Basics of Incremental Encoders with RS422 TTL (EN)

email: sales@impulseautomation.co.uk web: www.impulseautomation.co.uk Information shown in these data sheets are for guidance purposes only, no liability is accepted for any errors or omissions. The designer or user is solely responsible for the safe and proper use of these parts, assemblies or equipment described. OUTPUT CIRCUIT TECHNICAL DATA CABLE LENGTH Basics of Incremental Encoders Outputs - RS 422 - TTL + DC 5 V Screen 1 Output Recommended input circuitry 1 Cable screen:

- not existing for RI 32, 38, 42, - connected to encoder housing for RI 30, 36, 58, 59, 76 and RA 70 Code letter R = RS 422 + Alarm3 (with U = DC 5/10 -30 V) B T = RS 422 + Sense4 (only with U = DC 5 V) B Output signals shaft turning clockwise (cw) Square wave pulses seen from front (TTL) for channels A, B, N of encoder and their inverted signals A, B, N Delay times at 1,5 m cable ≤100 ns ≤100 ns Pulse shape Pulse duty factor 1:1 Phasing 90° ±25° electrical Symmetry 180° ±25° electrical Max. Output frequency 300 kHz Output voltage DC 0 ... +5 V 2 Output level H ≥ DC 2,5 V / L ≤ DC 0,5 V (TTL-level) Output load max. ±30 mA Short circuit protection with U = DC 5 V:

only 1 channel at a time for max. 1 s B (Standard RS 422-driver) with U = DC 10 - 30 V: short circuit proof for all channels B due to integrated controller Pole protection of U with U = DC 5 V: no with bei U = DC 10 - 30 V: yes B B B 1 Distance A to B is at least 0,45 µs (at 300 kHz) 3 Description - see Outputs Alarm 2 also for U = DC 10- 30 V 4 Description - see Outputs Sense B depending on voltage and fequency (at 25 °C) 1: Length RS 422 10 m DC 5 V, 300 kHz 50 m DC 5 V, 300 kHz 100 m DC 5 V, 300 kHz 1 with Hengstler accessory cables Doc No: EB0003 Rev:

001 Impulse Automation Limited United Kingdom Company Registration 665193 Page 2015-03-10 1 3 Code letter R = RS 422 + Alarm (with U = DC 5/10 -30 V) B T = RS 422 + Sense4 (only with U = DC 5 V) B Output signals shaft turning clockwise (cw) Square wave pulses seen from front (TTL) for channels A, B, N of encoder and their inverted signals A, B, N Delay times at 1,5 m cable ≤100 ns ≤100 ns Pulse shape Pulse duty factor 1:1 Phasing 90° ±25° electrical Symmetry 180° ±25° electrical Max. Output frequency 300 kHz 2 Output voltage DC 0 ... +5 V ≥ ≤ Output level H DC 2,5 V / L DC 0,5 V (TTL-level) Output load max. ±30 mA Short circuit protection with U = DC 5 V: only 1 channel at a time for max.

1 s B (Standard RS 422-driver) with U = DC 10 - 30 V: short circuit proof for all channels B due to integrated controller Pole protection of U with U = DC 5 V: no with bei U = DC 10 - 30 V: yes B B B

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