Elmo SERVO AMPLIFIER DBP SERIES - Manual (Page 14)

13
DBP - Rev 6/93
3.3 Sensors specification
3.3.1 Encoder
The encoder must be incremental with two TTL channels in quadrature and 90
°
phase shift.
High/Low input definition: Vil<1.5V, Vih>3V
Input voltage range: 0-15V
Input hysteresis 1.5V
Input impedance: 1Kohm to 5V.
Maximum frequency main encoder: 150KHz
Maximum frequency auxiliary encoder: 250KHz
Noise protection by analog and digital filters
When left open the input is internally pulled to high level.
3.3.2 Resolver
Resolver Option Feature:
* 10,12,14 and 16 bit resolution set by the user.
* Maximum tracking rate 1040 rps (10 bits).
* Velocity output.
* Encoder A, B, outputs + programmable index output.
Reference parameters:
Max. voltage: 20Vptp or 7Vrms
Minimum output voltage: 2Vrms
Max. current: 80mA
Max frequency: 20KHz outputs: