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AD37 E-Series Functional Safety Encoder

Single Cable Absolute Encoder for Functional Safety Applications

Key Features

  • Safety Encoder for Functional Safety applications (SIL2 PLd, SIL3 PLe, category 3)
  • Singleturn and Multiturn safety encoder for high performance motion control
  • Single Cable Solution with ACURO® Link interface for 4 wire applications
  • Most compact absolute multiturn encoder of its class (Mounting depth: 29 mm)
  • Resolution: up to 20 Bit ST + 12 Bit MT
  • Wide operating temperature of -40°C to +115°C
  • Encoder data stored in “Electronic Data Sheet (EDS)” inside encoder
  • Motor winding temperature sensor input


AD37S Safety Encoder for Functional Safety


Standard Operating Characteristics
Single-turn Resolution: 20 Bit (Consult Factory for Additional Resolutions)
Multi-turn Resolution: 12 Bit
Supply Voltage: 7-12 VDC
Interface Protocol: ACURO® Link
Funcation Safety Rating: SIL2 PLd, SIL3 PLe, category 3

Mechanical and Environmental

Mounting Type: Shaft with integrated Double-Cardanic coupling hub
Shaft Size: Couples with: 8, 10, 12mm shafts, other options available upon request
Operating Temperature: -40°C to +115°C
IP Rating:  IP40

Technical Data (Functional Safety)

Design Functional Safety (AD37S): SIL2 according to EN IEC 61508, 62061, 61800-5-2, PLd according to EN ISO 13849-1
Design Functional Safety (AD37E): SIL3 according to EN IEC 61508, 62061, 61800-5-2, PLe according to EN ISO 13849-1
MTTFd: 220 Years
Realizable Safety Functions (According to EN 61800-5-2) SS1 (Safe Stop 1)1
SS2 (Safe Stop 2)1 
SOS (Safe Operating Stop) 
SDI (Safe direction) 
SLS (Safe limited speed) 
SLI (Safe limited increment) 
SLA (Safe limited acceleration) 
SSR (Safe speed range) 
SAR (Safe acceleration range)

1 Deceleration Controlled (-d) or ramp monitored (-r)


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