Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | REM615 (HBMAACADANB1BNN1XD / 1G) |
| Manufacturer | ABB |
| Protection Functions | Thermal Overload, Stall, Unbalance, Ground Fault |
| Communication | IEC 61850 (GOOSE/9-2 LE), Modbus, DNP3 |
| Measurement | Voltage, Current, Power, Energy, RTD Inputs |
| Redundancy | PRP & HSR Support |
| Time Sync | IEEE 1588 v2 Precision Time Protocol |
| Arc Protection | Optional High-Speed Arc Flash Inputs |
| HMI | Editable Single-Line Diagram Display |
| Mounting | Plug-in / Withdrawable Design |
Product Introduction
I’ve commissioned enough ABB REM615 units in cement plants and steel mills to know that the configuration code is where the real story lies. This isn’t just a generic overcurrent relay; it’s a dedicated motor brain that handles the nasty transients during start-up and the slow thermal creep during overload. The HBMAACADANB1BNN1XD and 1G suffixes tell me exactly what I/O and logic options are baked into the silicon, and if you get those wrong, you’re staring at a blank display while the motor burns.The real reason we specify the REM615 is the IEC 61850 backbone. It talks GOOSE to the switchgear and 9-2 LE to the meters without needing extra gateway boxes. I’ve seen these units survive a catastrophic arc flash event inside the MCC bucket because the optional arc protection inputs tripped in under 5ms. Just be warned: the plug-in connectors are precision-machined. If you force them, you’ll bend the backplane pins, and no amount of field bending will fix that.
Quality SOP & Tech Pitfalls
The Lab Report:
We don’t guess on motor protection. Here is the bench protocol for an ABB REM615:
- Config Verification: We read the exact configuration string from the front panel or PCM600. HBMAACADANB1BNN1XD is not the same as 1G.
- Injection Test: Secondary injection of current/voltage to verify thermal curve and overcurrent pickup points.
- GOOSE Stress: Flooding the Ethernet port with GOOSE messages to ensure the CPU doesn’t choke during a grid fault.
- Arc Input Check: Verifying the fiber optic or wire arc inputs trigger the high-speed output.
- ESD & Packing: Anti-static bag, foam, and desiccant. These boards hate humidity and static.
The Engineer’s Warning:
The #1 killer of REM615 units is CT Saturation during Start. If you don’t configure the “Stabilization” or “CT Saturation Block” logic correctly, the relay will see the inrush as a ground fault and trip the motor every time you start it. I’ve seen a plant lose $50k in production because a tech copied settings from a smaller motor without checking the CT ratio. Always verify the CT ratio and saturation blocking logic in PCM600 before closing the breaker. Also, check the plug-in connector pins. If they look dull or scratched, don’t install it.
Installation & Configuration Guide
- Pre-Installation: ⚠️ LOCKOUT/TAGOUT. Verify 0V on control power. PHOTOGRAPH the old relay’s configuration label and wiring. Check the backplane connector for bent pins.
- Removal: Release the plug-in locking screws. Pull straight out. If it sticks, check for a hidden locking tab. Don’t pry.
- Installation: MATCH THE CONFIG CODE. Slide the ABB REM615 straight in. Tighten the locking screws evenly. Loose connection = intermittent ground fault alarms.
- Power-Up & Commissioning: Apply control power. Watch the HMI: “Initializing” → “Running” → “No Alarms”. VERIFY THE CONFIGURATION STRING on the display matches your order. If it doesn’t, stop. Download the correct parameters via PCM600 or the web HMI.
Compatible Replacement Models
| Model | Compatibility Status | Notes |
|---|---|---|
| REM615 HBMAACADANB1BNN1XD | ✅ Drop-in Replacement | Identical hardware/config. Direct swap. |
| REM615 HBMAACADANB1BNN11G | ⚠️ Software Compatible | Same base, verify I/O and logic options. May need parameter reload. |
| REX615 | ❌ Hardware Mod Required | Next-gen replacement. Requires new panel cutout and wiring. |
Frequently Asked Questions
Is HBMAACADANB1BNN1XD the same as 1G?
No. The suffix defines the exact hardware options (RTD inputs, arc protection, I/O count). XD and 1G often differ in optional modules. Check the “Configuration” menu on the front panel or the type label.Can I use this for a synchronous motor?
Technically yes, but the REM615 is optimized for asynchronous motors. For sync motors, you need field failure protection and slip frequency monitoring, which are limited here. Check the manual or upgrade to a REM625.Does it support IEC 61850-9-2 LE?
Yes, but only if the configuration code includes the “Sampled Values” option. Most standard REM615 units don’t have this enabled. Check the suffix or the HMI “Product Info” menu.What if the HMI is blank but LEDs are on?
Corrupted configuration or firmware mismatch. Try a power cycle. If it stays blank, connect via PCM600. If PCM600 can’t connect, the CPU might be bricked. Don’t keep cycling power; you could corrupt the flash.Can I hot-swap this relay?
Yes, the REM615 supports hot-swapping. But ONLY if the motor is stopped and the control circuit is de-energized. Pulling a live relay under load can weld the contacts or fry the output transistors.How do I check the thermal image?
Go to “Measurement” → “Thermal” → “Thermal Image”. It shows the % of thermal capacity used. If it’s stuck at 100% after a cooldown, your RTD input might be open or the thermal model parameters are wrong.Is the web HMI secure?
It has basic password protection, but don’t expose it to the corporate network without a firewall. I’ve seen plants get hit by ransomware through an unsecured relay web interface. Use the dedicated management network.
