Core Configuration

Channels: 16 common-ground type supervisory digital outputs (SDO)

Rated Voltage: 120VDC (range 90–150VDC, maximum 160VDC)

Load Capacity: 0.8A continuous / 4A surge (10ms) per channel

Architecture: TMR triple redundancy, 2oo3 voting, quadruple output switch + power transistor

Diagnosis: Voltage / current readback, pulse test, continuous load line monitoring, full coverage fault diagnosis

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

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

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

Output voltage: High level ≥ +90V; Low level ≤ +15V

Output current: 0.8A continuous / 4A surge

Isolation: Channel - Backplane 2500V DC reinforced isolation

Voltage drop: Typical value < 1.5V

Operating temperature: -40°C ~ +70°C

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

Power consumption: Approximately 12W

Size / Weight: Approximately 483×254×51mm / 2.3–2.9kg

Key features (High Voltage SDO positioning)

120VDC high voltage output: Directly drives 120VDC solenoid valves, heavy-duty actuators, high-power relays, suitable for high-voltage safety circuits

16-channel common ground + reinforced isolation: Simplifies wiring, 2500V DC isolation, extremely strong anti-interference

TMR + quad switch architecture: Triple redundant voting + mechanical + semiconductor hybrid output, no leakage current, fail-safe

Full coverage diagnosis: Real-time detection of short circuits, open circuits, overload, fuse breakage, load absence, panel LED indication

T-type enhanced protection: Upgrade of surge and isolation capabilities, nuclear grade / high-voltage operating conditions preferred

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

Typical applications

SIS safety interlock: 120VDC SIL3 level ESD solenoid valve, safety valve, emergency stop circuit

Oil and gas / chemical: High-pressure F&G fire protection system, critical valve control, long-term standby high-power actuators

Power / nuclear power: 120VDC nuclear-grade isolation valve, trip circuit, high-pressure fire protection system

High-voltage safety scenarios: Output remains constant over time, requires high-voltage drive + circuit integrity verification of safety-critical loads

Comparison with the same series SDO

3614E: 8-point 24VDC standard SDO (low power)

3623T: 16-point 120VDC high-voltage enhanced SDO (T-type, nuclear grade)