Omron SYSMAC C-series / C500 40-Pin I/O Connector Plug

Description

• C500-CE401​ → 40-position (40-pin) rectangular connector, solder cup type (90° / right-angle — wires soldered to pins on the back of the plug), with plastic hood/cover (connector shell)​ — plugs into the 40-pin I/O port on C500/C200H/C200HS I/O units, C500 Analog I/O modules, and CS1/CJ1 special I/O units that specify C-series 40-pin connector interface.
  It is NOT a safety relay​ and NOT a terminal block end plate​ — it is the pluggable I/O interface connector​ that users wire to their field signals (sensors/actuators), then plug into the PLC I/O module’s 40-pin receptacle (FCN-361J040-AU type on module).
• Alternative C500-CE40x family:
  • C500-CE401​ = 40-pin, solder type (right-angle), with cover — listed item
  • C500-CE402​ = 40-pin, crimp type (IDC / crimp contacts — less common, needs contact insertion tool)
  • C500-CE403​ = 40-pin, solder type (similar to CE401 — some docs show no cover or slight variant — CE401 includes cover/housing)
  • C500-CE404​ = 40-pin, solder type but straight/horizontal exit (180°) — flat against backplane​ — used on CS1W-CT021 counter etc. where clearance demands flat cable exit
• For converting the 40-pin connector to screw terminals (instead of hand-soldering CE401), Omron offers XW2B-40G4 / XW2B-40G5 / XW2D-40G6 Terminal Block Conversion Units​ + XW2Z-___ cables — popular for field wiring.

Key Features

• Type: 40-pin male connector plug (mates with FCN-361J040-AU 40-pin female receptacle on PLC I/O module)
• Termination: Solder cup (user solders wire to pins — right-angle / vertical mount style)
• Includes: Connector housing + metal shell/cover (screw-fastened to module when plugged in)
• Pitch: 1.27 mm (0.05″) — Fujitsu FCN-360/361 series compatible
• Wire Size: Typically AWG 26–28 stranded (recommended for solder cups — pre-tin wires)
• Country of Origin: Japan (Omron Corporation)

Model & Variant Reference (Omron C500-CE40x 40-Pin Connector Family)

⚠️ Critical Notes:

1. This Is a Connector Plug — NOT a Relay / NOT an End Plate!: C500-CE401 is the 40-pin plug you solder wires to, then insert into the PLC I/O module’s 40-pin socket. C500 I/O modules (analog, temp, high-func) and CS1/CJ1 special units (CT021 etc.) use this. If your C200Hα / CQM1 I/O has built-in screw terminals​ — you do NOT need this. If it’s an older C500 I/O or CS1W-CT021 counter — you DO need the CE40x connector OR the XW2B terminal-block converter.
2. Soldering Required: CE401 requires soldering 40 wires (AWG 26–28 stranded, pre-tinned) into solder cups. Observe pin numbering (odd pins = one row A1–A20, even = B1–B20 typically — check module manualfor pin-function map: Input 00–15 = specific pins etc.). Use flux & avoid cold joints.
3. Alternative = XW2B Terminal Block Converter: If you prefer screw terminals over soldering → buy XW2B-40G4 (M2.4 screw, 40-pt) or XW2B-40G5 (M3.5 screw, 40-pt)​ + XW2Z-100B (1m cable — connects XW2B to module 40-pin socket). This eliminates hand-soldering.
4. CE401 vs CE404 Exit Direction: CE401 = wires exit perpendicular to module face (right-angle / vertical mount style — common on C500 I/O racks); CE404 = wires exit parallel to module face (flat / straight — used on CS1W-CT021 counter where ribbon lays flat against unit). Both are solder. Verify physical clearance before ordering — on C500 I/O racks CE401 is standard; on CS1W-CT021 either works but CE404 gives neater flat cable route.
5. Pin Numbering: Looking at the module’s female receptacle (FCN-361J040-AU)​ with the keyway on top — Row A (top) = pins A1–A20 (odd numbers on left? Actually consult Omron pinout diagram: typically A-row = pins 1–20 (odd/even split — see module manual — e.g., C500-AD001 Analog Input: Ch1+ = A1, Ch1– = A2 …). CE401 plug pins are numbered correspondingly — match wire label to module manual pin-function table.

Technical Specifications (C500-CE401 — 40-Pin Solder-Type I/O Connector Plug with Cover)

Warranty & After-Sales

• Factory new units: 12 months warranty (against molding defect / pin plating issue)
• Refurbished units: 3-6 months warranty (NOS — visual & pin continuity test)
• Technical support for:
  • Confirmation of need (CE401 = C500/C200H I/O 40-pin modules OR CS1W-CT021 with right-angle exit — if you have built-in-terminal I/O like C200Hα CPM1A/CP1W you do NOT need this)
  • Pinout reference (provide pin-function map per target module — e.g., C500-AD001 / C500-DA001 / CS1W-CT021 — tell us which module you’re interfacing)
  • Soldering tips (use fine tip iron <350°C, pre-tin wire & cup, avoid bridging adjacent pins — use magnifier)
  • Alternative suggestion: XW2B-40G4 (40-pt screw terminal block conv.) + XW2Z-100B (1m cable) if you want no-solder field termination
  • CE401 vs CE404 orientation clarification (right-angle vs flat-exit for CS1W-CT021 clearance)
  • Cross-ref to C500-CE404 (flat exit 40-pin solder) or XW2B terminal block units
• Optional: XW2B-40G4 / XW2B-40G5 Terminal Block Converter, XW2Z-100B / XW2Z-050B Cable (connects XW2B to module), Wire (stranded AWG 26-28 tinned), Flux / Solder

Delivery Time

• Standard delivery: 3-5 working days (stock NOS)
• Express shipping available upon request

Why Choose Our Store

• Genuine Omron C500-CE series connectors — correct Fujitsu FCN-361 mate (generic substitutes may have tolerance fit issues / pin plating mismatch)
• Global supply network with competitive pricing (especially legacy C500 accessories)
• Expertise in Omron C500 / C200H / CS1 I/O interfacing (40-pin connector pinouts, XW2B alt., CE401 vs CE404 choice)
• Comprehensive technical documentation (40-pin pin-numbering diagram per common module — AD001 / DA001 / CT021, CE401 solder cup orientation sketch)
• Responsive customer service and support

Applications

• C500 / C200H / C200HS I/O Module Wiring: Analog I/O (C500-AD001/DA001), Temperature Control (C500-TC…), High-func units — field wires soldered to CE401 → plug into module.
• CS1W-CT021 High-Speed Counter / CS1W-PWM: Connect encoder A/B/Z or PWM outputs via CE401 (or CE404 flat-exit) — solder shielded twisted pair to pins per counter manual.
• Legacy System Maintenance / Spare: Exact C500-CE401 — replace lost/damaged I/O plug on existing C500 rack.
• Custom Breakout / Test Fixture: Build flying-lead harness to 40-pin C500 I/O port for bench testing module function.
• Alternative to XW2B: If you prefer screw terminals → we also stock XW2B-40G4 + XW2Z cable — ask for bundle quote.