Description
Hard-Numbers: Technical Specifications
- Input Voltage Range: 20–30 VDC (charged from the RX3i backplane) .
- Output Voltage Range: 18–30 VDC .
- Maximum Output Power: 45 W .
- Maximum Output Current: 2.25 A .
- Backup Trip Voltage: 19 VDC ±4% (some sources list 16.7 VDC ±4%) .
- Capacitor Pack Life: 5 years (typical service life) .
- Operating Temperature: -25°C to +60°C .
- Dimensions: 114 mm H × 77 mm D × 64 mm W .
- Weight: 1 kg .
- Connection Cable: IC695CBL002 (1 meter / 36 inch dedicated cable) .
- Mounting: Standard EN50022 DIN rail or direct panel mount .
- Clearance Requirement: Minimum 25 mm (1 inch) on all four sides for heat dissipation .
GE IC695ACC400
The Real-World Problem It Solves
A sudden loss of 24VDC control power to the CPE330 CPU wipes its working memory—ladder logic states, recipe parameters, production counters—forcing a complete program reload and system re-initialization that can take hours. This energy pack bridges that gap.
Where you’ll typically find it:
- High-Availability Processes: On compressor stations or pumping systems where losing control state could cause a hazardous restart or equipment damage.
- Data-Critical Batch Operations: In pharmaceutical mixing or chemical reactor control, where the active batch parameters are too complex to re-enter manually.
- Uninterrupted Production Lines: On automotive or packaging lines where production counters and machine sequence data must be preserved across short power glitches.
It’s a maintenance-free alternative to batteries for the CPE330, trading periodic replacement for a predictable 5-year capacitor lifespan.
Hardware Architecture & Under-the-Hood Logic
This is a two-part system: a base that mounts to the DIN rail and a removable “Cap Pack” module (IC695ACC412) containing the capacitor bank and control circuitry. It’s an active, managed power source.
- Power Sourcing & Charging: The module draws charging current from the RX3i backplane’s 24VDC rail via the dedicated IC695CBL002 cable. It continuously charges its internal capacitor bank while system power is present .
- Status Communication: The cable isn’t just for power. It carries bidirectional communication, allowing the CPE330 CPU to monitor the energy pack’s status (charging, ready, fault, low capacitance) and receive firmware updates .
- Failover Switching: The internal circuitry monitors the input voltage. When it detects a drop below the backup trip threshold (~19VDC), it instantly switches the CPU’s memory backup rail to draw from the charged capacitors .
- Controlled Discharge: The capacitor bank is sized to deliver enough energy—typically for just tens of seconds—to power the CPE330 solely for the critical task of writing its volatile RAM contents to internal flash memory before shutting down .
GE IC695ACC400
Field Service Pitfalls: What Rookies Get Wrong
Assuming it Fits Any RX3i CPU
The most expensive mistake is ordering this for a CPE302, CPE305, or CPE310. The ACC402 is hardwired for the CPE330 only. The connector and communication protocol are unique .
- Field Rule: Verify the CPU model on the front label. If it doesn’t say “IC695CPE330,” you need the IC695ACC400, not the ACC402.
Ignoring the 25mm Clearance Rule
Techs cram this module into a tight spot next to the power supply. The plastic housing traps heat, cooking the capacitors and slashing their 5-year lifespan to maybe 2 .
- Quick Fix: Respect the 1-inch clearance on all sides. If space is tight, mount it on a separate DIN rail section away from heat sources like power supplies and CPUs.
Misreading the LED Sequence on First Power-Up
After installing a new Cap Pack module, the STAT LED may flash or remain solid amber for several minutes during the initial charge cycle. Rookies interpret this as a fault and start swapping parts .
- Field Rule: After installation, apply system power and wait. A solid amber STAT LED for 2-5 minutes is a normal “charging” state. Only fault it if the LED remains amber after 10 minutes or flashes a specific error pattern.
Forgetting the 5-Year Replacement Clock
Unlike a battery with a gradual voltage decline, a capacitor pack often works perfectly until it doesn’t. When it fails, the memory retention time drops to zero instantly .
- Field Rule: Log the installation date on the module with a permanent marker. Schedule a proactive replacement of the IC695ACC412 Cap Pack module at the 4-year mark, regardless of LED status.
Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.
