440R-S845AER-NNL MSR57P Speed Monitoring Safety Relay.
Security Features Safe Stop (SS) Safe Limited Speed (SLS) Zero speed/static monitoring (Safe Standstill) Safe Direction (SD) Monitoring Door lock monitoring (with Power to Release/Power to Lock modes) Cascade input, used for multi-stage speed chains Input/output (24 VDC system) Encoder interface: Single ended or differential TTL, Sin/Cos, HTL are all acceptable; Maximum input frequency 250 kHz Pulse test source: S11/C21100 mA, short circuit protection Safety control output: 4-channel normally open 2A (14, 24, 68, 78), used for contactor/drive STO circuit Auxiliary signal output: multiple 50-100 mA, short circuit protection, used for status, gate control, and fault indication Gate control dedicated output 51/52: bipolar 1.5 A or cascaded 20 mA, can directly drive electromagnetic locking pin performance level Compliant with EN ISO 13849-1 Cat.4/PL e, IEC 61508/EN 62061 SIL CL 3 System response time ≤ 20 ms (input safety contact disconnected) The overspeed threshold, acceleration threshold, and direction window can all be set through knobs/software Electrical and Environmental Power supply: 24 VDC (0.8... 1.1 × Un), PELV/SELV, maximum total current 10.4 A Power consumption: ≈ 5 W Working temperature: -5...+55 ° C; relative humidity 90% RH, no condensation Protection level: body IP40, terminal IP20; 35mm DIN rail installation Terminal torque 0.6... 0.8 N · m, wire 0.2... 2.5 mm 2“
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