Parameter
Number of channels: 2 independent channels (A6370D)
Sensors compatible with eddy current (PR6423), Hall (PR9376), and magnetoresistance (VR) sensors
Measurement range 0-20000 RPM (0-20 kHz)
Programmable overspeed threshold, multi-level alarm/shutdown
Response time ≤ 8 ms (typical)
Power supply -24.5 V DC ± 1.5 V, short circuit protection
Output 7 backplane digital outputs (short circuit protection), 3 collector open circuits, and 1 front panel TTL pulse
Communication USB (configuration) RS485、 Optional Profibus DP (A6370D/DP)
Size 3U 19 inch rack, 84HP wide
Working temperature -20 ℃~+65 ℃
The safety level complies with IEC 61508 SIL 2/3 and API 670
Standard configuration: 3 A6370D+1 A6371 backboard, two out of three voting, achieving the highest safety and reliability.
Must be used in conjunction with A6371 backboard and cannot work independently.

Application
Power plant turbine and gas turbine overspeed protection
Safe shutdown of large-scale compressors and expanders in petrochemical industry
SIS system for key rotating equipment in metallurgy and natural gas transportation