Model Interpretation

3627：16-channel 120VDC sink-type supervised TMR DO; matching terminal block:3627R; fully hot-swappable; compatible with 8110/8111/8112/8115/8116 rack; counterpart high-side sourcing model = 3626。

Technical Parameters

Electrical Spec

Channel count：16 commoned sink digital output

Rated field voltage：120VDC, operating range 90~132VDC, max withstand 150VDC transient

Per-channel continuous rated current：0.5A, surge current 3.5A/10ms; minimum load ≥25mA for open-circuit diagnosis

Off-state leakage ≤3.5mA per inactive channel

Isolation：2000VDC field-to-backplane galvanic isolation

Backplane power consumption＜12W

Built-in auto-recovery short-circuit protection without replaceable onboard fuse

Safety & Redundancy

Architecture：3 independent circuit TMR 2oo3 hardware voting, single branch fault won’t trigger spurious trip or fail-to-shutdown

Certification：IEC61508 SIL3, TÜV, UL, FM, CE, ATEX approved

Diagnosis：channel-by-channel continuous load monitoring + automatic pulse test + output readback feedback, detect cable break, open load, short circuit, field power loss; front panel PASS/FAULT/ACTIVE/LOAD status LED, fault info uploaded to TriStation engineering software

SOE event timestamp ≤40ms; MTBF≥135000 operating hours

Mechanical & Environment

Single slot 3U standard Tricon rack module

Dimension(W×H×D):115×30×187mm, net weight≈1.15kg, dark green front panel

Operation ambient:−40℃~+70℃; storage:−55℃~+85℃

Humidity range:5%~95%RH non-condensing

Core Functions

High voltage supervised safety output for 120VDC rated field shutdown solenoid & safety relay; periodic non-intrusive pulse test verifies field loop integrity without accidental valve action; TMR fault tolerance avoids safety loop malfunction under single hardware failure; online hot plug replacement during SIS running; pinpoint channel fault location for rapid site maintenance.

Application Scenarios

Offshore & onshore oil&gas：120VDC ESD shutdown solenoid control, flare emergency cut-off valve drive

Refinery & petrochemical：HIPPS high-voltage safety relay output, reactor emergency isolation loop

Thermal power plant：turbine trip high-voltage interlock relay, boiler protection actuator control

Chemical factory：high-voltage explosion-proof solenoid emergency shutdown control

Model Comparison

3627:16Ch sink 120VDC supervised DO |3626:16Ch source 120VDC supervised DO |3623:unsupervised standard 120VDC DO

High voltage sink safety output |High voltage source safety output |General-purpose non-diagnostic auxiliary output