Core Configuration

Channels: 8 channels of common-ground supervisory digital output (SDO)

Output Signal: 24VDC active (wet contacts)

Load Capacity: Maximum 500mA per channel

Architecture: TMR triple redundancy, 2oo3 voting, quadruple output switch with mechanical power relay

Diagnosis: Voltage/current readback, pulse test, continuous monitoring of load line, capable of detecting: fuse blowout, load open/closed, on-site short circuit

Connection: Equipped with dedicated FTA terminal board (including fuse)

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

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

Output voltage: High level ≥ +18V; Low level ≤ +6V

Output current: Maximum 500mA/channel

Isolation: Channel - Back panel 2500V DC

Operating temperature: -40°C ~ +70°C

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

Power consumption: Approximately 9W

Size/Weight: Approximately 483×254×51mm / 2.2–2.8kg

Key features (distinguished from ordinary DO)

Enhanced Supervisory Output (SDO): Pulse test diagnosis + Load loop continuous monitoring, long-term fixed state output can also verify the integrity of the loop, suitable for SIL3 safety-critical loops

8-channel common ground: Simplifies wiring, suitable for centralized driving of 24V solenoid valves, relay arrays

Relay + Semiconductor Hybrid Output: Four-layer switch + mechanical relay, no leakage current, fail-safe

Full Fault Coverage Diagnosis: Real-time detection of short circuits, open circuits, overload, fuse breakage, load absence, panel LED indication

Industrial wide temperature + hot-swappable: Suitable for harsh environments, online maintenance does not affect interlocks

Typical applications

SIS safety interlock: Long-term energized / de-energized SIL3-level ESD solenoid valves, safety valves, emergency stop circuits

Chemical / Oil and Gas: F&G fire protection system, critical valve control, long-term standby actuators

Power Plant / Metallurgy: Boiler / turbine trip circuits, excitation switches, fire protection systems, gas turbine ignition

High safety requirement scenarios: Output remains constant for a long time, and it is necessary to periodically verify the integrity of the loop for safety-critical loads

Comparison with the same series (3614E positioning)

3601E: 16-point 24VDC standard DO (unsupervised)

3602E: 16-point 24VDC dry contact DO

3607E: 16-point 48VDC high-power DO

3614E: 8-point 24VDC enhanced supervisory SDO (SIL3 highest diagnostic coverage)