Description
Key Technical Parameters
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Series | Mark V (Speedtronic) |
| Full Model | DS3800NMEA1D1G |
| Power Supply | +5V DC @ 5.0A, +15V DC @ 1.2A, -15V DC @ 1.0A |
| Temperature Inputs | 8 thermocouple + 8 RTD = 16 total channels (24-bit ADC, ±0.5°C / ±0.3°C) |
| Relay Outputs | 8 mechanical relays, 5A continuous @ 115VAC/30VDC (surge 10A) with predictive maintenance |
| SS Outputs | 4 solid-state relays, 3A continuous @ 24–48VDC with individual current monitoring |
| Tachometer Inputs | 2 channels (up to 10 kHz) |
| Communication | Mark V proprietary parallel backplane bus |
| Operating Temperature | -40°C to +85°C |
| Vibration Resistance | 5g RMS (MIL-STD-810G) |
| Fault Log | 500 events |
| LED Indicators | Power, Relay Run (8x amber), SS Run (4x green), SS Overcurrent (flashing red), Tach Fail (red x2), RTD Fault (yellow), Relay Degradation (orange), Predictive Model Active (blue), Over-Temp Alarm, Backplane Active, Bus Fault |
Advantages and Distinctive Features
-
Hybrid Output Architecture: Combines 8 mechanical relays (5A) with 4 solid-state outputs (3A) on a single board.
-
Full 16 Temperature Channels (8 T/C + 8 RTD): Comprehensive dual-sensor monitoring.
-
5A Mechanical Relays with Predictive Maintenance: Higher current capacity with real-time contact resistance monitoring.
-
3A Solid-State Outputs with Individual Current Monitoring: Enhanced auxiliary output capability with overcurrent detection.
-
Tachometer Feedback: Dual-channel speed verification for safety-critical applications.
-
Predictive Thermal Modeling: Learns cabinet thermal response during 24-hour initial period.
-
RTD Fault Detection: Open/short/lead-wire degradation monitoring.
-
Extended Environmental Tolerance: -40°C to +85°C with 5g vibration resistance.
-
500-Event Fault Log: Comprehensive diagnostics.
Typical Application Fields
-
Mixed Fan Cabinets: Where both AC/DC exhaust fans and DC auxiliary fans coexist.
-
Safety-Critical Cooling Systems: With redundant temperature sensing and fan failure detection.
-
Offshore Oil & Gas Platforms: Extreme temperature and vibration environments.
-
Nuclear Auxiliary Turbines: High reliability with predictive maintenance.
-
Extreme Desert & Arctic Installations: -40°C to +85°C range.
Comparison with Related Models
| Feature | DS3800NMEA1D1G | DS3800NMEA (Base) | DS3800NHVM1E1D | DS3800NLCA1E1E |
|---|---|---|---|---|
| Relay Outputs | 8 × 5A @ 115VAC/30VDC | 8 × 3A @ 115VAC/30VDC | 8 × 3A @ 125VDC | 8 × 5A @ 115VAC/30VDC |
| SS Outputs | 4 × 3A @ 48VDC | 4 × 2A @ 48VDC | 4 × 4A @ 48VDC | None |
| SS Current Monitoring | Yes | No | Yes | N/A |
| T/C + RTD Inputs | 8 + 8 = 16 | 8 + 0 = 8 | 8 + 8 = 16 | 4 + 8 = 12 |
| Tach Inputs | 2 channels | None | 2 channels | 2 channels |
| Predictive Maintenance | Yes | No | Yes | Yes |
| Predictive Thermal Modeling | Yes | No | Yes | Yes |
| Operating Temp | -40°C to +85°C | 0°C to +60°C | -40°C to +85°C | -40°C to +85°C |
| Fault Log | 500 events | Basic | 500 events | 500 events |
| Cost | Ultra-Premium | Medium | Ultra-Premium+++ | Ultra-Premium |
Selection Recommendations
-
Choose the DS3800NMEA1D1G if:
-
You need 5A relay outputs (AC or DC) for main fans.
-
You need 3A solid-state outputs with current monitoring for auxiliary fans.
-
You require both thermocouple and RTD inputs (16 total channels).
-
You require tachometer feedback for fan speed verification.
-
You want predictive maintenance and predictive thermal modeling.
-
Your installation operates in extreme environments (-40°C to +85°C).
-
-
Choose the DS3800NHVM1E1D if: You need high-voltage DC (125VDC) relay outputs with 4A SS outputs and 16 temperature channels.
-
Choose the DS3800NLCA1E1E if: You need 5A relay outputs with tachometer feedback but without solid-state auxiliary outputs.
Critical Precautions
-
ESD Protection: Always wear a grounded wrist strap.
-
High-Voltage/Current Hazard: Relay outputs switch 115VAC/5A—lethal voltage/current present. Use proper insulation.
-
Relay Inductive Derating: For inductive fan motors, derate from 5A to 3.5A or use RC snubbers.
-
DC Polarity (SS): Solid-state outputs are DC-only and polarity-sensitive.
-
SS Overcurrent: If output exceeds 3.5A, LED flashes red—persistent overcurrent triggers bus fault.
-
RTD Wiring: Use 3-wire Pt100 RTDs—all three wires must be connected.
-
Tachometer Wiring: Use shielded twisted-pair cable.
-
Predictive Model Learning: Requires 24-hour initial learning—do not interrupt power.
-
No Hot-Swap: Always depower the rack before insertion/removal.
-
Slot Assignment: Install in slots 8–10 (auxiliary I/O).
-
CPU Compatibility: Requires Mark V CPU firmware v5.5 or higher for full features.
-
Power Supply: Draws 5.0A on +5V rail—verify sufficient capacity.
IFM IA5130
BRAD HARRISON PA9D01-42
A-B 1492-SPM2B250
Reviews
There are no reviews yet.