Interroll Drum motor series i, S, S/A, D
Options and accessories
70
Version 4.1 (06/2015) en-US 
Translation of original instruction manual
Encoder type RM44-RLS for the i and D-series
Output: Incremental, RS422A 5 V, push-pull, 24 V 
The resolution INC in increments per drum revolution is calculated as follows:
INC = p x i 
p = number of encoder pulses per rotor revolution
i = gear ratio of drum motor
 
RS422A 5 V Push-pull 24 V
Motor size 80i 
1)
 ... 217i 
D-series
80i 
1)
 ... 217i 
D-series
Supply voltage 5 V ± 5 % 8 - 26 V
Power supply 35 mA 50 mA at 24 V
Resolution p (pulses per revolution) 1024, 512 
2)
1024, 512 
2)
Output signal (RS422A)
A/ , B/  , Z/ A/ , B/  , Z/
Max. cable length 50 m 20 m
Accuracy 
3)
± 0.5° ± 0.5°
Hysteresis 0.18° 0.18°
1)
 For 80i, only available with a special shaft diameter of 25 mm.
2)
 Additional resolutions upon request. Please contact Interroll.
3)
 Worst-case scenario within the operating parameters, including magnet position and 
temperature.
Technical data