Hohner Automation Ltd.

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Series 55 NAMUR (DIN 19234) stainless steel encoder up to 20mm

5   5 X X - 0 2 X R - X X X X

Shaft Size



Resolution - ppr

10 = 10 mm 1 = 2m cable attached to 4 pin
12 = 12 mm F = 4 pin plug

14 = 14 mm

16 = 16 mm

20 = 20 mm


Zone 0, Class 1 Div 1

Technical Data Connection Options
Operating temp: - 20 ...+   60 degrees C 4 pin plug Cable
-   4 ...+ 140 degrees F  + Loop A 1 Red
Power supply: 24V   - Loop A 2 Black
Weight:    16 oz (0.45 kg)  + Loop B 3 White
Protection: IP 64S, NEMA 3   - Loop B scn Green
Housing: Aluminum

Shaft: Aluminum
Bearings: 2 x 61805 2RZ
Torque: 0.4 oz/in (3 N-cm)
Humidity: Up to 98% permissible


Speed:  2000 RPM max. B is phased 90 degrees in front of A in cw direction
Shock: 10g (6msec)
Vibration: 5g (500 Hz)
Shaft load: Radial / axial max 10 lbs
Inertia: 30 gm-cm2
Max. ppr 512

Limited by frequency response of barrier:

Slower for higher resolution.  Typical is about 2000rpm for 100ppr

Best suited to work with the following isolators: P+F KFD2 SOT2 EX2
IP 64S
ATEX [Certificate]
IECEx [Certificate]
CSA [Certificate]
GOST-CU [Certificate]
Mounting Instructions

Mount fixture to the encoder with three self-tapping no. 8 screws and three no. 8 washers.  Slide the encoder onto the shaft.  With the setscrew, tighten the hollow shaft onto the shaft.  Mount the tether on the machine or motor-frame.  The tether can be bent to adapt to any surface.  This assembly allows the encoder to float and increases the lifetime of the bearings.  Connect the encoder as per wiring specifications.  Make sure power supply is within the proper voltage and current rating.  Encoder can be mounted with the setscrew on the machine side or on the opposite side for either CW or CCW.  See datasheet for CW and CCW directions of the outputs.


Technical data for tether:  0.3 mm stainless steel sheet


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