This document provides specifications for Rotapuls incremental encoder modules, including the IM30, IM31, and IM56 series. It lists the environmental and mechanical specifications, as well as the electrical specifications including output signals, phase shift, pulse rate, power supply, and output frequency for each series. Materials used for the housing, hub, and disk are also included.

1. ROTAPULS
Incremental encoder modules
series IM30 • IM31 • IM56
www.lika.biz
• Data-sheet
ENVIRONMENTAL SPECIFICATIONS • User manual
Operating temperature range: -40°C +70°C (-40°F +158°F)
Storage temperature range: -40°C +100°C (-40°F +212°F)
Option: • Operating temperature range: -40°C +100°C (-40°F +212°F)
MECHANICAL SPECIFICATIONS
Dimensions: see drawing
Hub: Ø 4, 5, 6*, 6.35 (1/4”)*, 8 mm
*available with push-on hub option
Electrical connections: pin or 15 cm flat cable
ELECTRICAL SPECIFICATIONS
Output signals: IM30: AB
IM31, IM56: AB0
Phase shift: 90° ± 8
Pulse rate: IM30: 96, 100, 192, 200, 256, 360, 400, 500, 512
IM31: 50, 100, 200, 256, 360, 400, 500, 512, 1000, 1024
IM56: 1000, 1024, 2000, 2048
Power supply: +5V ±10%
Output circuit: TTL
Output current (per channel): 5 mA max.
Output frequency: IM30: 20 kHz
IM31, IM56: 100 kHz max.
Input current: 40 mA max.
Option: • Line Driver output circuit
MATERIALS
Housing: polyethylene
Hub: aluminium or plastic
Disk: Mylar
1 Specifications subject to changes without prior notice

2. www.lika.biz
IM30
2

3. www.lika.biz
IM31
3

4. www.lika.biz
IM56
4