) 1978 364-586
Wrexham LL13 8UG E-mail: uksales@hohner.com
United Kingdom Web: www.hohneronline.co.uk