Servomech ATL 02, Installation, Operation And Maintenance Manual, Page: 13 / 21

Servomech S.p.A. 02.02-05-08-10-11-12.E - Rev. 00 Date (M/Y) 12/19 13
6.4 Rotary encoder EH38
Rotary encoder EH38 is available only for ATL 10 and BSA 10-11 with DC motor.
Encoder EH38 – TECHNICAL FEATURES
Transducer type Optical encoder, incremental, bi-directional
Resolution 100 or 500 pulses per revolution
Output
PUSH-PULL
2 channels (A and B, phase difference 90°)
channel ZERO
Input voltage 8 ÷ 24 V DC
No-load current 100 mA
Max commutable current 50 mA
Cable length 1.3 m
The EH38 encoder must be connected to the electric control circuit as shown in the following WIRING
DIAGRAM:
Figure 6.3 – Encoder EH38
NOTE: the safety clutch cannot be used with encoder EH38, because while the clutch is slipping the
encoder position would be lost.
Following table shows n° of pulses for 1 mm of stroke, for each size and ratio:
N° of pulses for 1 mm of stroke
Encoder resolution
100 ppr 500 ppr
ATL10
RH2 50 250
RV2 78 390
RN2 156 781
RL2 312 1562
RH1 100 500
RV1 156 781
RN1 312 1562
RL1 625 3125
RXL1 1250 6250
BSA10
RH1 80 400
RV1 125 625
RN1 250 1250
RL1 500 2500
RXL1 1000 5000
BSA11
RH2 40 200
RV2 62 312
RN2 125 625
RL2 250 1250
RXL2 500 2500