I. Product Overview (Core Parameters)

1) Basic Specifications

Model: 9668-110 (24VDC, Relay Output, 16 Points, Enhanced)

Signal Type: 24VDC Relay Output (Dry Contact)

Channel Count: 16 Points / Board; 32 Points RO Module requires 2 Terminal Boards

Load Voltage: Maximum 30VDC / 120VAC (Relay Contact Voltage Rating)

Contact Capacity: 3A per channel @ 24VDC (Resistive Load)

Protection: 3A Slow-Melting Fuse per channel, with Independent FUSE Fuse Break Indicator

Relay: Built-in 16-channel 24VDC Coil Relay, TMR Triple Redundancy Architecture

Isolation: ≥1500VAC Field - System Isolation

Test Points: Each Channel has Voltage Test Terminal for Online Measurement

Common Terminal: Grouped Common Terminal, Supports Multiple Circuit Independent Power Distribution

Safety Level: SIL3 (IEC 61508)

Operating Voltage: 24VDC ±10% (Coil Power Supply)

Temperature: -40℃ ~ +70℃ (Industrial Wide Temperature)

Certifications: CE, UL, CSA, ATEX/IECEx

Installation: 35mm DIN Rail / Panel Mounting

Compatible Modules: 3636R, 3637R (Tricon 32-Point Relay Output Module)

Connection Cable: Special Flat Cable (e.g., 9668-110 Pairs of Accessories)

2) Panel Indicator Lights

CH01–CH16 (Green): Lit when corresponding relay engages

PWR (Green): 24VDC Power Supply Normal on Terminal Board

FUSE (Red): Lit when any channel fuse blows (Single Channel Position)

3) Comparison of the Same Series (9668 vs 9662)

9668-110: Enhanced RO Terminal Board (With Test Points + Diagnosis + High Current Relay)

9662-110: Standard RO Terminal Board (Basic Relay + Indicator Lights)

9662-610: 24VDC Active DO Terminal Board (No Relay, Transistor Output)

9662-810: 120VAC Relay Output Terminal Board (High Voltage AC)

II. Operating Instructions (Installation / Wiring / Maintenance)

1) Installation Configuration

32-Point RO Module (3636R/3637R): 1 Module paired with 2 9668-110 (1–16, 17–32 each 1 unit)

Installation Location: Cabinet DIN Rail, Close to Load Side, Shorten High Current Wiring

Hot Swap: Supports Online Replacement, Does Not Affect System Operation

2) Wiring Specifications (24VDC Load Circuit)

Power Side: 24VDC+ → PWR+; 24VDC‑ → PWR–

Load side: CHx (NO/COM) → Load; The other end of the load is connected to 24VDC -

Wire diameter: 1.5–2.5 mm² multi-strand copper wire, equipped with crimp terminals

Fuse: 3A slow-acting; The red light of FUSE turns on immediately, then power is cut off and the fuse is replaced

3) Fault handling

FUSE is on: Corresponding channel short circuit / overload → Replace the 3A fuse, check the insulation of the load

CH is not on: Check the module output, 24VDC power supply, relay status, load wiring

PWR is not on: Check the 24VDC power supply, flat cable connection, and the main fuse of the terminal board