Key Technical Specifications
- Product Model: VE4036P2
- Manufacturer: Emerson
- Product Type: Serial Interface Card
- Port Configuration: 2x Serial Ports (RS-232/RS-485 selectable)
- Redundancy: Automatic Port Failover
- Baud Rate: Up to 115.2 kbps
- Protocol Support: Modbus RTU, ASCII, DeltaV Serial
- Mounting: DeltaV M-Series Chassis
- Power Draw: ~3.5W from backplane
- Status Indicators: Activity, Fault, Redundancy LEDs
Product Introduction
DeltaV serial networks often fail at the card level, not the cable. The Emerson VE4036P2 sits in the M-Series chassis, bridging legacy serial instruments to the control network with automatic port redundancy. It handles Modbus RTU polling and ASCII device communication without burdening the main controller CPU.This card’s dual-port architecture means if Port A fails, Port B takes over in under 100ms. Field data shows serial cards in high-vibration areas fail 3x faster than I/O cards—having a tested spare prevents weeks of downtime while waiting for OEM repair.
Installation & Configuration Guide
Preparation (10 min)
Back up your DeltaV configuration. Note the current card’s firmware version (check DeltaV Explorer). Verify the new card’s revision matches or is compatible. Power down the M-Series chassis if hot-swap isn’t enabled in your system config.Removal (5–10 min)
Release the card ejector levers. Pull straight out—don’t rock it. Inspect backplane pins for corrosion. (I’ve seen bent pins from forced insertion that caused intermittent comm failures for months.)Installation (10 min)
Align card with guide rails. Push firmly until ejectors click. Tighten captive screws. Reconnect serial cables to the correct port (Port A is typically primary). Verify cable shielding is grounded at the panel end only.Power-On & Test (10 min)
Power up chassis. Check DeltaV Explorer for card recognition. Verify both ports show “Online.” Force a failover test by disconnecting Port A—Port B should take over within 100ms. Check event logs for communication errors.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Quick Check |
|---|---|---|
| Card Not Recognized | Backplane Pin Damage | Inspect pins; reseat card firmly |
| Port A/B Offline | Cable or Termination | Measure continuity; check 120Ω termination |
| Intermittent Comm | Ground Loop | Verify single-point shield ground |
| Redundancy Failover Slow | Firmware Mismatch | Compare FW versions; update if needed |
| Both Ports Fault LED | Internal Failure | Swap to known-good slot; test |
Dimensions, Mounting & Wiring Notes
- Mounting: DeltaV M-Series vertical slot
- Connectors: DB9 male (2x), rear-access
- Termination: Internal 120Ω selectable via jumper
- Clearance: 1 slot width, no adjacent heat sources
- Cable: Shielded twisted pair, max 1200m at 9600 baud
FAQ
Can I mix firmware versions in the same chassis?
No. Mismatched firmware causes redundant port sync failures. Always match the existing card’s revision or update all cards simultaneously during a planned outage.I lost the jumper settings. Where are they?
Check the card’s silkscreen or DeltaV hardware manual. The termination jumper is near the DB9 connectors. Wrong setting = reflection errors at high baud rates.Is this compatible with VE4036P1?
Mechanically yes, electrically no. P2 has improved ESD protection and faster failover. Don’t substitute without verifying DeltaV Explorer support.Do you test the redundancy function?
Yes. Every VE4036P2 gets a forced failover test on our DeltaV M-Series rack. We document switchover time and port recovery. Report included.My serial devices keep dropping. Is it the card?
80% chance it’s cabling or termination. Measure loop resistance and check for ground potential differences. Only suspect the card after verifying field wiring.What’s the lead time if out of stock?
Refurb units ship same-day if in stock. Full repair takes 5-7 business days. We’ll tell you upfront if we can’t meet your timeline.Can I use this for Modbus TCP?
No. This is a serial-only card. For Modbus TCP, you need the VE4037P1 or an Ethernet interface module. Don’t waste time trying to adapt it.
