Core Configuration

Channels: 16 independent isolated dry contacts (SPDT single-pole double-throw)

Output form: Passive dry contacts (no voltage), can be connected to 24VDC - 125VAC/DC

Contact capacity: 2A per channel @ 125VAC / 3A per channel @ 30VDC

Architecture: TMR triple redundancy, 2oo3 voting, relay + semiconductor hybrid drive

Diagnosis: Coil current monitoring, contact status reading, open/closed circuit detection

Connection: Special FTA terminal board (with common terminal and fuse)

Maintenance: Hot-swappable, online replacement without stopping operation Electrical parameters

Module power supply: 24VDC ±10% (back panel)

Contact type: SPDT (Common / Normally Open / Normally Closed)

Rated voltage: Maximum 125VAC / 150VDC

Rated current: 2A @ 125VAC; 3A @ 30VDC

Isolation: Channel - Backplane 2500V AC Enhanced Isolation

Mechanical Life: ≥ 10^6 times

Operating Temperature: -40°C ~ +70°C

Certifications: SIL3, CE, UL, CSA, ATEX Zone 2, TÜV

Power Consumption: Approximately 8W

Size / Weight: Approximately 483×254×51mm / 2.2kg

Key Features (Relay DO Positioning)

Dry Contact Passive Output: Does not rely on module power supply, directly compatible with 24V to 125V AC/DC loads, flexible wiring

SPDT Single-Pole Double-Throw: Normally Open + Normally Closed dual contacts, can achieve "Actuated When On / Deactivated When Off" dual logic

TMR Triple Redundancy + Relay Hard Contacts: No leakage current, fault-safe, reliable contacts, preferred for SIL3 circuits

Full Coverage Diagnosis: Real-time detection of coil faults, contact sticking / disconnection, load short circuit / open circuit, panel LED indication

Wide Temperature + Hot Swap: Suitable for harsh environments, online maintenance does not affect interlock

Independent Isolation Channel: 16 channels fully isolated, no common ground interference, suitable for mixed loads of multiple voltage levels

Typical Applications

SIS Safety Interlock: SIL3-level ESD emergency stop, safety valve, cut-off valve, fire sprinkler valve

Oil/Gas / Chemical: 24VDC solenoid valve, 125VAC contactor, motor trip circuit, ignition system

Power / Power Plant: Boiler / turbine trip, excitation switch, high-voltage disconnect switch control, diesel generator interlock

General Safety Circuit: Requires hard contacts, high isolation, AC/DC compatibility, fault-safe critical loads

Comparison with Series DO (Quick Differentiation)

3601E: 16 points 24VDC active DO (wet contacts, unsupervised)

3607E: 16 points 48VDC high-power active DO

3614E: 8 points 24VDC supervisory SDO (with diagnosis)

3623T: 16 points 120VDC high-voltage supervisory SDO

3636R: 16 points dry contact relay DO (passive, SPDT, AC/DC compatible)