Hohner Automation Ltd.

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Series NAMFPX incremental encoder with junction box connection

and threaded and standard shafts for drawworks








  X X X


G   J / X X X X

Shaft Size




Resolution - ppr

H1 = 1" UNS   |   8 = ABO and Comps.
H2 = 3/4" BSP   |    
H3 = 5/8" BSP   |    
H4 = 1 - 1/4" x 14 tpi   |    
(16mm bore)   |  
H5 = 5/8" x 18 UNF   Electronic Output
H6 = 1 1/4" x 14 tpi     L = 5...24V Extended

(25mm bore)


      Line Driver

H7 = 3/4" UNC

25 = 25mmm      
30 = 30mm      
AA = 1"      


Zone 0, Class 1 Div 1

Technical Data Connection Options
Operating temp: - 20 ...+   60 degrees C T Block Pin
-   4 ...+ 140 degrees F PS GND 1  
Max frequency: 150 kHz PS 5...24 V 2
Weight: 53 oz (1.5 kg) Output A 3
Protection: IP 66M, NEMA 4 Output B 4
Housing: Aluminum Output O 5
Shaft: Stainless Steel Output A inv 6
Bearings: 2 x 6807 ZZ Output B inv 7
Torque: 0.8 oz/in (6 N-cm) Output O inv 8
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 5...24V  


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
Thread the encoder shaft onto the matching threaded shaft and tighten both ends.  Add a bit of copper slip for it not to seize up.  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