Description
Product Introduction
The Danaher CX312B6 is a microprocessor-based timer/counter from the CX300 Cycl-Flex series. It mounts in a standard 15-terminal CYCL-FLEX plug-in case, allowing quick removal for programming or replacement without rewiring the panel. The unit operates from 240 VAC 50/60 Hz and provides both a 10 A DPDT instantaneous relay output and a 1 A solid-state output.
Internal rocker switches select time or count operation, time range, and start mode. An LCD display shows the process value, and the inhibit input accepts 120 VAC or 120 VDC signals. In the field this timer replaces older mechanical or less flexible electronic units while keeping the same panel footprint and wiring. Accuracy and repeatability are high enough for most industrial sequencing, delay, and cycle-timing tasks.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Series | CX300 Cycl-Flex |
| Supply Voltage | 240 VAC, 50/60 Hz (B6 suffix) |
| Function | Programmable multi-function timer/counter |
| Timing Modes | On Delay, Off Delay, Interval/One-Shot, Asymmetrical Repeat Cycle, special modes |
| Output | 10 A DPDT instantaneous relay + 1 A solid-state |
| Inhibit Input | 120 VAC / 120 VDC |
| Display | LCD |
| Setting Accuracy (Time) | ±0.1 % or 50 ms (whichever larger), 0–60 °C |
| Repeat Accuracy (Time) | ±0.1 % or 35 ms (whichever larger), 0–60 °C |
| Reset Time | 30 ms after removal of clutch/simulate input |
| Case | Standard 15-terminal CYCL-FLEX plug-in |
| Mounting | Panel mount |
| Certifications | UL, CSA (typical for series) |
| Operating Temperature | 0 °C to 60 °C (typical) |
Application Scenarios & The “Trench” Experience
It’s 02:15 and the packaging line is down because the old timer that controls the glue-apply delay has failed. Every minute costs product and overtime. You need a drop-in CX312B6 that fits the existing CYCL-FLEX socket, accepts the same 240 VAC supply, and can be programmed for the required delay without rewiring.
- Packaging & Converting Machinery – Glue, cut, and eject timing – Programmable on-delay and interval modes handle sequential machine cycles with high repeatability.
- Material Handling / Conveyors – Index and dwell timing – Asymmetrical repeat-cycle mode supports continuous start-stop sequences.
- Process Equipment – Pump, valve, and heater sequencing – Inhibit input allows external interlocks or remote enable/disable.
- Legacy Panel Retrofits – Direct replacement of older Eagle Signal or competitive timers – Same CYCL-FLEX form factor and terminal layout minimize downtime.
Field Case Study
A Midwest converter lost a critical delay timer on a laminating line during a night shift. The original unit was no longer stocked by the OEM. A tested CX312B6 was installed in the existing socket the next morning. After setting the rocker switches for the required time range and mode, the line restarted within two hours. The plant later standardized on CX300-series timers for similar applications to reduce future lead-time risk.
CX312B6
CX312B6
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; every unit is functionally verified.
- Inbound Inspection – OEM part-number and suffix verification, case integrity, terminal condition, and LCD inspection.
- Live Rig Testing – Powered at 240 VAC; timing accuracy, output relay and solid-state operation, inhibit input response, and display function confirmed.
- Electrical Parameter Checks – Supply current, contact resistance, and isolation checks performed.
- Configuration Verification – Rocker-switch settings and available modes exercised against known-good reference.
- Final QC & Packaging – Functional burn-in, documentation of serial/revision, and protective packaging for industrial shipment.
The Veteran’s Tech Trap Guide
⚠️ Suffix matters. The “B6” indicates 240 VAC. Installing a 120 VAC (A6) or 24 VAC (Z6) unit on a 240 V supply will destroy the timer. Always match the voltage suffix to the panel supply.
❗ Rocker switches must be set before installation. Time/count selection, range, and start mode are configured by internal switches. Document the original settings or you will spend extra time troubleshooting after power-up.
⚠️ CYCL-FLEX socket compatibility. The unit is designed for the standard 15-terminal CYCL-FLEX base. Confirm the existing socket is clean and the keying matches before inserting the new timer.
❗ Inhibit input voltage. The inhibit terminals expect 120 VAC or 120 VDC. Applying a different voltage level can damage the input circuit or prevent proper inhibit operation.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the CX312B6 a direct drop-in for older Eagle Signal timers?
A: Yes for panels already using the CYCL-FLEX 15-terminal socket and 240 VAC supply. Programming is done via internal switches rather than external pots or thumbwheels.
Q: Can the timing mode be changed in the field?
A: Yes. Remove the unit from the socket, set the internal rocker switches for the desired mode and range, then reinstall. No external tools beyond a small screwdriver are required.
Q: What is the difference between the instantaneous and solid-state outputs?
A: The 10 A DPDT contact is a mechanical relay suitable for general-purpose loads. The 1 A solid-state output is intended for lower-current or higher-cycle applications where contact wear is a concern.
Q: What warranty is provided?
A: 12 months from ship date on tested new-surplus units.
Q: Why is this sometimes cheaper than list price?
A: Genuine Danaher/Eagle Signal CX300 units move through surplus channels. They remain original hardware; lower pricing reflects inventory dynamics rather than refurbished or non-OEM product.
Q: Does it support both timing and counting?
A: Yes. Internal switches select time or count operation. Count rates and ranges are defined in the series documentation.
Q: Is the unit still supported?
A: The CX300 series is a mature product line. Documentation and repair services remain available through specialty industrial suppliers, but new production may be limited. Keeping a tested spare is the practical approach for critical panels.
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