Product Core Brief
- Model: RLC16
- Brand: VIBRO-METER
- Series: VM600 / VM600 Mk2 Machine Monitoring System
- Core Function: 16-channel SPDT relay output card that expands discrete alarm and trip outputs for VM600 MPC4, AMC8, and other monitoring/protection modules.
- Product Type: VM600 Relay Output Module
- Key Specs: 16 SPDT relays | Screw-terminal outputs | NE/NDE jumper-selectable | Hot-swappable | Backplane-driven via VM600 rack
- Condition: New Surplus
Product Introduction
VIBRO-METER RLC16 is a 16-channel relay output card for the VM600 and VM600 Mk2 rack-based machinery monitoring and protection systems. It provides additional discrete relay outputs when the local relays on IOC4T, IOC8T, or other I/O cards are insufficient for plant alarm, trip, interlock, or PLC interface requirements.
The RLC16 is mounted in the rear of the VM600 rack and connects through the backplane. Each of the 16 relays is a single-pole double-throw contact with COM, NO, and NC terminals accessible on screw-terminal blocks. Relays are driven by software-configurable logic from VM600 protection and monitoring cards, and each relay can be jumper-selected for normal-energized or normal-de-energized operation. Typical applications include turbine trip circuits, compressor alarm panels, pump interlocks, DCS/PLC discrete inputs, and auxiliary annunciator systems in power generation, oil & gas, and petrochemical facilities.
Because RLC16 covers multiple part-number variants, the exact revision and relay configuration should be confirmed against the module nameplate and official Vibro-Meter documentation before installation.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | VM600 Relay Output Module |
| Brand | VIBRO-METER |
| System Compatibility | / Mk2 |
| Relay Count | 16 relays |
| Relay Type | SPDT — COM, NO, NC per relay |
| Relay Rating | 250 VAC, 5 AAC typical |
| Configuration | NE / NDE jumper-selectable |
| Connections | Screw-terminal blocks on rear card face |
| Mounting | Rear-mounted in VM600 19″ rack |
| Hot Swap | Supported |
| Condition | New Surplus |
Note: Exact part number, revision, relay ratings, and terminal assignments should be verified from the module nameplate and official Vibro-Meter documentation.
Quality Control Process
Each unit begins with a visual inspection of the front panel, screw terminals, PCB, relay sockets, and backplane contacts for corrosion, burnt traces, loose terminals, or mechanical damage. The RLC16 is then seated into a compatible VM600 rack to verify mechanical fit and backplane engagement.
Power is applied through the rack supply, and relay status indicators are checked for proper initialization. Each relay is exercised to confirm coil operation, contact switching, and correct NE/NDE behavior. Continuity and contact resistance are verified on COM, NO, and NC terminals to ensure reliable switching under load. Where possible, the card is tested with a live VM600 rack to confirm software-driven relay actuation from MPC4 or AMC8 logic. Final packing uses anti-static bags, foam inserts, and sealed cartons to protect the module during shipment.
Replacement Pitfall Guide
❗ Confirm the exact part number and revision. The RLC16 family includes multiple variants such as 200-570-000-014, 200-570-000-111, 200-570-101-015, and others. Relay hardware, terminal layout, or jumper options may differ between revisions.
❗ Verify the driving logic source. RLC16 does not generate alarms by itself—it receives relay drive signals from VM600 MPC4, AMC8, or other monitoring/protection cards through the backplane. Installing it without a compatible driver card or without proper software mapping will result in inactive relays.
❗ Revalidate relay assignments in MPSx software. After replacement, every relay output must be reconfirmed in the configuration software. Incorrect relay mapping can prevent trip signals from reaching the turbine control system, PLC, or annunciator panel.
❗ Check NE/NDE jumper settings. Each relay can be configured as normal-energized or normal-de-energized via on-board jumpers. Installing a replacement card with incorrect jumper settings can cause false trips or fail-safe behavior reversal.
❗ Inspect screw-terminal wiring before energizing. Loose terminals, reversed COM/NO/NC connections, or shared return paths can cause intermittent alarms or unintended equipment trips.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| VIBRO-METER RLC16 | VIBRO-METER RLC16 | Direct | Same model family; verify exact part number and revision. |
| VIBRO-METER RLC16 200-570-000-111 | VIBRO-METER RLC16 200-570-101-015 | Needs Adaptation | Same RLC16 family; confirm revision, relay hardware, and jumper configuration. |
| VIBRO-METER RLC16 | VIBRO-METER IOC4T | Not Compatible | IOC4T is an I/O interface card for MPC4, not a 16-relay expansion card. |
| VIBRO-METER RLC16 | VIBRO-METER IRC4 | Needs Adaptation | IRC4 is a related intelligent relay card; wiring, addressing, and software mapping differ. |
Benchmark notes:
- 16 SPDT relay outputs with COM, NO, and NC terminals on screw-terminal blocks.
- NE/NDE jumper-selectable relay operation for flexible fail-safe design.
- Backplane-driven by VM600 MPC4, AMC8, and other monitoring/protection modules; hot-swappable in VM600 racks.
Always confirm the exact revision, relay jumper settings, and MPSx relay mapping against the original unit before installation.
Do you need the RLC16 relay address mapping guide or the VM600 rear-slot layout for relay cards?
