Omron SYSMAC CJ-series Temperature Control Unit

Description

• CJ1W-TC101​ → 2 control loops (2 channels), supports Thermocouple (K, J, R, S, T, E, N, B, C, PLII — typical Omron TC list)​ and RTD (Pt100, JPt100)​ inputs, Transistor (NPN/open-collector) outputs​ for driving SSR or solid-state heater drivers, PID with Auto-tuning (AT), Self-tuning (ST), Heater Break Alarm (HBA — detects SSR/heater failure via current transformer or logic), and Loop Alarm (Deviation / PV high/low).
• The module occupies 1 slot in a CJ rack​ (uses 16 input + 16 output words in the CIO area, plus DM area for setpoints/parameters — allocated automatically by CX-Programmer).
• Configuration is done via CX-Thermo (bundled with CX-Programmer / CX-One)​ — you set input type, PID constants (or let AT determine them), alarm types, heater break detection, control period (typically 0.5 s – 99 s for SSR drive).
• Compatible with CJ1M, CJ2M, CJ2H CPUs​ on a CJ1W-PA202/PA205 backplane.

Key Features

• Control Loops: 2 independent loops (CH1 / CH2)
• Sensor Inputs: Thermocouple (K/J/R/S/T/E/N/B/C/PLII) & RTD (Pt100, JPt100) — per channel selectable
• Control Outputs: Transistor NPN (open-collector, 24V DC sink) — typically to SSR for heater; can also be used with external SSR driver module (OMRON G3NA etc.)
• Control Algorithm: PID with Auto-tuning (AT), Self-tuning (ST — adapts to process drift), ON/OFF control also possible
• Alarm Functions: PV high/low, Deviation high/low, Heater Break Alarm (HBA — requires external CT or logic feedback — some TC101 versions support HBA via digital input or external CT like K8AK/K8DS paired)
• Communications / Monitoring: Parameters accessible via PLC memory (CIO / DM) — can be monitored/altered from ladder or HMI linked to PLC
• Country of Origin: Japan (Omron Corporation)

Model & Variant Reference (Omron CJ1W-TC Temperature Control Units — Context)

⚠️ Critical Notes:

1. SSR Drive Output — Not Relay Contact!: CJ1W-TC101 outputs are NPN open-collector transistor (typically 24V DC, 0.1A max sink)​ intended to drive a Solid State Relay (SSR — e.g., Omron G3NA-210B or G3NA-240B)​ which in turn switches the heater AC mains. They are NOT power contacts​ — do NOT connect heaters directly! Use SSR or mechanical contactor with SSR pilot.
2. Wiring — Input Side: TC/RTD wires to dedicated terminals on front of TC101 — follow compensation lead rules (TC = compensating wire; RTD = 3-wire preferred). Shield drain wire to FG terminal on module.
3. CIO/DM Allocation: In CX-Programmer, inserting CJ1W-TC101 auto-assigns a CIO block (e.g., CIO 100–101 for 2 words input status + 2 words output cmd — depends on start address you pick) and DM block for SV/PV/PID params. You read PV from allocated DM word, write SP to another DM word in ladder or via CX-Thermo.
4. CX-Thermo Configuration: After HW insert → double-click TC101 → CX-Thermo launches → set Sensor Type (TC K / Pt100 etc.), Unit (°C/°F), Control Period (SSR drive typ. 0.5 s–2 s), AT mode (Run AT once or always-on ST), Alarm types, HBA (if used). Download to PLC.
5. Heater Break Alarm (HBA): TC101 can detect heater/SSR failure if you provide a CT (current transformer on heater line — e.g., Omron K8DS-CT) feeding a digital input OR some versions allow inference from output state vs expected — check manual for exact HBA method on TC101 (some require external CT + DI wired back to PLC or dedicated HBA module CJ1W-HBA… — TC101 itself monitors output command consistency; true HBA with current sensing may need external CT + logic in CPU or separate HBA unit). Simplified: TC101 alarms if output ON but PV doesn’t rise (soft break detect) — true current-sense HBA often needs external CT.

Technical Specifications (CJ1W-TC101 — 2-Loop TC/RTD Temp Control Unit, SSR Transistor Output)

Warranty & After-Sales

• Factory new units: 12 months warranty
• Refurbished units: 3-6 months warranty (simulated input (mV source for TC equiv.) → verify PV read + SSR output pulse in auto/man mode)
• Technical support for:
  • CX-Thermo setup walkthrough (insert TC101 → launch CX-Thermo → select sensor → set SP range → enable AT → download)
  • CIO/DM address allocation (how to read PV / write SP from ladder or HMI via PLC DM area)
  • SSR sizing & wiring (TC101 NPN → SSR DC- side (G3NA- (+) to +24V, (–) to TC101 output Y□ — sink type); AC heater side in SSR)
  • Thermocouple vs RTD wiring (comp wire for TC; 3-wire RTD preferred; shield drain to FG)
  • Alarm handling (read alarm bits in allocated CIO area → latch/annunciate on HMI)
  • Heater Break / HBA discussion (soft detect vs current CT method)
• Optional: CJ1W-PA202/PA205 PSU, CJ2M CPU, SSR (G3NA-210B / G3NA-240B), thermocouple/RTD sensor, CX-One software

Delivery Time

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

Why Choose Our Store

• Genuine Omron CJ1W-TC series — not third-party clone (TC input linearity critical)
• Global supply network with competitive pricing
• Expertise in Omron CJ temperature loop integration (TC101 + SSR + CX-Thermo + PLC/HMI link)
• Comprehensive technical documentation (TC101 terminal wiring diagram, CX-Thermo screenshot, CIO/DM map, SSR interface example)
• Responsive customer service and support

Applications

• Plastic Injection Molding Barrel Zones: 2–4 zones per rack — CJ1W-TC101 (2 ch) or TC201 (4 ch) — PV to HMI, SP from recipe in PLC.
• Extruder / Blown Film Die Zones: Multiple zones across CJ racks — integrate temp control into main machine PLC program.
• Environmental Chamber / Oven: Heat + optional cool (reverse acting) — PID with AT gets you close first heat-up.
• Retrofit from Standalone TC: Replace E5□C standalone controllers — consolidate into PLC rack, reduce panel space, unify setpoint entry via HMI.
• R&D / Pilot Plant Skids: Easy integration with CJ2M + HMI — temp loops configured in minutes via CX-Thermo.